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Chen JH, Zhang LR, Wang ZY, Liu LJ, Tu LP, Zhang Y, Chen YZ, Han WY. De Novo Synthesis of α-Ketoamides via Pd/TBD Synergistic Catalysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2404266. [PMID: 38986026 DOI: 10.1002/advs.202404266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/17/2024] [Indexed: 07/12/2024]
Abstract
Precisely controlling the product selectivity of a reaction is an important objective in organic synthesis. α-Ketoamides are vital intermediates in chemical transformations and privileged motifs in numerous drugs, natural products, and biologically active molecules. The selective synthesis of α-ketoamides from feedstock chemicals in a safe and operationally simple manner under mild conditions is a long-standing catalysis challenge. Herein, an unprecedented TBD-switched Pd-catalyzed double isocyanide insertion reaction for assembling ketoamides in aqueous DMSO from (hetero)aryl halides and pseudohalides under mild conditions is reported. The effectiveness and utility of this protocol are demonstrated by its diverse substrate scope (93 examples), the ability to late-stage modify pharmaceuticals, scalability to large-scale synthesis, and the synthesis of pharmaceutically active molecules. Mechanistic studies indicate that TBD is a key ligand that modulates the Pd-catalyzed double isocyanide insertion process, thereby selectively providing the desired α-ketoamides in a unique manner. In addition, the imidoylpalladium(II) complex and α-ketoimine amide are successfully isolated and determined by X-ray analysis, confirming that they are probable intermediates in the catalytic pathway.
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Affiliation(s)
- Jia-He Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
| | - Li-Ren Zhang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
| | - Zhang-Yang Wang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
| | - Lu-Jie Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
| | - Li-Ping Tu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
| | - Yun Zhang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
| | - Yong-Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
| | - Wen-Yong Han
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, Green Pharmaceuticals Engineering Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, No. 6 West Xuefu Rd., Zunyi, 563006, China
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2
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Gao YF, Zhang RZ, Xu C, Wang M. Controllable Regioselective [3+2] Cyclizations of N-CF 3 Imidoyl Chlorides and Ph 3PNNC: Divergent Synthesis of N-CF 3 Triazoles. Org Lett 2024; 26:5087-5091. [PMID: 38864522 DOI: 10.1021/acs.orglett.4c01275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Presented herein are two distinct regiodivergent [3+2] cyclization reactions between N-CF3 imidoyl chlorides and N-isocyaniminotriphenylphosphorane (NIITP) that include flexible modulation of the electronic properties of NIITP. The regioselectivity of reactions was different in the absence and presence of the Mo catalyst. The approach provides alternative efficient and scalable routes for N-CF3 triazole synthesis, demonstrating a broad substrate scope, excellent functional group tolerance, and practical advantages.
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Affiliation(s)
- Yan Fang Gao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Ru Zhong Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Cong Xu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
| | - Mang Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China
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3
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Liu Y, Tan Q, Bao L, Nie Y, Zhang L, Hu Z, Xu X. De Novo Synthesis of 2,2'-Bipyridines and Related Bis-azines via Cascade Coupling and Double Pyridannulation of Isocyanides. Org Lett 2024; 26:5043-5048. [PMID: 38842341 DOI: 10.1021/acs.orglett.4c01699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Herein, we present a new and general protocol for the assembly of 2,2'-bipyridyls from nonpyridine substrates without using any metal catalysts or organometallic reagents. The process starts from the coupling of two 1,3-dienyl isocyanides followed by a 6π-electrocyclization/aromatization cascade featuring the simultaneous formation of two pyridine rings in a single operation. Notably, this strategy is also applicable to the construction of nonsymmetrical 2-(2-pyridyl)-quinolines/-quinoxalines. Furthermore, the aggregation-induced emission (AIE) characteristics endow our approach with great potential in biorelevant fields.
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Affiliation(s)
- Yu Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
| | - Qiujian Tan
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
| | - Lan Bao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
| | - Yun Nie
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
| | - Lianshun Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
| | - Zhongyan Hu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
| | - Xianxiu Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, China
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4
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Akbari A, Khosravi H, Bauer F, Rominger F, Breit B, Balalaie S. Metal- and solvent-free domino reaction of 2-isocyanophenol esters to benzoxazines: long-range 1,5-acyl migration on 1,4-diazabutatriene. Chem Commun (Camb) 2024; 60:5451-5454. [PMID: 38689554 DOI: 10.1039/d4cc01214c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The first example of intramolecular nucleophilic addition of 1,4-diazabutatriene to ester is disclosed. This approach provides a facile and versatile synthesis for functionalized 2H-1,4-benzoxazines under metal-, reagent-, and solvent-free conditions. Experimental and computational studies revealed the pivotal role of 1,5-acyl migration as the self-catalytic step in the reaction selectivity.
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Affiliation(s)
- Alireza Akbari
- Peptide Chemistry Research Institute, Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran.
| | - Hormoz Khosravi
- Peptide Chemistry Research Institute, Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran.
| | - Felix Bauer
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, Freiburg im Breisgau 79104, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg D-69120, Germany
| | - Bernhard Breit
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstraße 21, Freiburg im Breisgau 79104, Germany
| | - Saeed Balalaie
- Peptide Chemistry Research Institute, Department of Chemistry, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran, Iran.
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5
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Yan Q, Yuan QJ, Shatskiy A, Alvey GR, Stepanova EV, Liu JQ, Kärkäs MD, Wang XS. General Approach to Amides through Decarboxylative Radical Cross-Coupling of Carboxylic Acids and Isocyanides. Org Lett 2024; 26:3380-3385. [PMID: 38607963 PMCID: PMC11059110 DOI: 10.1021/acs.orglett.4c00872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 03/26/2024] [Accepted: 04/09/2024] [Indexed: 04/14/2024]
Abstract
Herein, we report a silver-catalyzed protocol for decarboxylative cross-coupling between carboxylic acids and isocyanides, leading to linear amide products through a free-radical mechanism. The disclosed approach provides a general entry to a variety of decorated amides, accommodating a diverse array of radical precursors, including aryl, heteroaryl, alkynyl, alkenyl, and alkyl carboxylic acids. Notably, the protocol proved to be efficient for decarboxylative late-stage functionalization of several elaborate pharmaceuticals, demonstrating its potential applications.
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Affiliation(s)
- Qing Yan
- School
of Chemistry and Materials Science, Jiangsu
Key Laboratory of Green Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
| | - Qing-Jia Yuan
- School
of Chemistry and Materials Science, Jiangsu
Key Laboratory of Green Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
| | - Andrey Shatskiy
- Department
of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Gregory R. Alvey
- Department
of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Elena V. Stepanova
- Department
of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
- Research
School of Chemistry & Applied Biomedical Sciences, Tomsk Polytechnic University, Lenin Avenue 30, 634050 Tomsk, Russia
| | - Jian-Quan Liu
- School
of Chemistry and Materials Science, Jiangsu
Key Laboratory of Green Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
| | - Markus D. Kärkäs
- Department
of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Xiang-Shan Wang
- School
of Chemistry and Materials Science, Jiangsu
Key Laboratory of Green Synthesis for Functional Materials, Jiangsu
Normal University, Xuzhou, Jiangsu 221116, China
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6
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Chen TY, Chen J, Ruszczycky MW, Hilovsky D, Hostetler T, Liu X, Zhou J, Chang WC. Variation in biosynthesis and metal-binding properties of isonitrile-containing peptides produced by Mycobacteria versus Streptomyces. ACS Catal 2024; 14:4975-4983. [PMID: 38895101 PMCID: PMC11185824 DOI: 10.1021/acscatal.4c00645] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
A number of bacteria are known to produce isonitrile-containing peptides (INPs) that facilitate metal transport and are important for cell survival; however, considerable structural variation is observed among INPs depending on the producing organism. While non-heme iron 2-oxoglutarate dependent isonitrilases catalyze isonitrile formation, how the natural variation in INP structure is controlled and its implications for INP bioactivity remain open questions. Herein, total chemical synthesis is utilized with X-Ray crystallographic analysis of mycobacterial isonitrilases to provide a structural model of substrate specificity that explains the longer alkyl chains observed in mycobacterial versus Streptomyces INPs. Moreover, proton NMR titration experiments demonstrate that INPs regardless of alkyl chain length are specific for binding copper instead of zinc. These results suggest that isonitrilases may act as gatekeepers in modulating the observed biological distribution of INP structures and this distribution may be primarily related to differing metal transport requirements among the producing strains.
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Affiliation(s)
- Tzu-Yu Chen
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, United States
| | - Jinfeng Chen
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Mark W Ruszczycky
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Dalton Hilovsky
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC 27695, United States
| | - Tyler Hostetler
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, United States
| | - Xiaojing Liu
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC 27695, United States
| | - Jiahai Zhou
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Wei-Chen Chang
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, United States
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7
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Ding S, Pu Y, Lin J, Zhao H, Tang Q, Wang J. Electrophile-Controlled Regiodivergent Palladium-Catalyzed Imidoylative Spirocyclization of Cyclic Alkenes. Org Lett 2024; 26:1908-1913. [PMID: 38407073 DOI: 10.1021/acs.orglett.4c00181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
An intermolecular controllable Pd-catalyzed spirocyclization of isocyano cycloalkenes has been developed, offering efficient and selective approaches toward spirocyclic hydropyrrole scaffolds. 2-Azaspiro-1,7-dienes could be obtained through a "chain-walking" process with aryl/vinyl iodides as electrophiles, while the normal Heck product 2-azaspiro-1,6-dienes were selectively generated when aryl triflates were used as the coupling partner of isocyanides. Mechanistic studies suggested that the counteranion of the Pd(II) intermediate played a crucial role in the regioselectivity control. Dihydropyrrole-fused 5,6,7-membered spirocycles were switchably accessed under mild conditions with wide functional group tolerance.
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Affiliation(s)
- Shumin Ding
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yue Pu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jiao Lin
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Haixia Zhao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Qiang Tang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Jian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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8
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Shan Y, Zhang X, Liu G, Li J, Liu Y, Wang J, Chen D. Cyanation with isocyanides: recent advances and perspectives. Chem Commun (Camb) 2024; 60:1546-1562. [PMID: 38240334 DOI: 10.1039/d3cc05880h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Cyanation has attracted considerable attention in organic synthesis because nitriles are key structural motifs in numerous important dyes, agrochemicals, natural products and drug molecules. As the fourth generation of cyanating reagents, isocyanides occupy a prominent place in the synthesis of nitriles due to their favorable stability, easy operability and high reactivity. In recent years, three types of cyanation with isocyanides have been established: the cleavage of the C-NC bond of tertiary alkyl isocyanides (Type I), the rearrangement of aryl isocyanides with azides (Type II), and the reductive cyanation of ketones with α-acidic isocyanides (Type III). This review focuses on advances in cyanation with isocyanides with an emphasis on reaction scope, limitations and mechanisms, which could reveal their remarkable value and superiority for accessing various nitriles. In addition, the future development prospects of this specific field are also introduced. We believe that this feature article will serve as a comprehensive tool to navigate cyanation with isocyanides across the vast area of synthetic chemistry.
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Affiliation(s)
- Yingying Shan
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Xiuhua Zhang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Gongle Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Jianming Li
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Yongwei Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Jia Wang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Dianpeng Chen
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
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9
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Neo AG, Ramiro JL, García-Valverde M, Díaz J, Marcos CF. Stefano Marcaccini: a pioneer in isocyanide chemistry. Mol Divers 2024; 28:335-418. [PMID: 37043161 PMCID: PMC10876884 DOI: 10.1007/s11030-023-10641-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/20/2023] [Indexed: 04/13/2023]
Abstract
Stefano Marcaccini was one of the pioneers in the use of isocyanide-based multicomponent reactions in organic synthesis. Throughout his career at the University of Florence he explored many different faces of isocyanide chemistry, especially those geared towards the synthesis of biologically relevant heterocycles. His work inspired many researchers who contributed to other important developments in the field of multicomponent reactions and created a school of synthetic chemists that continues today. In this manuscript we intend to review the articles on isocyanide multicomponent reactions published by Dr. Marcaccini and analyse their influence on the following works by other researchers. With this, we hope to highlight the immense contribution of Stefano Marcaccini to the development of isocyanide chemistry and modern organic synthesis as well as the influence of his research on future generations. We believe that this review will not only be a well-deserved tribute to the figure of Stefano Marcaccini, but will also serve as a useful inspiration for chemists working in this field.
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Affiliation(s)
- Ana G Neo
- Laboratory of Bioorganic Chemistry & Membrane Biophysics (L.O.B.O.), Universidad de Extremadura, 10003, Cáceres, Spain
| | - José Luis Ramiro
- Laboratory of Bioorganic Chemistry & Membrane Biophysics (L.O.B.O.), Universidad de Extremadura, 10003, Cáceres, Spain
| | - María García-Valverde
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, 09001, Burgos, Spain
| | - Jesús Díaz
- Laboratory of Bioorganic Chemistry & Membrane Biophysics (L.O.B.O.), Universidad de Extremadura, 10003, Cáceres, Spain
| | - Carlos F Marcos
- Laboratory of Bioorganic Chemistry & Membrane Biophysics (L.O.B.O.), Universidad de Extremadura, 10003, Cáceres, Spain.
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10
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Huang PF, Fu JL, Huang JJ, Xiong BQ, Tang KW, Liu Y. Photoredox radical cyclization reaction of o-vinylaryl isocyanides with acyl chlorides to access 2,4-disubstituted quinolines. Org Biomol Chem 2024; 22:513-520. [PMID: 38131384 DOI: 10.1039/d3ob01915b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
We herein report an efficient photoredox radical cyclization reaction of o-vinylaryl isocyanides with acyl chlorides to access a wide range of 2,4-disubstituted quinolines. Preliminary mechanism experiment results suggested that this reaction was initiated by an acyl radical generated from acyl chlorides through a single-electron-transfer (SET) process. This transformation showed good substrate suitability and functional group compatibility at room temperature.
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Affiliation(s)
- Peng-Fei Huang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Jia-Le Fu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Jia-Jing Huang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
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11
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Divyavani C, Padmaja P, Reddy PN. Isocyanide-based Multicomponent Reactions (IMCRs) in Water or Aqueous Biphasic Systems. Curr Org Synth 2024; 21:140-165. [PMID: 37005400 DOI: 10.2174/1570179420666230330170845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/25/2023] [Accepted: 02/10/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND Isocyanide is an intriguing one-carbon synthon that is frequently employed in a variety of carbon-carbon and carbon-heteroatom bond-forming reactions. Isocyanide-based multicomponent reactions (IMCRs) are effective synthetic tools in organic synthesis for the preparation of complex heterocyclic molecules. The IMCRs in water have become an attractive research direction, enabling simultaneous growth of both IMCRs and green solvents towards ideal organic synthesis. OBJECTIVE The goal of this review is to provide a general overview of IMCRs in water or biphasic aqueous systems for accessing various organic molecules, as well as an examination of their benefits and mechanistic insights. CONCLUSION High atom economies, mild reaction conditions, high yields, and catalyst-free processes are crucial features of these IMCRs in water or biphasic aqueous systems.
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Affiliation(s)
- Chitteti Divyavani
- Department of Chemistry, Sri Padmavathi Women's Degree & PG College, Tirupati, Andhra Pradesh, India
| | - Pannala Padmaja
- Centre for Semio Chemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
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12
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Roose T, McSorley F, Groenhuijzen B, Saya JM, Maes BUW, Orrù RVA, Ruijter E. Dearomative Spirocyclization of Tryptamine-Derived Isocyanides via Iron-Catalyzed Carbene Transfer. J Org Chem 2023; 88:17345-17355. [PMID: 38048350 PMCID: PMC10729054 DOI: 10.1021/acs.joc.3c02160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/06/2023] [Accepted: 11/09/2023] [Indexed: 12/06/2023]
Abstract
Tryptamine-derived isocyanides are valuable building blocks in the construction of spirocyclic indolenines and indolines via dearomatization of the indole moiety. We report the Bu4N[Fe(CO)3NO]-catalyzed carbene transfer of α-diazo esters to 3-(2-isocyanoethyl)indoles, leading to ketenimine intermediates that undergo spontaneous dearomative spirocyclization. The utility of this iron-catalyzed carbene transfer/spirocyclization cascade was demonstrated by its use as a key step in the formal total synthesis of monoterpenoid indole alkaloids (±)-aspidofractinine, (±)-limaspermidine, (±)-aspidospermidine, and (±)-17-demethoxy-N-acetylcylindrocarine.
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Affiliation(s)
- Thomas
R. Roose
- Department
of Chemistry & Pharmaceutical Sciences and Amsterdam Institute
for Molecular & Life Science (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Finn McSorley
- Department
of Chemistry & Pharmaceutical Sciences and Amsterdam Institute
for Molecular & Life Science (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Bryan Groenhuijzen
- Department
of Chemistry & Pharmaceutical Sciences and Amsterdam Institute
for Molecular & Life Science (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Jordy M. Saya
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167 KD Geleen, Netherlands
| | - Bert U. W. Maes
- Organic
Synthesis Division, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.s
| | - Romano V. A. Orrù
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167 KD Geleen, Netherlands
| | - Eelco Ruijter
- Department
of Chemistry & Pharmaceutical Sciences and Amsterdam Institute
for Molecular & Life Science (AIMMS), Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
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13
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Russo C, Donati G, Giustiniano F, Amato J, Marinelli L, Whitby RJ, Giustiniano M. Isocyanides as Catalytic Electron Acceptors in the Visible Light Promoted Oxidative Formation of Benzyl and Acyl Radicals. Chemistry 2023; 29:e202301852. [PMID: 37505481 DOI: 10.1002/chem.202301852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 07/29/2023]
Abstract
The recent disclosure of the ability of aromatic isocyanides to harvest visible light and act as single electron acceptors when reacting with tertiary aromatic amines has triggered a renewed interest in their application to the development of green photoredox catalytic methodologies. Accordingly, the present work explores their ability to promote the generation of both alkyl and acyl radicals starting from radical precursors such as Hantzsch esters, potassium alkyltrifluoroborates, and α-oxoacids. Mechanistic studies involving UV-visible absorption and fluorescence experiments, electrochemical measurements of the ground-state redox potentials along with computational calculations of both the ground- and the excited-state redox potentials of a set of nine different aromatic isocyanides provide key insights to promote a rationale design of a new generation of isocyanide-based organic photoredox catalysts. Importantly, the green potential of the investigated chemistry is demonstrated by a direct and easy access to deuterium labeled compounds.
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Affiliation(s)
- Camilla Russo
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Greta Donati
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Francesco Giustiniano
- School of Chemistry, University of Southampton, University Road, SO171BJ, Southampton, UK
| | - Jussara Amato
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Luciana Marinelli
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Richard John Whitby
- School of Chemistry, University of Southampton, University Road, SO171BJ, Southampton, UK
| | - Mariateresa Giustiniano
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
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14
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Nadal Rodríguez P, Ghashghaei O, Schoepf AM, Benson S, Vendrell M, Lavilla R. Charting the Chemical Reaction Space around a Multicomponent Combination: Controlled Access to a Diverse Set of Biologically Relevant Scaffolds. Angew Chem Int Ed Engl 2023; 62:e202303889. [PMID: 37191208 PMCID: PMC10952796 DOI: 10.1002/anie.202303889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/04/2023] [Accepted: 05/15/2023] [Indexed: 05/17/2023]
Abstract
Charting the chemical reaction space around the combination of carbonyls, amines, and isocyanoacetates allows the description of new multicomponent processes leading to a variety of unsaturated imidazolone scaffolds. The resulting compounds display the chromophore of the green fluorescent protein and the core of the natural product coelenterazine. Despite the competitive nature of the pathways involved, general protocols provide selective access to the desired chemotypes. Moreover, we describe unprecedented reactivity at the C-2 position of the imidazolone core to directly afford C, S, and N-derivatives featuring natural products (e.g. leucettamines), potent kinase inhibitors, and fluorescent probes with suitable optical and biological profiles.
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Affiliation(s)
- Pau Nadal Rodríguez
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
| | - Ouldouz Ghashghaei
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
| | - Anna M. Schoepf
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
| | - Sam Benson
- Centre for Inflammation ResearchThe University of EdinburghEdinburghUK
| | - Marc Vendrell
- Centre for Inflammation ResearchThe University of EdinburghEdinburghUK
| | - Rodolfo Lavilla
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
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15
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Nadal Rodríguez P, Ghashghaei O, Schoepf AM, Benson S, Vendrell M, Lavilla R. Charting the Chemical Reaction Space around a Multicomponent Combination: Controlled Access to a Diverse Set of Biologically Relevant Scaffolds. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 135:e202303889. [PMID: 38516006 PMCID: PMC10952208 DOI: 10.1002/ange.202303889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Indexed: 03/23/2024]
Abstract
Charting the chemical reaction space around the combination of carbonyls, amines, and isocyanoacetates allows the description of new multicomponent processes leading to a variety of unsaturated imidazolone scaffolds. The resulting compounds display the chromophore of the green fluorescent protein and the core of the natural product coelenterazine. Despite the competitive nature of the pathways involved, general protocols provide selective access to the desired chemotypes. Moreover, we describe unprecedented reactivity at the C-2 position of the imidazolone core to directly afford C, S, and N-derivatives featuring natural products (e.g. leucettamines), potent kinase inhibitors, and fluorescent probes with suitable optical and biological profiles.
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Affiliation(s)
- Pau Nadal Rodríguez
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
| | - Ouldouz Ghashghaei
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
| | - Anna M. Schoepf
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
| | - Sam Benson
- Centre for Inflammation ResearchThe University of EdinburghEdinburghUK
| | - Marc Vendrell
- Centre for Inflammation ResearchThe University of EdinburghEdinburghUK
| | - Rodolfo Lavilla
- Department of Medicinal ChemistryFaculty of Pharmacy and Food SciencesUniversity of Barcelona and Institute of Biomedicine UB (IBUB)Av. De Joan XXIII, 27–3108028BarcelonaSpain
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16
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Zhong CR, Zhang YH, Yao G, Zhu HL, Hu YD, Zeng ZG, Liao CZ, He HT, Luo YT, Xiong J. Synthesis of Imidazo[1,2- a]pyridine-Fused 1,3-Benzodiazepine Derivatives with Anticancer Activity via a One-Pot Cascade GBB-3CR/Pd(II)-Catalyzed Azide-Isocyanide Coupling/Cyclization Process. J Org Chem 2023; 88:13125-13134. [PMID: 37616489 DOI: 10.1021/acs.joc.3c01341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
A new one-pot synthesis of imidazo[1,2-a]pyridine-fused 1,3-benzodiazepine derivatives via a sequential GBB-3CR/Pd(II)-catalyzed azide-isocyanide coupling/cyclization process was developed. The Groebke-Blackburn-Bienaymé three-component reactions (GBB-3CR) of 2-aminopyridine, 2-azidobenzaldehydes, and isocyanides in the presence of a catalytic amount of p-toluenesulfonic acid gave azide intermediates without separation. The reaction was followed by using another molecule of isocyanides to produce imidazo[1,2-a]pyridine-fused 1,3-benzodiazepine derivatives in good yields by the Pd(II)-catalyzed azide-isocyanide coupling/cyclization reaction. The synthetic approach produces novel nitrogen-fused polycyclic heterocycles under mild reaction conditions. The preliminary biological evaluation demonstrated that compound 6a inhibited glioma cells efficiently, suggesting potentially broad applications of the approach for synthesis and medicinal chemistry.
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Affiliation(s)
- Cheng-Ran Zhong
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Yang-Hong Zhang
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Gang Yao
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Hai-Li Zhu
- School of Basic Medical Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Yin-Di Hu
- School of Basic Medical Sciences, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Zhi-Gang Zeng
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Chang-Zhou Liao
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Hui-Ting He
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Ya-Ting Luo
- School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
| | - Jun Xiong
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100 Hubei, P. R. China
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17
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Jat RS, Bhanuchandra M. SOCl 2-Catalyzed Meyer-Schuster Rearrangement of 3°-Propargylic Alcohols: Synthesis of Densely Arene-Substituted Pyrazolines Bearing Quaternary Centers from α,β-Unsaturated Carbonyl Compounds and Arylhydrazines. J Org Chem 2023; 88:13184-13190. [PMID: 37669462 DOI: 10.1021/acs.joc.3c01387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Meyer-Schuster rearrangement of 3°-propargyl alcohol to the corresponding α,β-unsaturated carbonyl compounds under SOCl2 catalysis has been reported. Terminal and internal propargyl alcohols efficiently participated in the reaction. Furthermore, we have demonstrated the synthetic utility of conjugated carbonyl compounds to access densely arene-substituted pyrazolines bearing quaternary centers by reacting with arylhydrazine hydrochloride. Isotopic labeling studies were carried out to gain insights into the reaction mechanism.
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Affiliation(s)
- Ram Singh Jat
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
| | - M Bhanuchandra
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
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18
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Chen D, Li J, Zhang X, Liu G, Wang X, Liu Y, Liu X, Shan Y. Rapid Access to Fused Tetracyclic N-Heterocycles via Amino-to-Alkyl 1,5-Palladium Migration Coupled with Intramolecular C(sp 3)-C(sp 2) Coupling. Org Lett 2023; 25:6272-6277. [PMID: 37607048 DOI: 10.1021/acs.orglett.3c02034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An unprecedented route for the preparation of fused tetracyclic N-heterocycles is presented through the palladium-catalyzed cyclization of isocyanides with alkyne-tethered aryl iodides. In this transformation, a novel amino-to-alkyl 1,5-palladium migration/intramolecular C(sp3)-C(sp2) coupling sequence was observed first. More importantly, isocyanide exhibited three roles, serving simultaneously as a C1 synthon, a C1N1 synthon, and the donor of C(sp3) for C(sp3)-C(sp2) coupling, and the reaction was the sole successful example that achieved C(sp3)-H activation of isocyanide.
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Affiliation(s)
- Dianpeng Chen
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Jianming Li
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xiuhua Zhang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Gongle Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xin Wang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yongwei Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xuan Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yingying Shan
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
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19
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Lin H, Pan Y, Fu J, Yi Y, Tang H, Pan Y, Yu W, Wang X. Palladium-Catalyzed Tandem C(sp 3)-H Insertion Cyclization of 2-(2-Vinylarene)acetonitriles with Isocyanides to Access Naphthalen-2-amines. J Org Chem 2023; 88:12409-12420. [PMID: 37578069 DOI: 10.1021/acs.joc.3c01142] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
A Pd-catalyzed cyclization reaction of 2-(2-vinylarene)acetonitriles and isocyanides has been documented. Various naphthalen-2-amines were obtained in moderate to good yields under mild conditions. The in vitro cytotoxicity of all products was evaluated by MTT assay against seven human cancer cell lines. The results indicated that compounds 3ea, 3ma, and 3ob exhibited effective anticancer activities against the tested cancer cells.
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Affiliation(s)
- Huishu Lin
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, P. R. China
| | - Yongzhou Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, P. R. China
| | - Jinping Fu
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, P. R. China
| | - Yi Yi
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, P. R. China
| | - Haitao Tang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, P. R. China
| | - Yingming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, P. R. China
| | - Wanguo Yu
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, P. R. China
| | - Xu Wang
- Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, P. R. China
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University, Guilin 541004, P. R. China
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20
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Fragkiadakis M, Anastasiou PK, Zingiridis M, Triantafyllou-Rundell ME, Reyes Romero A, Stoumpos CC, Neochoritis CG. Instant Macrocyclizations via Multicomponent Reactions. J Org Chem 2023; 88:12709-12715. [PMID: 37596972 DOI: 10.1021/acs.joc.3c01379] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/21/2023]
Abstract
Macrocycles fascinate chemists due to both their structure and their applications. However, we still lack efficient and sustainable synthetic methods, giving us straightforward access to them. Herein, a rapid macrocyclization utilizing a two-step, one-pot approach based on orthogonal multicomponent reaction (MCR) tactics is introduced. This synthetic protocol, which is based on Ugi and Groebke-Blackburn-Bienaymé reactions with isocyanides tethered to alkyl tosylates, yields medium sized macrocycles that are otherwise difficult to achieve. Single crystal structures reveal conformational reorganization via intramolecular hydrogen bonding, and modeling studies profile the synthesized libraries.
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Affiliation(s)
| | | | - Marios Zingiridis
- Department of Chemistry, University of Crete, Voutes, 70013 Heraklion, Greece
| | | | - Atilio Reyes Romero
- Genetic Intelligence Laboratory, Weill Cornell Medicine-Qatar, Qatar Foundation, Doha, Qatar
- Department of Genetic Medicine, Weill Cornell Medicine, P.O. Box 24144, New York, New York 10065, United States
| | - Constantinos C Stoumpos
- Department of Materials Science & Technology, University of Crete, Voutes, 70013 Heraklion, Greece
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21
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Ogawa A, Yamamoto Y. Multicomponent Reactions between Heteroatom Compounds and Unsaturated Compounds in Radical Reactions. Molecules 2023; 28:6356. [PMID: 37687185 PMCID: PMC10488953 DOI: 10.3390/molecules28176356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/18/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
In this mini-review, we present our concepts for designing multicomponent reactions with reference to a series of sequential radical reactions that we have developed. Radical reactions are well suited for the design of multicomponent reactions due to their high functional group tolerance and low solvent sensitivity. We have focused on the photolysis of interelement compounds with a heteroatom-heteroatom single bond, which readily generates heteroatom-centered radicals, and have studied the photoinduced radical addition of interelement compounds to unsaturated compounds. First, the background of multicomponent radical reactions is described, and basic concepts and methodology for the construction of multicomponent reactions are explained. Next, examples of multicomponent reactions involving two interelement compounds and one unsaturated compound are presented, as well as examples of multicomponent reactions involving one interelement compound and two unsaturated compounds. Furthermore, multicomponent reactions involving intramolecular cyclization processes are described.
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Affiliation(s)
- Akiya Ogawa
- Organization for Research Promotion, Osaka Metropolitan University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Yuki Yamamoto
- Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 4-4-37 Takeda, Kofu 400-8510, Japan;
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22
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Chen D, Li J, Liu G, Zhang X, Wang X, Liu Y, Liu X, Liu X, Li Y, Shan Y. Accessing indole-isoindole derivatives via palladium-catalyzed [3+2] cyclization of isocyanides with alkynyl imines. Chem Commun (Camb) 2023; 59:10540-10543. [PMID: 37566103 DOI: 10.1039/d3cc02654j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
A facile protocol for the preparation of indole-isoindole derivatives was developed and proceeds via a palladium-catalyzed [3+2] cyclization of isocyanides with alkynyl imines. In this transformation, the palladium catalyst has a triple role, serving simultaneously as a π acid, a transition-metal catalyst and a hydride ion donor, thus enabling the dual function of isocyanide both as a C1 synthon for cyanation and a C1N1 synthon for imidoylation. Significantly, the reaction is the sole successful example for accessing indole-isoindole derivatives, and will open up new avenues to assemble unique N-heterocycle frameworks. Furthermore, the synthetic value of this protocol is demonstrated in the late-stage modification of physiologically active molecules and in the construction of aggregation-induced emission compounds.
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Affiliation(s)
- Dianpeng Chen
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Jianming Li
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Gongle Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Xiuhua Zhang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Xin Wang
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Yongwei Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Xuan Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Xinghai Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Yongqin Li
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Yingying Shan
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
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23
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Ji H, Xiong W, Guo S, Wang S, Xing X, Tian T, Zhou X. Isonitrile-Tetrazine Click-and-Release Chemistry for Controlling RNA-Guided Nucleic Acid Cleavage. ACS Chem Biol 2023; 18:1829-1837. [PMID: 37505910 DOI: 10.1021/acschembio.3c00255] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
With the increasing demand for the regulation of CRISPR systems, a considerable number of studies have been conducted to control their excessive activity levels. In this context, we propose a method that involves a bioorthogonal cleavage reaction between isonitrile and tetrazine to modulate the cleavage activity of the CRISPR system. Importantly, isonitrile demonstrates significant potential for modifying sgRNAs, making it a promising candidate for bioorthogonal reactions, a phenomenon that has not been previously reported. Our approach utilizes the 3-isocyanopropyl-carbonate group as a caging group to deactivate the CRISPR systems, while tetrazine acts as an activator to restore their activities. Through the implementation of post-synthetic modifications and click-and-release chemistry, we have successfully achieved the regulation of RNA-guided nucleic acid cleavage, which holds great promise for controlling gene editing in human cells.
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Affiliation(s)
- Huimin Ji
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University, Wuhan 430072, Hubei, China
| | - Wei Xiong
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University, Wuhan 430072, Hubei, China
| | - Shaoyuan Guo
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University, Wuhan 430072, Hubei, China
| | - Shaoru Wang
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University, Wuhan 430072, Hubei, China
| | - Xiwen Xing
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Department of Cell Biology, College of Life Science and Technology, Jinan University, Guangzhou 510632, Guangdong, China
| | - Tian Tian
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University, Wuhan 430072, Hubei, China
| | - Xiang Zhou
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Hubei Province Key Laboratory of Allergy and Immunology, Wuhan University, Wuhan 430072, Hubei, China
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24
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Sztanó G, Dobi Z, Soós T. Strain and Complexity, Passerini and Ugi Reactions of Four-Membered Heterocycles and Further Elaboration of TOSMIC Product. ChemistryOpen 2023; 12:e202200083. [PMID: 37548280 PMCID: PMC10405247 DOI: 10.1002/open.202200083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/21/2023] [Indexed: 08/08/2023] Open
Abstract
Straightforward and general Passerini and Ugi procedures have been developed to incorporate four-membered heterocycles into highly functionalized scaffolds. Additionally, toslymethyl isocyanide (TosMIC)-derived Ugi adducts have been prepared, showcasing the prospect of the multicomponent reaction.
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Affiliation(s)
- Gábor Sztanó
- Institute of Organic ChemistryResearch Centre for Natural SciencesBudapest1519Hungary
- Hevesy György PhD School of ChemistryELTE Eötvös Loránd UniversityBudapest1117Pázmány Péter sétány 1/AHungary
| | - Zoltán Dobi
- Institute of Organic ChemistryResearch Centre for Natural SciencesBudapest1519Hungary
| | - Tibor Soós
- Institute of Organic ChemistryResearch Centre for Natural SciencesBudapest1519Hungary
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25
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Alajarin M, Cutillas-Font G, Lopez-Leonardo C, Orenes RA, Marin-Luna M, Pastor A. Intramolecular Cyclization of Azido-Isocyanides Triggered by the Azide Anion: An Experimental and Computational Study. J Org Chem 2023; 88:8658-8668. [PMID: 37338459 PMCID: PMC10861138 DOI: 10.1021/acs.joc.3c00558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Indexed: 06/21/2023]
Abstract
This work describes the unprecedented intramolecular cyclization occurring in a set of α-azido-ω-isocyanides in the presence of catalytic amounts of sodium azide. These species yield the tricyclic cyanamides [1,2,3]triazolo[1,5-a]quinoxaline-5(4H)-carbonitriles, whereas in the presence of an excess of the same reagent, the azido-isocyanides convert into the respective C-substituted tetrazoles through a [3 + 2] cycloaddition between the cyano group of the intermediate cyanamides and the azide anion. The formation of tricyclic cyanamides has been examined by experimental and computational means. The computational study discloses the intermediacy of a long-lived N-cyanoamide anion, detected by NMR monitoring of the experiments, subsequently converting into the final cyanamide in the rate-determining step. The chemical behavior of these azido-isocyanides endowed with an aryl-triazolyl linker has been compared with that of a structurally identical azido-cyanide isomer, experiencing a conventional intramolecular [3 + 2] cycloaddition between its azido and cyanide functionalities. The synthetic procedures described herein constitute metal-free approaches to novel complex heterocyclic systems, such as [1,2,3]triazolo[1,5-a]quinoxalines and 9H-benzo[f]tetrazolo[1,5-d][1,2,3]triazolo[1,5-a][1,4]diazepines.
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Affiliation(s)
- Mateo Alajarin
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Guillermo Cutillas-Font
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Carmen Lopez-Leonardo
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | | | - Marta Marin-Luna
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Aurelia Pastor
- Departamento
de Química Orgánica, Facultad de Química, Regional
Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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26
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Das B, Dahiya A, Chakraborty N, Patel BK. Synthesis of Chromenopyrroles (Azacoumestans) from Functionalized Enones and Alkyl Isocyanoacetates. Org Lett 2023. [PMID: 37410976 DOI: 10.1021/acs.orglett.3c01655] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
Elegant synthetic strategies for chromenopyrroles (azacoumestans) have been devised via cycloaddition of 2-hydroxychalcone/cyclic enones and alkyl isocyanoacetate, followed by lactonization. Herein, ethyl isocyanoacetate acts as a C-NH-C-C═O synthon contrary to its hitherto applications as a C-NH-C synthon. Subsequently, pentacyclic-fused pyrroles were also constructed from the o-iodo benzoyl chromenopyrroles using the Pd(II) catalyst.
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Affiliation(s)
- Bubul Das
- Department of Chemistry, Indian Institute of Technology Guwahati North Guwahati 781039, India
| | - Anjali Dahiya
- Department of Chemistry, Indian Institute of Technology Guwahati North Guwahati 781039, India
| | - Nikita Chakraborty
- Department of Chemistry, Indian Institute of Technology Guwahati North Guwahati 781039, India
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati North Guwahati 781039, India
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27
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Verdoorn D, Ranjan P, de Reuver T, Janssen E, Vande Velde CML, Saya JM, Maes BUW, Orru RVA. A Cobalt Mediated Nitrene Transfer aza-Wittig Cascade Reaction To Access 1,3,4-Oxadiazole Scaffolds. Org Lett 2023; 25:4005-4009. [PMID: 37224106 PMCID: PMC10262268 DOI: 10.1021/acs.orglett.3c00959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Indexed: 05/26/2023]
Abstract
A cobalt(II) mediated three-component synthesis of 5-substituted-N-sulfonyl-1,3,4-oxadiazol-2(3H)-imines using sulfonyl azides, N-isocyaniminotriphenylphosphorane (NIITP), and carboxylic acids has been developed. This one-pot tandem reaction starts with a nitrene transfer to NIITP, followed by addition of the carboxylic acid to the in situ formed carbodiimide and subsequent intramolecular aza-Wittig reaction. Both the steric constraints of carboxylic acid and the stoichiometry of the employed cobalt salt determine the selectivity toward the two products, i.e. 5-substituted-N-sulfonyl-1,3,4-oxadiazol-2(3H)-imine versus 5-substituted-4-tosyl-2,4-dihydro-3H-1,2,4-triazol-3-one.
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Affiliation(s)
- Daniël
S. Verdoorn
- Division
of Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Prabhat Ranjan
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Tim de Reuver
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Elwin Janssen
- Department
of Chemistry and Pharmaceutical Sciences and Amsterdam Institute for
Molecular and Life Sciences (AIMMS), Vrije
Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Christophe M. L. Vande Velde
- Intelligence
in Processes, Advanced Catalysts and Solvents (iPRACS), Faculty of
Applied Engineering, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Jordy M. Saya
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
| | - Bert U. W. Maes
- Division
of Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Romano V. A. Orru
- Organic
Chemistry, Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167RD Geleen, The
Netherlands
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28
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Zheng J, Yang L, Dai X, Chen L, Tang L, Zhou Y, Li WDZ. Diastereodivergent Synthesis of Pentacyclic Spiroindolines via a Magnesium(II)-Catalyzed Cascade Reaction of N,N'-Cyclic Azomethine Imines with Indolyl-Substituted Isocyanides. Org Lett 2023. [PMID: 37196242 DOI: 10.1021/acs.orglett.3c01085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Magnesium(II)-catalyzed cascade reactions of N,N'-cyclic azomethine imines with indolyl-substituted isocyanides are reported herein. The method exhibited a high functional group tolerance and broad substrate scope. A series of anti-pentacyclic spiroindolines containing N,N'-fused heterocycle skeletons were obtained in up to 82% yield with 8.5:1 dr under mild reaction conditions. Intriguingly, a sequential HOAc-mediated protonation results in a diastereoenriched epimerization, which gives rise to the syn-pentacyclic spiroindolines as the sole isomers.
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Affiliation(s)
- Jianfeng Zheng
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China
| | - Lin Yang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Xin Dai
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Lvli Chen
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China
| | - Luhao Tang
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry &Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Wei-Dong Z Li
- School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China
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29
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Yadav N, Bhatta SR, Moorthy JN. Visible Light-Induced Decomposition of Acyl Peroxides Using Isocyanides: Synthesis of Heteroarenes by Radical Cascade Cyclization. J Org Chem 2023; 88:5431-5439. [PMID: 37093050 DOI: 10.1021/acs.joc.2c03059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Visible light-mediated facile synthesis of heteroarenes, namely, isoquinolines, benzothiazoles, and quinazolines, is demonstrated by employing isocyanides and inexpensive acyl peroxides. It is shown for the first time that singlet-excited isocyanides decompose acyl peroxides into aryl/alkyl radicals. The latter attack isocyanides, yielding imidoyl radicals that subsequently cyclize to afford heteroarene products. The protocol involving radical cascade reactions obviates the requirement of any external photocatalyst, oxidant, additive, and base.
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Affiliation(s)
- Navin Yadav
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Sushil Ranjan Bhatta
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Jarugu Narasimha Moorthy
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
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30
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Graziano G, Stefanachi A, Contino M, Prieto-Díaz R, Ligresti A, Kumar P, Scilimati A, Sotelo E, Leonetti F. Multicomponent Reaction-Assisted Drug Discovery: A Time- and Cost-Effective Green Approach Speeding Up Identification and Optimization of Anticancer Drugs. Int J Mol Sci 2023; 24:ijms24076581. [PMID: 37047554 PMCID: PMC10095429 DOI: 10.3390/ijms24076581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Multicomponent reactions (MCRs) have emerged as a powerful strategy in synthetic organic chemistry due to their widespread applications in drug discovery and development. MCRs are flexible transformations in which three or more substrates react to form structurally complex products with high atomic efficiency. They are being increasingly appreciated as a highly exploratory and evolutionary tool by the medicinal chemistry community, opening the door to more sustainable, cost-effective and rapid synthesis of biologically active molecules. In recent years, MCR-based synthetic strategies have found extensive application in the field of drug discovery, and several anticancer drugs have been synthesized through MCRs. In this review, we present an overview of representative and recent literature examples documenting different approaches and applications of MCRs in the development of new anticancer drugs.
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Affiliation(s)
- Giovanni Graziano
- Department of Pharmacy—Pharmaceutical Sciences, University of Bari “Aldo Moro”, 70125 Bari, Italy
- Center for Research in Biological Chemistry and Molecular Materials (CiQUS), Department of Organic Chemistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Angela Stefanachi
- Department of Pharmacy—Pharmaceutical Sciences, University of Bari “Aldo Moro”, 70125 Bari, Italy
| | - Marialessandra Contino
- Department of Pharmacy—Pharmaceutical Sciences, University of Bari “Aldo Moro”, 70125 Bari, Italy
| | - Rubén Prieto-Díaz
- Center for Research in Biological Chemistry and Molecular Materials (CiQUS), Department of Organic Chemistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Alessia Ligresti
- Institute of Biomolecular Chemistry, National Research Council of Italy, 80078 Pozzuoli, Italy
| | - Poulami Kumar
- Institute of Biomolecular Chemistry, National Research Council of Italy, 80078 Pozzuoli, Italy
| | - Antonio Scilimati
- Department of Pharmacy—Pharmaceutical Sciences, University of Bari “Aldo Moro”, 70125 Bari, Italy
| | - Eddy Sotelo
- Center for Research in Biological Chemistry and Molecular Materials (CiQUS), Department of Organic Chemistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Francesco Leonetti
- Department of Pharmacy—Pharmaceutical Sciences, University of Bari “Aldo Moro”, 70125 Bari, Italy
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31
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Luo J, Ma H, Wu K, Ao Y, Zhou W, Cai Q. An Alkyne-Isocyanide Cycloaddition/Boulton-Katritzky Rearrangement/Ring Expansion Reaction: Access to 9-Deazaguanines. Org Lett 2023; 25:2123-2128. [PMID: 36943758 DOI: 10.1021/acs.orglett.3c00575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
An alkyne-isocyanide [3 + 2] cycloaddition followed by a Boulton-Katritzky rearrangement and a ring expansion is demonstrated. Different from the typical Boulton-Katritzky rearrangement, which forms five-membered ring products, the rearrangement-ring expansion method provides a mild, efficient, and atom-economical access to fused 9-deazaguanine structures in high yields.
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Affiliation(s)
- Jianghao Luo
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Haowen Ma
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Kaifu Wu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Yunlin Ao
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Wei Zhou
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Qian Cai
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, No. 601 Huangpu Avenue West, Guangzhou 510632, China
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32
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Russo C, Brunelli F, Cesare Tron G, Giustiniano M. Isocyanide-Based Multicomponent Reactions Promoted by Visible Light Photoredox Catalysis. Chemistry 2023; 29:e202203150. [PMID: 36458647 DOI: 10.1002/chem.202203150] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 12/03/2022]
Abstract
Isocyanide-based multicomponent reactions claim a one century-old history of flourishing developments. On the other hand, the enormous impact of recent progresses in visible light photocatalysis has boosted the identification of new straightforward and green approaches to both new and known chemical entities. In this context, the application of visible light photocatalytic conditions to multicomponent processes has been promoting key stimulating advancements. Spanning from radical-polar crossover pathways, to photoinduced and self-catalyzed transformations, to reactions involving the generation of imidoyl radical species, the present literature analysis would provide a general and critical overview about the potentialities and challenges of exploiting isocyanides in visible light photocatalytic multicomponent reactions.
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Affiliation(s)
- Camilla Russo
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
| | - Francesca Brunelli
- Department of Drug Science, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Gian Cesare Tron
- Department of Drug Science, University of Piemonte Orientale, Largo Donegani 2, 28100, Novara, Italy
| | - Mariateresa Giustiniano
- Department of Pharmacy, University of Naples Federico II, via D. Montesano 49, 80131, Napoli, Italy
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33
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Boron Lewis Acid Catalysis Enables the Direct Cyanation of Benzyl Alcohols by Means of Isonitrile as Cyanide Source. Molecules 2023; 28:molecules28052174. [PMID: 36903420 PMCID: PMC10004367 DOI: 10.3390/molecules28052174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/18/2023] [Accepted: 02/23/2023] [Indexed: 03/03/2023] Open
Abstract
The development of an efficient and straightforward method for cyanation of alcohols is of great value. However, the cyanation of alcohols always requires toxic cyanide sources. Herein, an unprecedented synthetic application of an isonitrile as a safer cyanide source in B(C6F5)3-catalyzed direct cyanation of alcohols is reported. With this approach, a wide range of valuable α-aryl nitriles was synthesized in good to excellent yields (up to 98%). The reaction can be scaled up and the practicability of this approach is further manifested in the synthesis of an anti-inflammatory drug, naproxen. Moreover, experimental studies were performed to illustrate the reaction mechanism.
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34
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Xie C, Wu S, Zhang R. Stereo- and Regiospecific S N2' Reaction of MBH Adducts with Isocyanoacetates: en Route to Transition-Metal-Free α-Allylation of Isocyanoacetates. ACS OMEGA 2023; 8:6854-6859. [PMID: 36844594 PMCID: PMC9948183 DOI: 10.1021/acsomega.2c07581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Herein, we report that under mild and transition-metal-free conditions an unprecedented and practical SN2' reaction of Morita-Baylis-Hillman adducts with isocyanoacetates takes place in a stereo- and regiospecific manner. This reaction which tolerates a wide variety of functionalities delivers transformable α-allylated isocyanoacetates in high efficiencies. Preliminary studies on the asymmetric version of this reaction indicate that ZnEt2/chiral amino alcohol combinations are an asymmetric catalytic system for this transformation, giving an enantioenriched α-allylated isocyanoacetate with a chiral quaternary carbon in a high yield.
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Affiliation(s)
- Chunsong Xie
- College
of New Materials and Engineering, Key Laboratory for Preparation and
Application of Energy Saving and Emission Reduction New Materials
of Jiaxing City, Jiaxing Nanhu University, Jiaxing 314001, P. R. China
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Song Wu
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Runmei Zhang
- College
of Material, Chemistry and Chemical Engineering, Key Laboratory of
Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
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35
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Roose TR, Preschel HD, Mayo Tejedor H, Roozee JC, Hamlin TA, Maes BUW, Ruijter E, Orru RVA. Iron-Catalysed Carbene Transfer to Isocyanides as a Platform for Heterocycle Synthesis. Chemistry 2023; 29:e202203074. [PMID: 36305372 PMCID: PMC10108253 DOI: 10.1002/chem.202203074] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/07/2022]
Abstract
An iron-catalysed carbene transfer reaction of diazo compounds to isocyanides has been developed. The resulting ketenimines are trapped in situ with various bisnucleophiles to access a range of densely functionalized heterocycles (pyrimidinones, dihydropyrazolones, 1H-tetrazoles) in a one-pot process. The electron-rich Hieber anion ([Fe(CO)3 NO]- ) facilitates efficient catalytic carbene transfer from acceptor-type α-diazo carbonyl compounds to isocyanides, providing a cost-efficient and benign alternative to similar noble metal-catalysed processes. Based on DFT calculations a plausible reaction mechanism for activation of the α-diazo carbonyl carbene precursor and ketenimine formation is provided.
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Affiliation(s)
- Thomas R Roose
- Department of Chemistry & Pharmaceutical Sciences Amsterdam Institute for Molecular & Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - H Daniel Preschel
- Department of Chemistry & Pharmaceutical Sciences Amsterdam Institute for Molecular & Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Helena Mayo Tejedor
- Department of Chemistry & Pharmaceutical Sciences Amsterdam Institute for Molecular & Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Jasper C Roozee
- Department of Chemistry & Pharmaceutical Sciences Amsterdam Institute for Molecular & Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Trevor A Hamlin
- Department of Chemistry & Pharmaceutical Sciences Amsterdam Institute for Molecular & Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Bert U W Maes
- Organic Synthesis Division Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, B-2020, Antwerp, Belgium
| | - Eelco Ruijter
- Department of Chemistry & Pharmaceutical Sciences Amsterdam Institute for Molecular & Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands
| | - Romano V A Orru
- Department of Chemistry & Pharmaceutical Sciences Amsterdam Institute for Molecular & Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands.,Department of Organic Chemistry Aachen-Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Urmonderbaan 22, 6167 KD, Geleen, The Netherlands
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36
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Zhao H, Ding S, Li D, Chai M, Dai L, Li J, Jiang Y, Weng T, Wang J. Stereoselective Construction of Unsymmetrically Linked Heterocycles via Palladium-Catalyzed Alkyne Insertion/Cycloimidoylation Cascade. J Org Chem 2023; 88:1613-1624. [PMID: 36642919 DOI: 10.1021/acs.joc.2c02660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A novel strategy to access unsymmetrically linked heterocycles via palladium-catalyzed acylcycloimidoylation of alkyne-tethered carbamoyl chlorides with isocyanides has been developed. Functionalized isocyanides were successfully applied as imine-containing heterocycle precursors to capture the vinyl-PdII intermediate, which was generated from a syn-carbopalladation of alkyne, followed by subsequent intramolecular C-H bond activation/imidoylative Heck reactions. Methylene oxindoles within Z-tetrasubstituted olefins were obtained in high yields with excellent stereoselectivities. Broad functional groups were well tolerated under mild reaction conditions.
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Affiliation(s)
- Haixia Zhao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Shumin Ding
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Dan Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Minxue Chai
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Lixiong Dai
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
| | - Jing Li
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, People's Republic of China
| | - Yuchen Jiang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Tongqing Weng
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Jian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
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37
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Domino synthesis of 5-aminoimidazoles from Strecker multicomponent adducts via ytterbium-promoted isocyanide insertion/5-exo-dig cyclization. Mol Divers 2023; 27:511-515. [PMID: 35416620 DOI: 10.1007/s11030-022-10418-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 03/08/2022] [Indexed: 02/08/2023]
Abstract
A new Lewis acid promoted domino isocyanide insertion/5-exo-dig cyclization of readily available Strecker 3-component adducts to 4-substituted 5-aminoimidazole derivatives is herein reported. Despite their potential as relevant heterocyclic scaffolds in medicinal chemistry programs, this class of compounds is still underrepresented, with current synthetic strategies poorly efficient in terms of timing and yields. To this end, we show how the exploitation of unconventional reactivities of isocyanides, promoted by ytterbium-triflate, could represent a key resource to enable a fast and easy access to such an unexplored area of the chemical space.
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38
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Huang F, Tao LF, Liu J, Qian L, Liao JY. Diastereo- and enantioselective synthesis of biaryl aldehydes bearing both axial and central chirality. Chem Commun (Camb) 2023; 59:4487-4490. [PMID: 36971075 DOI: 10.1039/d3cc00708a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
An unprecedented method for the synthesis of biaryl aldehydes bearing both axial and central chirality is presented.
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Affiliation(s)
- Fen Huang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China.
| | - Ling-Fei Tao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China.
| | - Jiyong Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Linghui Qian
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China.
| | - Jia-Yu Liao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou 310058, China.
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou 310018, China
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39
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Gu Q, Cheng Z, Qiu X, Zeng X. Recent Advances in the Electrochemical Functionalization of Isocyanides. CHEM REC 2023; 23:e202200177. [PMID: 36126178 DOI: 10.1002/tcr.202200177] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/30/2022] [Indexed: 01/21/2023]
Abstract
Isocyanides are well-known as efficient CO surrogates and C1 synthons in modern organic synthesis. Although tremendous efforts have been devoted to fully exploiting the reactivity of isocyanides, these transformations are primarily limited by their utilization of stoichiometric toxic chemical oxidants. With the recent resurgence of organic electrochemistry, which has considerably laid dormant over the past several decades, electrolysis has been identified as a green and powerful tool to enrich structural diversity by solely utilizing electric current as clean and inherently safe redox equivalents of stoichiometric chemical oxidants. In this regard, the unique reactivity of isocyanides has been studied in numerous electrochemical transformations. This review comprehensively highlights the most relevant progress in electrochemical strategies towards the functionalization of isocyanides up until June of 2022, with a focus on reaction outcomes and mechanisms.
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Affiliation(s)
- Qingyun Gu
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Zhenfeng Cheng
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Xiaodong Qiu
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
| | - Xiaobao Zeng
- School of Pharmacy, Nantong University, Nantong, 226001, PR China
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40
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Urea Synthesis from Isocyanides and O-Benzoyl Hydroxylamines Catalyzed by a Copper Salt. Molecules 2022; 27:molecules27238219. [PMID: 36500315 PMCID: PMC9740992 DOI: 10.3390/molecules27238219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/19/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
In the presence of CuOAc, a series of unsymmetric ureas can be generated in moderate to good yields under mild reaction conditions (10 mol% of CuOAc, 2 equiv t-BuONa or PhONa, 30 °C), using aryl isocyanides and O-benzoyl hydroxylamines as the readily accessible starting materials. The reactions might undergo a cascade process involving isocyanide insertion into the N-O bond and Mumm-type rearrangement. This work represents a rare example of isocyanide insertion into N-O bonds, which would extend isocyanide insertion chemistry.
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41
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Coupling of Thiazole-2-Amines with Isocyanide Ligands in bis-(Isocyanide) Platinum Complex: A New Type of Reactivity. INORGANICS 2022. [DOI: 10.3390/inorganics10120221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The treatment of cis-[PtCl2(XylNC)2] with thiazol-2-amines in a 2:1 ratio leads to a regioisomeric mixture of two binuclear complexes. These regioisomers are products of kinetic and thermodynamic control capable of regioisomerization. When the same reaction is carried out with a 5-fold excess of thiazol-2-amine, the nucleophile is able to react with the in situ-formed binuclear platinum(II) complexes, yielding a new type of bis-carbene platinum species. All new isolated compounds were characterized by 1H, 13C{1H}, and 195Pt{1H} NMR spectroscopy, high-resolution ESI-MS, and single-crystal X-ray diffraction.
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42
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Lei J, Yang D, Xu J, Li J, Zhang G, Xiong X, Zhou C, Xu Z, Chen Z. Ugi Cascade Sequence for the Construction of 3‐Pyrrolin‐2‐one Scaffolds: Anti‐proliferation in Prostate Cancer Cells. Chem Asian J 2022; 17:e202200977. [DOI: 10.1002/asia.202200977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/30/2022] [Indexed: 11/23/2022]
Affiliation(s)
- Jie Lei
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University 2 Tiansheng Ave., Beibei 400715 Chongqing P. R. China
| | - Dong‐Lin Yang
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
| | - Jia Xu
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
| | - Jie Li
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
| | - Geng‐Yuan Zhang
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
| | - Xu Xiong
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
| | - Chen‐He Zhou
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University 2 Tiansheng Ave., Beibei 400715 Chongqing P. R. China
| | - Zhi‐Gang Xu
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
| | - Zhong‐Zhu Chen
- College of Pharmacy National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics IATTI Chongqing University of Arts and Sciences 319 Honghe Ave., Yongchuan 402160 Chongqing P. R. China
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43
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Sun BB, Liu K, Gao Q, Fang W, Lu S, Wang CR, Yao CZ, Cao HQ, Yu J. Enantioselective Ugi and Ugi-azide reactions catalyzed by anionic stereogenic-at-cobalt(III) complexes. Nat Commun 2022; 13:7065. [PMID: 36400776 PMCID: PMC9674650 DOI: 10.1038/s41467-022-34887-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 11/10/2022] [Indexed: 11/19/2022] Open
Abstract
Ugi reactions and related variations are proven to be atom and step-economic strategies for construction of highly valuable peptide-like skeletons and nitrogenous heterocycles. The development of structurally diverse range of novel catalytic systems and the discovery of new approaches to accommodate a broader scope of terminating reagents for asymmetric Ugi four-component reaction is still in high demand. Here, we report a strategy that enables enantioselective Ugi four-component and Ugi-azide reactions employing anionic stereogenic-at-cobalt(III) complexes as catalysts. The key nitrilium intermediates, generated through the nucleophilic addition of isocyanides to the chiral ion-pair which consists of stereogenic-at-cobalt(III) complexes counteranion and a protonated iminium, are trapped by either carboxylic acids or in situ-generated hydrazoic acid, delivering α-acylamino amides and α-aminotetrazoles in good to excellent enantioselectivities (up to 99:1 e.r.).
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Affiliation(s)
- Bing-Bing Sun
- grid.411389.60000 0004 1760 4804Department of Applied Chemistry, Anhui Agricultural University, Hefei, 230036 China
| | - Kun Liu
- grid.411389.60000 0004 1760 4804Department of Applied Chemistry, Anhui Agricultural University, Hefei, 230036 China
| | - Quan Gao
- grid.411389.60000 0004 1760 4804School of Plant Protection, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, Hefei, 230036 China
| | - Wei Fang
- grid.411389.60000 0004 1760 4804Department of Applied Chemistry, Anhui Agricultural University, Hefei, 230036 China
| | - Shuang Lu
- grid.411389.60000 0004 1760 4804Department of Applied Chemistry, Anhui Agricultural University, Hefei, 230036 China
| | - Chun-Ru Wang
- grid.411389.60000 0004 1760 4804Department of Applied Chemistry, Anhui Agricultural University, Hefei, 230036 China
| | - Chuan-Zhi Yao
- grid.411389.60000 0004 1760 4804Department of Applied Chemistry, Anhui Agricultural University, Hefei, 230036 China
| | - Hai-Qun Cao
- grid.411389.60000 0004 1760 4804School of Plant Protection, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, Hefei, 230036 China
| | - Jie Yu
- grid.411389.60000 0004 1760 4804Department of Applied Chemistry, Anhui Agricultural University, Hefei, 230036 China ,grid.411389.60000 0004 1760 4804School of Plant Protection, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, Hefei, 230036 China
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Brunelli F, Ceresa C, Fracchia L, Tron GC, Aprile S. Expanding the Chemical Space of Drug-like Passerini Compounds: Can α-Acyloxy Carboxamides Be Considered Hard Drugs? ACS Med Chem Lett 2022; 13:1898-1904. [DOI: 10.1021/acsmedchemlett.2c00420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Francesca Brunelli
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Chiara Ceresa
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Letizia Fracchia
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Gian Cesare Tron
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Silvio Aprile
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
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45
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Altundas B, Alwedi E, Song Z, Gogoi AR, Dykstra R, Gutierrez O, Fleming FF. Dearomatization of aromatic asmic isocyanides to complex cyclohexadienes. Nat Commun 2022; 13:6444. [PMID: 36307409 PMCID: PMC9616822 DOI: 10.1038/s41467-022-33807-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 09/30/2022] [Indexed: 12/25/2022] Open
Abstract
A dearomatization-dislocation-coupling cascade rapidly transforms aromatic isocyanides into highly functionalized cyclohexadienes. The facile cascade installs an exceptional degree of molecular complexity: three carbon-carbon bonds, two quaternary stereocenters, and three orthogonal functionalities, a cyclohexadiene, a nitrile, and an isocyanide. The tolerance of arylisocyanides makes the method among the mildest dearomatizations ever reported, typically occurring within minutes at -78 °C. Experimental and computational analyses implicate an electron transfer-initiated mechanism involving an unprecedented isocyanide rearrangement followed by radical-radical anion coupling. The dearomatization is fast, proceeds via a complex cascade mechanism supported by experimental and computational insight, and provides complex, synthetically valuable cyclohexadienes.
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Affiliation(s)
- Bilal Altundas
- grid.166341.70000 0001 2181 3113Department of Chemistry, Drexel University, 3401 Chestnut St., Philadelphia, PA 19104 USA
| | - Embarek Alwedi
- grid.417993.10000 0001 2260 0793Merck Inc., 90 E. Scott Ave, Rahway, NJ 07065 USA
| | - Zhihui Song
- grid.164295.d0000 0001 0941 7177Department of Chemistry and Biochemistry, University of Maryland, 8051 Reagents Drive, College Park, MD 20742 USA
| | - Achyut Ranjan Gogoi
- grid.264756.40000 0004 4687 2082Department of Chemistry, Texas A&M University, Ross @ Spence St, College Station, TX 77843 USA
| | - Ryan Dykstra
- grid.164295.d0000 0001 0941 7177Department of Chemistry and Biochemistry, University of Maryland, 8051 Reagents Drive, College Park, MD 20742 USA
| | - Osvaldo Gutierrez
- grid.264756.40000 0004 4687 2082Department of Chemistry, Texas A&M University, Ross @ Spence St, College Station, TX 77843 USA
| | - Fraser F. Fleming
- grid.166341.70000 0001 2181 3113Department of Chemistry, Drexel University, 3401 Chestnut St., Philadelphia, PA 19104 USA
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46
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A More Sustainable Isocyanide Synthesis from N-Substituted Formamides Using Phosphorus Oxychloride in the Presence of Triethylamine as Solvent. Molecules 2022; 27:molecules27206850. [PMID: 36296444 PMCID: PMC9608669 DOI: 10.3390/molecules27206850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/05/2022] [Accepted: 10/10/2022] [Indexed: 11/24/2022] Open
Abstract
A simple, green, and highly efficient protocol for the synthesis of isocyanides is described. The reaction involves dehydration of formamides with phosphorus oxychloride in the presence of triethylamine as solvent at 0 °C. The product isocyanides were obtained in high to excellent yields in less than 5 min. The method offers several advantages including increased synthesis speed, relatively mild conditions, and rapid access to large numbers of functionalized isocyanides, excellent purity, increased safety, and minimal reaction waste. The new approach of synthesising dehydrative isocyanides from formamides is significantly more environmentally-friendly than prior methods.
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47
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Luo Z, Wang W, Tang T, Zhang S, Huang F, Hu D, Tao L, Qian L, Liao J. Torsional Strain‐Independent Catalytic Enantioselective Synthesis of Biaryl Atropisomers. Angew Chem Int Ed Engl 2022; 61:e202211303. [DOI: 10.1002/anie.202211303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Zhang‐Hong Luo
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Wen‐Tao Wang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Tian‐Yi Tang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Sen Zhang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Fen Huang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Dan Hu
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Ling‐Fei Tao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Linghui Qian
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Jia‐Yu Liao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University Hangzhou 310018 China
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48
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Matheau-Raven D, Dixon DJ. A One-Pot Synthesis-Functionalization Strategy for Streamlined Access to 2,5-Disubstituted 1,3,4-Oxadiazoles from Carboxylic Acids. J Org Chem 2022; 87:12498-12505. [PMID: 36054913 PMCID: PMC9486941 DOI: 10.1021/acs.joc.2c01669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
A one-pot 1,3,4-oxadiazole synthesis-arylation strategy
for accessing
2,5-disubstituted 1,3,4-oxadiazoles, from carboxylic acids, N-isocyaniminotriphenylphosphorane (NIITP), and aryl iodides,
is reported. The reaction sequence, featuring a second stage copper-catalyzed
1,3,4-oxadiazole arylation, was found to tolerate (hetero)aryl, alkyl,
and alkenyl carboxylic acids, and (hetero)aryl iodide coupling partners.
The effectiveness of the two-stage strategy was exemplified by the
late-stage functionalization of five carboxylic acid-containing APIs,
and an extension to the synthesis of aminated 1,3,4-oxadiazoles using N-benzoyloxy amine coupling partners was also demonstrated.
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Affiliation(s)
- Daniel Matheau-Raven
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Darren J Dixon
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
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49
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Wang Z, Zhang Y, Wu Z, Zhao Y. DTBP
‐promoted Passerini‐type reaction of isocyanides with aldehydes: Synthesis of α‐acyloxycarboxamides. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zhuo Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
| | - Yan Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
| | - Zi‐Han Wu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
| | - Yu‐Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry Northeast Normal University Changchun China
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50
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Wang C, Yu B, Li W, Zou W, Cong H, Shen Y. Effective strategy for polymer synthesis: multicomponent reactions and click polymerization. MATERIALS TODAY CHEMISTRY 2022; 25:100948. [DOI: 10.1016/j.mtchem.2022.100948] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
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