1
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Li M, Chen Y, Tang H, Cheng W, Liao B, Wang Q, Yi W. One-pot formal [3 + 2] annulation of 2-pyridinyl-substituted p-quinone methides and arynes for the synthesis of 3-aryl pyrido[1,2- a]indoles. Org Biomol Chem 2024; 22:5618-5628. [PMID: 38910460 DOI: 10.1039/d4ob00684d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
An efficient and metal-free method for the synthesis of 3-aryl pyrido[1,2-a]indoles from aryne intermediates and 2-pyridinyl-substituted p-QMs was successfully developed under ambient conditions. The reaction offered a novel and practical protocol to access some diverse functional molecules in good to excellent yields. The proposed mechanism indicated that the reaction proceeded via a formal [3 + 2] cycloaddition step.
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Affiliation(s)
- Mengfan Li
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China.
| | - Yan Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China.
| | - Hao Tang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China.
| | - Wen Cheng
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China.
| | - Benren Liao
- Shanghai No.4 Reagent Chemical Co., Ltd, Shanghai 201512, P. R. China.
| | - Qingwei Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, P. R. China.
| | - Weiyin Yi
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China.
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2
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Rai S, Patil BE, Kumari P, Mainkar PS, Prasanthkumar S, Adepu R, Chandrasekhar S. Practical Access to Fused Carbazoles via Oxidative Benzannulation and their Photophysical Properties. J Org Chem 2024; 89:9586-9596. [PMID: 38899857 DOI: 10.1021/acs.joc.4c01093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
An aryne annulation strategy for the synthesis of fused carbazoles is developed using indolyl β-ketonitrile in a cascade manner. The reaction sequence involves aryne-mediated [2 + 2] cycloaddition cleavage and intramolecular Michael addition, followed by oxidation under transition-metal-free reaction conditions. Subsequently, conversion of benzo[b]carbazole-6-carbonitrile to carbazole quinone is observed upon prolongation of the reaction time. Furthermore, these materials exhibit high quantum efficiency, which promotes the light-emitting diode applications.
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Affiliation(s)
- Shweta Rai
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Basavarajagouda E Patil
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Priti Kumari
- Department of Polymers and Functional Materials, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Prathama S Mainkar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Seelam Prasanthkumar
- Department of Polymers and Functional Materials, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Raju Adepu
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Gong S, Xie X, Sun H, Liu Y, Li J, Zhang Z. Recent Progress on Multi-Component Reactions Involving Nucleophile, Arynes and CO 2. Molecules 2024; 29:3152. [PMID: 38999103 PMCID: PMC11243390 DOI: 10.3390/molecules29133152] [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: 06/08/2024] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 07/14/2024] Open
Abstract
Carbon dioxide (CO2) is a non-toxic, abundant and recoverable source of carbon monoxide. Despite its thermodynamically stable and kinetically inert nature, research on CO2 utilisation is ongoing. CO2-based aryne reactions, crucial for synthesising ortho-substituted benzoic acids and their cyclisation products, have garnered significant attention, and multi-component reactions (MCRs) involving CO2, aryne and nucleophilic reagents have been extensively studied. This review highlights recent advancements in CO2 capture reactions utilising phenylalkyne reactive intermediates. Mechanistic insights into these reactions are provided together with prospects for further development in this field.
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Affiliation(s)
- Shaoxuan Gong
- Engineering Research Center of Sichuan-Tibet Traditional Medicinal Plant & School of Pharmacy, Chengdu University, Chengdu 610106, China; (S.G.); (X.X.); (H.S.); (Y.L.); (J.L.)
| | - Xiumei Xie
- Engineering Research Center of Sichuan-Tibet Traditional Medicinal Plant & School of Pharmacy, Chengdu University, Chengdu 610106, China; (S.G.); (X.X.); (H.S.); (Y.L.); (J.L.)
| | - Hongxia Sun
- Engineering Research Center of Sichuan-Tibet Traditional Medicinal Plant & School of Pharmacy, Chengdu University, Chengdu 610106, China; (S.G.); (X.X.); (H.S.); (Y.L.); (J.L.)
| | - Yuting Liu
- Engineering Research Center of Sichuan-Tibet Traditional Medicinal Plant & School of Pharmacy, Chengdu University, Chengdu 610106, China; (S.G.); (X.X.); (H.S.); (Y.L.); (J.L.)
| | - Junjie Li
- Engineering Research Center of Sichuan-Tibet Traditional Medicinal Plant & School of Pharmacy, Chengdu University, Chengdu 610106, China; (S.G.); (X.X.); (H.S.); (Y.L.); (J.L.)
| | - Zhen Zhang
- Engineering Research Center of Sichuan-Tibet Traditional Medicinal Plant & School of Pharmacy, Chengdu University, Chengdu 610106, China; (S.G.); (X.X.); (H.S.); (Y.L.); (J.L.)
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
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4
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Kumar R, Dohi T, Zhdankin VV. Organohypervalent heterocycles. Chem Soc Rev 2024; 53:4786-4827. [PMID: 38545658 DOI: 10.1039/d2cs01055k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
This review summarizes the structural and synthetic aspects of heterocyclic molecules incorporating an atom of a hypervalent main-group element. The term "hypervalent" has been suggested for derivatives of main-group elements with more than eight valence electrons, and the concept of hypervalency is commonly used despite some criticism from theoretical chemists. The significantly higher thermal stability of hypervalent heterocycles compared to their acyclic analogs adds special features to their chemistry, particularly for bromine and iodine. Heterocyclic compounds of elements with double bonds are not categorized as hypervalent molecules owing to the zwitterionic nature of these bonds, resulting in the conventional 8-electron species. This review is focused on hypervalent heterocyclic derivatives of nonmetal main-group elements, such as boron, silicon, nitrogen, carbon, phosphorus, sulfur, selenium, bromine, chlorine, iodine(III) and iodine(V).
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, J C Bose University of Science and Technology, YMCA, NH-2, Sector-6, Mathura Road, Faridabad, 121006, Haryana, India.
| | - Toshifumi Dohi
- Graduate School of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, 1038 University Drive, 126 HCAMS University of Minnesota Duluth, Duluth, Minnesota 55812, USA.
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5
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Khan H, Barman D, Sen S. Light-Induced Generation and Cycloaddition Reactions of Benzyne: Synthesis of Naphthoxindoles E and Annulated Indolizines. J Org Chem 2024; 89:6257-6262. [PMID: 38608223 DOI: 10.1021/acs.joc.4c00257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
By virtue of their high electrophilic nature, benzynes serve as reactive dienophiles in numerous cycloaddition reactions. However, in situ generation of benzyne involves either base-mediated thermal reactions, low-temperature conditions, or metal-catalyzed reactions of substituted arenes. This limits the applicability of benzynes as suitable dipolarophiles in cycloaddition reactions. Herein, we have reported a UVA (365 nM)-induced in situ generation of benzynes (from triazenyl benzoic acid) and subsequently their [4 + 2] Diels-Alder and [3 + 2] cycloaddition reactions with appropriate reaction partners such as N-protected alkylidene oxindole carboxylates and pyridinium ylides to afford naphthoxindoles E and pyrido[2,1-a]isoindole, respectively, in moderate to excellent yield. The reactions occurred at room temperature and under reagent-free reaction conditions. Each of these building blocks is pharmaceutically relevant; hence, this highlights an interesting strategy to access these classes of compounds.
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Affiliation(s)
- Haya Khan
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Dadri, Chithera, GB Nagar, Uttar Pradesh 201314, India
| | - Dhiraj Barman
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Dadri, Chithera, GB Nagar, Uttar Pradesh 201314, India
| | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, Dadri, Chithera, GB Nagar, Uttar Pradesh 201314, India
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6
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Zhang Y, Yang Z, Yang H, Li X, Yang L. Generation of sulfones utilizing β-sulfinyl esters as masked aryl sulfinates under redox-neutral conditions. Org Biomol Chem 2024; 22:3381-3385. [PMID: 38606462 DOI: 10.1039/d4ob00238e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
A method for generation of SVI sulfones from β-sulfinyl esters (SIV) under transition-metal-free non-oxidative mild conditions is presented. Various sulfones have been achieved with moderate to excellent yields. The advantage of using β-sulfinyl esters as masked aryl sulfinates has also been exemplified using brominated substrates. Oxygen isotope-labeling experiments indicated that the oxygen atoms incorporated into the sulfone product come from the sulfoxide of the β-sulfinyl ester. Successive β-elimination/O-addition/sulfinate esterification/β-elimination processes are proposed for the mechanism of generating SVI from SIV.
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Affiliation(s)
- Yixin Zhang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, People's Republic of China.
| | - Zhu Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, People's Republic of China.
| | - Hongjun Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, People's Republic of China.
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, People's Republic of China.
| | - Lu Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, People's Republic of China.
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7
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Mindner J, Rombach S, Werz DB. Copper-Assisted (Pseudo-)Halochalcogenation of Arynes. Org Lett 2024; 26:2124-2128. [PMID: 38427809 DOI: 10.1021/acs.orglett.4c00498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
In this report, we describe the multicomponent coupling reaction between arynes, (pseudo)halides, and an electrophilic chalcogen species. Addition of a copper salt enabled smooth conversion by suppressing side reactions. A variety of different aryne precursors as well as seleno- and thiosulfonates were employed, yielding a broad spectrum of ortho-(pseudo)halogenated chalcogenides. This motif was subjected to different cross-coupling approaches, demonstrating the applicability of these compounds as building blocks for more complex structures.
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Affiliation(s)
- Jasper Mindner
- Institute of Organic Chemistry, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
| | - Sina Rombach
- Institute of Organic Chemistry, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
| | - Daniel B Werz
- Institute of Organic Chemistry, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
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8
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Chawla R, Singh AK, Dutta PK. Arylazo sulfones: multifaceted photochemical reagents and beyond. Org Biomol Chem 2024; 22:869-893. [PMID: 38196324 DOI: 10.1039/d3ob01599h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
The photochemical action of arylazo sulfones under visible light irradiation has recently gained considerable attention for the construction of carbon-carbon and carbon-heteroatom bonds in organic synthesis. The inherent dyedauxiliary group (-N2SO2R) embedded in the reagent is responsible for the absorption of visible light even in the absence of a photocatalyst, additive or oxidant, leading to the generation of three different radicals, viz. aryl (carbon-centred), sulfonyl (sulphur-centred) and diazenyl (nitrogen-centred) radicals, under different reaction conditions. Encountering a reagent with such a versatile behaviour is quite rare, which makes arylazo sulfones a highly interesting class of compounds. The mild reaction conditions under which these reagents can operate are an added advantage. Recently, they are also being used as non-ionic photoacid generators (PAGs), electron acceptors, and hydrogen atom transfer (HAT) and imination reagents in a number of synthetic transformations. They have displayed substantial damaging effect on the structure of DNA in the presence of light which can lead to their use as phototoxic pharmaceuticals for cancer treatment. Moreover, their photochemistry is also being exploited in polymerization reactions (as photoinitiators) and in materials chemistry (surface modification).
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Affiliation(s)
- Ruchi Chawla
- Polymer Research Laboratory, Department of Chemistry, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211004, India.
| | - Atul K Singh
- Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Pradip K Dutta
- Polymer Research Laboratory, Department of Chemistry, Motilal Nehru National Institute of Technology Allahabad, Prayagraj 211004, India.
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9
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Sarkar S, Singh P, Edin S, Wendt OF, Almqvist F. Synthesis of Three-Dimensional Ring Fused Heterocycles by a Selective [4 + 2] Cycloaddition Between Bicyclic Thiazolo 2-Pyridones and Arynes. J Org Chem 2024; 89:731-739. [PMID: 38093677 PMCID: PMC10777404 DOI: 10.1021/acs.joc.3c01957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/15/2023] [Accepted: 11/24/2023] [Indexed: 01/06/2024]
Abstract
A selective [4 + 2] cycloaddition reaction of thiazolo-2-pyridones with arynes has been demonstrated. The developed protocol allows rapid access to highly functionalized, structurally complex thiazolo-fused bridged isoquinolones in high yields, which are susceptible to further late-stage functionalization.
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Affiliation(s)
- Souvik Sarkar
- Department
of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Pardeep Singh
- Department
of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Simon Edin
- Centre
for Analysis and Synthesis, Lund University, SE-221 00 Lund, Sweden
| | - Ola F. Wendt
- Centre
for Analysis and Synthesis, Lund University, SE-221 00 Lund, Sweden
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10
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Pan G, Pu M, Wang H, Ying M, Li Y, Dong S, Feng X, Liu X. Catalytic Enantioselective Nucleophilic Addition to Arynes by a New Quaternary Guanidinium Salt-Based Phase-Transfer Catalyst. J Am Chem Soc 2023; 145:26318-26327. [PMID: 37962558 DOI: 10.1021/jacs.3c09594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Owing to the mild generation methods, arynes have been widely used in synthetic chemistry. However, achieving asymmetric organocatalytic reactions with arynes remains a formidable and infrequent challenge, primarily because these neutral and transient species tend to spontaneously quench. To address this issue, a solid-liquid phase-transfer strategy is devised in which the generation speed of arynes could be controlled by the in situ generated fluoride-based chiral phase-transfer catalyst. In this study, we present a catalytic enantioselective nucleophilic addition reaction involving arynes, utilizing an amino amide-based guanidinium salt QG•X. Furthermore, we demonstrate the broad compatibility of this reaction with various arynes and cyclic/acyclic β-keto amides, leading to the creation of diverse α-aryl quaternary stereocenters with good stereoselectivity. Mechanistic investigations have uncovered the potential involvement of a chiral intramolecular cationic-anionic pair and HF during the ion exchange between QG•X and CsF for nucleophile activation and aryne generation. Additionally, DFT calculations suggested that the observed high levels of enantioselectivity can be attributed to steric repulsion and the cumulative noncovalent interactions between the catalysts and substrates.
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Affiliation(s)
- Guihua Pan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Maoping Pu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hongyu Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Meijia Ying
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yi Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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11
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Preeti, Kallurkar KV, Mainkar PS, Adepu R, Chandrasekhar S. Easy Access to Phenanthridinones via Metal-Free Cascade Benzannulation and C-N Bond Formation. Org Lett 2023; 25:8408-8412. [PMID: 37971420 DOI: 10.1021/acs.orglett.3c03040] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
A concise route for the synthesis of dihydrobenzo[j]phenanthridinones has been disclosed through an aryne annulation strategy under metal-free reaction conditions. The reaction involves multiple C-C and C-N bond cleavages/formations via Diels-Alder reaction, aromatization-driven C-N bond cleavage, and amide formation.
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Affiliation(s)
- Preeti
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kailas V Kallurkar
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Prathama S Mainkar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Raju Adepu
- Department of Natural Products and Medicinal Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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12
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Wang K, Zhou W, Jia J, Ye J, Yuan M, Yang J, Qi Y, Chen R. Substrate-Controlled Diversity-Oriented Synthesis of Novel Polycyclic Frameworks via [4 + 2] and [3 + 2] Annulations of Ninhydrin-Derived MBH Adducts with 3,4-Dihydroisoquinolines. Molecules 2023; 28:6761. [PMID: 37836604 PMCID: PMC10574269 DOI: 10.3390/molecules28196761] [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: 08/21/2023] [Revised: 09/19/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
Substrate-controlled diversity-oriented synthesis of polycyclic frameworks via [4 + 2] and [3 + 2] annulations between ninhydrin-derived Morita-Baylis-Hillman (MBH) adducts and 3,4-dihydroisoquinolines under similar reaction conditions have been developed. The reaction provides diversity-oriented synthesis of a series of novel and structurally complex spiro multi heterocyclic skeletons in good yields (up to 87% and 90%, respectively) with excellent diastereoselectivities (up to >25:1 dr). In particular, the switchable [4 + 2] and [3 + 2] annulation reactions are controlled by tuning the hydroxyl protecting group on the ninhydrin-derived MBH adduct to deliver structural diverse spiro[indene-2,2'-[1,3]oxazino[2,3-a]isoquinoline] and spiro[indene-2,1'-pyrrolo[2,1-a]isoquinoline], respectively. Furthermore, the relative configuration and chemical structure of two kinds of cycloadducts were confirmed through X-ray diffraction analysis.
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Affiliation(s)
- Kaikai Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453000, China; (K.W.); (W.Z.); (J.Y.); (M.Y.); (Y.Q.)
| | - Wenwen Zhou
- School of Pharmacy, Xinxiang University, Xinxiang 453000, China; (K.W.); (W.Z.); (J.Y.); (M.Y.); (Y.Q.)
| | - Jun Jia
- Jilin Province Product Quality Supervision and Inspection Institute, Changchun 130012, China;
| | - Junwei Ye
- School of Pharmacy, Xinxiang University, Xinxiang 453000, China; (K.W.); (W.Z.); (J.Y.); (M.Y.); (Y.Q.)
| | - Mengxin Yuan
- School of Pharmacy, Xinxiang University, Xinxiang 453000, China; (K.W.); (W.Z.); (J.Y.); (M.Y.); (Y.Q.)
| | - Jie Yang
- School of Chemistry & Materials Engineering, Xinxiang University, Xinxiang 453000, China
| | - Yonghua Qi
- School of Pharmacy, Xinxiang University, Xinxiang 453000, China; (K.W.); (W.Z.); (J.Y.); (M.Y.); (Y.Q.)
| | - Rongxiang Chen
- School of Pharmacy, Xinxiang University, Xinxiang 453000, China; (K.W.); (W.Z.); (J.Y.); (M.Y.); (Y.Q.)
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13
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Das A, Debnath S, Hota P, Das T, Maiti DK. K 2CO 3-Catalyzed Dual C-C-Coupled Cyclization to 3-Amino-4-benzoylbiphenyls and In Situ I 2-Catalyzed C-N Bond Forming Annulation: A Metal-Free Synthesis of Arylacridones. J Org Chem 2023; 88:12986-12996. [PMID: 37659070 DOI: 10.1021/acs.joc.3c01010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Unprecedented metal-free cyclization catalysis reactions are developed in a highly regioselective fashion to synthesize 3-amino-4-benzoyl biphenyls and arylacridones with high atom economy. Catalytic K2CO3 is utilized as the only reagent for the unusual rapid dual C-C-coupled cyclization between β-keto enamines and cinnamaldehydes to furnish the functionalized biphenyls. Its C(sp2)-H functionalized C-N bond-forming cyclization was performed in situ using molecular I2 as a catalyst to furnish valuable arylacridones. Plausible mechanisms for the new cyclization reactions are predicted by conducting various control experiments and ESI-MS analyses.
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Affiliation(s)
- Aranya Das
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Sudipto Debnath
- Central Ayurveda Research Institute, CCRAS, Ministry of Ayush, Govt. of India, 4-CN Block, Bidhannagar, Sector-V, Kolkata 700091, India
| | - Poulami Hota
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Tuluma Das
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Dilip K Maiti
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
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14
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Guo Y, Su J, Xu J, Song Q. Synthesis of Phosphachromones by Cyclized Coupling of Ethyl Hydrogen (Phenylethynyl)phosphonate with Arynes. Org Lett 2023; 25:6459-6463. [PMID: 37624072 DOI: 10.1021/acs.orglett.3c01938] [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 straightforward and efficient strategy for the synthesis of phosphachromones has been reported via the insertion of arynes into P-O bonds. This operationally simple reaction is compatible with different functional groups, affording various phosphachromones by the simultaneous formation of C-P and C-O bonds in one step with moderate to good yields, and the Fries rearrangement involving phosphorus atoms is a key step in the reaction.
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Affiliation(s)
- Yu Guo
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Jianke Su
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Jian Xu
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Chemical Engineering and College of Material Sciences Engineering, Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, China
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian 350108, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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15
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Xie P, Zheng Y, Luo Y, Luo J, Wu L, Cai Z, He L. Synthesis of Sulfilimines via Multicomponent Reaction of Arynes, Sulfamides, and Thiosulfonates. Org Lett 2023; 25:6133-6138. [PMID: 37579216 DOI: 10.1021/acs.orglett.3c02217] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
In this work, a facile and efficient method for the synthesis of sulfilimines through multicomponent reaction of arynes, sulfamides, and thiosulfonates was developed. A variety of structurally diverse substrates and functional groups were very compatible in the reaction, giving the corresponding sulfilimines in good to high yields. This protocol could be conducted on a gram scale, and the product was easily converted to sulfide and sulfoximine. Mechanism studies revealed that sulfenamide generated in situ is the key intermediate for the reaction.
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Affiliation(s)
- Pei Xie
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Yating Zheng
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Yuping Luo
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Jinyun Luo
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Leifang Wu
- Analysis and Testing Center of Shihezi University, Shihezi University, Shihezi 832000, P. R. China
| | - Zhihua Cai
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Lin He
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
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16
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Abstract
An efficient and metal-free approach for the synthesis of sulfilimines from sulfenamides with aryne and cyclohexyne precursors has been developed. The reaction proceeds through unusual S-C bond formation, which offers a novel and practical entry to access a wide range of sulfilimines in moderate to good yields with excellent chemoselectivity. Moreover, this protocol is amenable to gram-scale synthesis and is applicable to the transformation of the products into useful sulfoximines.
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Affiliation(s)
- Xianda Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Jiaojiang 318000, Zhejiang, China
| | - Minghong Chen
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Jiaojiang 318000, Zhejiang, China
| | - Fu-Sheng He
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Jiaojiang 318000, Zhejiang, China
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering & Institute for Advanced Studies, Taizhou University, Jiaojiang 318000, Zhejiang, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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17
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Fan R, Liu S, Yan Q, Wei Y, Wang J, Lan Y, Tan J. Empowering boronic acids as hydroxyl synthons for aryne induced three-component coupling reactions. Chem Sci 2023; 14:4278-4287. [PMID: 37123174 PMCID: PMC10132127 DOI: 10.1039/d3sc00072a] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/13/2023] [Indexed: 03/16/2023] Open
Abstract
Boronic acids have become one of the most prevalent classes of reagents in modern organic synthesis, displaying various reactivity profiles via C-B bond cleavage. Herein, we describe the utilization of a readily available boronic acid as an efficient surrogate of hydroxide upon activation via fluoride complexation. The hitherto unknown aryne induced ring-opening reaction of cyclic sulfides and three-component coupling of fluoro-azaarenes are developed to exemplify the application value. Different from metal hydroxides or water, this novel hydroxy source displays mild activation conditions, great functionality tolerance and structural tunability, which shall engender a new synthetic paradigm and in a broad context offer new blueprints for organoboron chemistry. Detailed computational studies also recognize the fluoride activation mode, provide in-depth insights into the unprecedented mechanistic pathway and elucidate the reactivity difference of ArB(OH) x F y complexes, which fully support the experimental data.
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Affiliation(s)
- Rong Fan
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Shihan Liu
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University Chongqing 400030 China
| | - Qiang Yan
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Yun Wei
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Jingwen Wang
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
| | - Yu Lan
- Chongqing Key Laboratory of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Chongqing University Chongqing 400030 China
- ZhengZhou JiShu Institute of AI Science Zhengzhou 450000 China
| | - Jiajing Tan
- Department of Organic Chemistry, Beijing University of Chemical Technology Beijing 100029 China
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18
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Yuan H, Yin W, Hu J, Li Y. 3-sulfonyloxyaryl(mesityl)iodonium triflates as 1,2-benzdiyne precursors with activation via ortho-deprotonative elimination strategy. Nat Commun 2023; 14:1841. [PMID: 37012251 PMCID: PMC10070408 DOI: 10.1038/s41467-023-37196-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 03/03/2023] [Indexed: 04/05/2023] Open
Abstract
Benzyne has long captivated the attention of chemists and has gained numerous synthetic achievements. Among typical benzyne generation methods, removal of two vicinal substituents from 1,2-difunctionalized benzenes, i.e., Kobayashi's protocol, are prevailing, while ortho-deprotonative elimination from mono-substituted benzene lags far behind. Despite the advantages of atom economy and ready achievability of precursors, a bottle neck for ortho-deprotonative elimination strategy resides in the weak acidity of the ortho-hydrogen, which normally demands strong bases as the activating reagents. Here, an efficient aryne generation protocol is developed, where ortho-deprotonative elimination on 3-sulfonyloxyaryl(mesityl)iodonium triflates occurs under mild conditions and the generated 3-sulfonyloxyarynes can serve as efficient 1,2-benzdiyne synthons. This array of 1,2-benzdiyne precursors can be conveniently prepared with high functional group tolerance, and densely substituted scaffolds can be accessed as well. Carbonate and fluoride salts are found to serve as efficient activating reagents, which are the weakest bases used in ortho-deprotonative elimination strategies. Particularly, this scaffold has predictable chemoselective generation of the designated aryne intermediates. The success of this ortho-deprotonative elimination protocol sets up a unique platform with a broad spectrum of synthetic applications.
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Affiliation(s)
- Haoyin Yuan
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400030, China
| | - Wenhao Yin
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400030, China
| | - Jili Hu
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400030, China
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400030, China.
- College of Chemistry, Jilin University, Changchun, 130012, China.
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19
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Kamikawa K. Asymmetric reactions involving aryne intermediates. Nat Rev Chem 2023:10.1038/s41570-023-00485-y. [PMID: 37117814 DOI: 10.1038/s41570-023-00485-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2023] [Indexed: 04/03/2023]
Abstract
Although arynes are usually considered fleeting intermediates, they are highly valuable synthons because they enable the introduction of aromatic rings and the simultaneous formation of new bonds at two sites. Although catalytic reactions using transition metals are excellent method for constructing complex polycyclic aromatic molecules in a single step, the use of asymmetric catalysis for the capture of arynes remains a crucial goal for the progress of aryne chemistry. Catalytic asymmetric reactions of arenes are challenging, requiring sufficient interactions between the neutral and highly reactive short-lived aryne intermediates in a stereo-controlled fashion. In addition, spontaneous decomposition, as well as side reactions, has hindered their development and, until recently, highly enantioselective reactions using arynes had remained elusive. This Review highlights asymmetric reactions using arynes, featuring diastereoselective, enantioselective and catalytic enantioselective reactions.
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20
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Liu FC, Si MJ, Shi XR, Zhuang SY, Cai Q, Liu Y, Wu AX. Base-Controlled Synthesis of Fluorescent Acridone Derivatives via Formal (4 + 2) Cycloaddition. J Org Chem 2023. [PMID: 36780192 DOI: 10.1021/acs.joc.2c02977] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
A transition-metal-free formal (4 + 2) cycloaddition for the direct assembly of acridone derivatives has been developed from simple and easily accessible o-aminobenzamides and 2-(trimethylsilyl)aryl triflates. The base played an important role in the selective controlled synthesis of N-H and N-aryl acridones. A preliminary study on the fluorescence properties of N-aryl acridones demonstrated that they could be used as fluorescent materials with a broad emission range.
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Affiliation(s)
- Fa-Chuang Liu
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Meng-Jie Si
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Xin-Ru Shi
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Shi-Yi Zhuang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Qun Cai
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Yi Liu
- Coal Conversion and New Carbon Materials Key Laboratory of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China.,School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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21
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Morja MI, Chikhalia KH. Palladium(0)-catalyzed aryne annulation: a powerful strategy for the synthesis of thio-bridged compounds. Mol Divers 2023; 27:299-311. [PMID: 35451702 DOI: 10.1007/s11030-022-10424-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 03/23/2022] [Indexed: 02/08/2023]
Abstract
A method for the construction of various thio-bridged compounds is developed using readily available o-(trimethylsilyl)aryl triflates as a source of aryne precursor, catalyzed by simple Pd(dba)2/dppe complex. This operationally simple and modular protocol allows thio-bridged compound via C(sp2)-C(sp2) and C(sp2)-C(sp3) bond formation in promising yields with a broad substrate scope. The key part is in situ generation of an aryne from o-(trimethylsilyl)aryl triflates and their subsequent intermolecular annulation.
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Affiliation(s)
- Mayur I Morja
- Department of Chemistry, Government Science College, Vankal, Surat, Gujarat, 394350, India
| | - Kishor H Chikhalia
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, Gujarat, 395007, India.
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22
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Wei YM, Ma XD, Wang MF, Duan XF. Synergism of Fe/Ti Enabled Regioselective Arene Difunctionalization. J Am Chem Soc 2023; 145:1542-1547. [PMID: 36622693 DOI: 10.1021/jacs.2c13207] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Regioselective difunctionalization of arenes remains a long-standing challenge in organic chemistry. We report a novel and general Fe/Ti synergistic methodology for regioselective synthesis of various polysubstituted arenes through either E/E' or Nu/E ortho difunctionalizations of arenes. Preliminary results showed that an unprecedented 1,2-Fe/Ti heterobimetallic arylene intermediate bearing two distinct C-M bonds is essential to the regioselective difunctionalization.
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Affiliation(s)
- Yi-Ming Wei
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xiao-Di Ma
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Meng-Fei Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xin-Fang Duan
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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23
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Krishna RB, Moncy SH, Mohan C. Arynes as synthetic linchpins towards the construction of diversely functionalized natural product skeletons. Org Biomol Chem 2023; 21:479-488. [PMID: 36514934 DOI: 10.1039/d2ob01975b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Arynes are a privileged class of reactive intermediates in synthetic organic chemistry, and their unusual reactivities have been the subject of engrossing research interest. Recently, there are many reports on novel aryne-based synthetic innovations as a linchpin approach to accomplish the total synthesis of structurally diverse natural products or their derivatives in a racemic and enantiopure fashion. This review provides an overview of the literature on synthetic strategies, employing arynes as crucial intermediates to construct architecturally intriguing bioactive natural products/derivatives in a period of 2019 to 2022. This study highlights the need to investigate the effective synthesis and search for new biological uses of highly functionalized natural product skeletons.
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Affiliation(s)
- R Bharath Krishna
- Institute for Integrated Programmes and Research in Basic Sciences, Mahatma Gandhi University, Kottayam 686560, India
| | - Shirin Hanna Moncy
- Institute for Integrated Programmes and Research in Basic Sciences, Mahatma Gandhi University, Kottayam 686560, India
| | - Chithra Mohan
- School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, India.
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24
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Tathe AG, Saswade SS, Patil NT. Gold-catalyzed multicomponent reactions. Org Chem Front 2023. [DOI: 10.1039/d3qo00272a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Multicomponent reactions (MCRs) have emerged as an important branch in organic synthesis for the creation of complex molecular structures. This review is focused on gold-catalyzed MCRs with a special emphasis on the recent developments.
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25
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Zhang S, Wang X, Han LL, Li J, Liang Z, Wei D, Du D. Atroposelective Synthesis of Triaryl α-Pyranones with 1,2-Diaxes by N-Heterocyclic Carbene Organocatalysis. Angew Chem Int Ed Engl 2022; 61:e202212005. [PMID: 36314469 DOI: 10.1002/anie.202212005] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Indexed: 11/25/2022]
Abstract
Atropisomers bearing multiple stereogenic axes are of increasing importance to the field of material science, pharmaceuticals, and catalysis. However, the atroposelective construction of multi-axis atropisomers remains rare and challenging, due to the intrinsical difficulties in the stereo-control of the multiple stereogenic axes. Herein, we demonstrate a single-step construction of a new class of 1,2-diaxially chiral triaryl α-pyranones by an N-heterocyclic carbene organocatalytic asymmetric [3+3] annulation of well-designed alkynyl acylazolium precursors and enolizable sterically hindered 2-aryl ketones. The protocol features broad substrate scope (>50 examples), excellent stereo-control (most cases >20 : 1 dr, up to 99.5 : 0.5 er), and potentially useful synthetic applications. The success of this reaction relies on the rational design of structurally matched reaction partners and the careful selection of the asymmetric catalytic system. DFT calculations have also been performed to discover and rationalize the origin of the high stereoselectivity of this reaction.
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Affiliation(s)
- Simiao Zhang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P.R. China
| | - Xiaoxue Wang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P.R. China
| | - Li-Li Han
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan Province, 450001, P. R. China
| | - Jibin Li
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P.R. China
| | - Zheng Liang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P.R. China
| | - Donghui Wei
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan Province, 450001, P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P.R. China
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26
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Yaragorla S, Arun D. Arylation and Aryne Insertion into C-Acylimines: A Simple, Flexible, and Divergent Synthesis of C2-Aryl Indoles. J Org Chem 2022; 87:14250-14263. [PMID: 36219251 DOI: 10.1021/acs.joc.2c01753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We reveal a direct strategy for the flexible synthesis of C2-aryl/heteroaryl indoles without transition metal catalysts. The synthesis involves a one-pot, four-component reaction of readily available starting materials to offer diversity around the indole moiety with a broad substrate scope and high yields. The reaction proceeds via the Friedel-Crafts C-arylation of C-acylimine formed in situ, followed by N-arylation with aryne, a formal [3+2] cycloaddition, and a subsequent aromatization cascade.
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Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
| | - Doma Arun
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
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27
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Li Y, Li Y, Fei H, Kong R, Yu Z, He L. Synthesis of 3-(2-oxopropyl)-2-arylisoindolinone derivatives via a three-component reaction of diaryliodonium salts with 2-formylbenzonitriles and phenylacetylenes. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198211063799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A copper-catalyzed multicomponent cascade cyclization using readily available substrates, including 2-formylbenzonitriles, phenylacetylenes, and diaryliodonium salts, is achieved. A broad reaction scope is presented with good functional group compatibility, giving rise to a range of 3-(2-oxopropyl)-2-arylisoindolinones in moderate to good yields.
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Affiliation(s)
- Yang Li
- School of Pharmaceutical Engineering, Jiangsu Food and Pharmaceutical Science College, Huai’an, P.R. China
| | - Yuan Li
- School of Pharmaceutical Engineering, Jiangsu Food and Pharmaceutical Science College, Huai’an, P.R. China
| | - Haiyang Fei
- School of Pharmaceutical Engineering, Jiangsu Food and Pharmaceutical Science College, Huai’an, P.R. China
| | - Ruiping Kong
- School of Pharmaceutical Engineering, Jiangsu Food and Pharmaceutical Science College, Huai’an, P.R. China
| | - Zhenzhong Yu
- School of Pharmaceutical Engineering, Jiangsu Food and Pharmaceutical Science College, Huai’an, P.R. China
| | - Liu He
- School of Pharmaceutical Engineering, Jiangsu Food and Pharmaceutical Science College, Huai’an, P.R. China
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28
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Chen Z, Tan M, Shan C, Yuan X, Chen L, Shi J, Lan Y, Li Y. Aryne 1,4‐Disubstitution and Remote Diastereoselective 1,2,4‐Trisubstitution via a Nucleophilic Annulation‐[5,5]‐Sigmatropic Rearrangement Process. Angew Chem Int Ed Engl 2022; 61:e202212160. [DOI: 10.1002/anie.202212160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Zhonghong Chen
- College of Chemistry Jilin University Changchun 130012 P. R. China
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Min Tan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- College of Chemistry Chongqing Normal University Chongqing 401331 P. R. China
| | - Xiaoling Yuan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Liyuan Chen
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou Henan, 450001 P. R. China
| | - Yang Li
- College of Chemistry Jilin University Changchun 130012 P. R. China
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
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29
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Wan C, Guo Y, Chen X, Gu R, Shi J, Li Y. Benzyne Polyfunctionalization via a Tandem C–C σ-Bond Insertion and Photo-Nazarov Cyclization. Org Lett 2022; 24:7276-7281. [DOI: 10.1021/acs.orglett.2c02652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Caiwen Wan
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Yueyin Guo
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Xiaocui Chen
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Rongrong Gu
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
- College of Chemistry, Jilin University, Changchun 130012, P. R. China
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30
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Guo Y, Bao H, Chen L, Shi J, Li Y. Diverse Synthesis of Triarylselenonium Salts and o-(Alkoxy)aryl Aryl Selanes via Insertion of Benzyne into the Se═O Bond. Org Lett 2022; 24:6999-7003. [PMID: 36125196 DOI: 10.1021/acs.orglett.2c02849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An insertion of benzyne into the Se═O bond has been realized. In this reaction, two types of compounds containing selenium could be synthesized from different substrates. When diaryl selenium oxides were used, triarylselenonium salts were furnished, while o-(alkoxy)phenyl phenyl selanes could be produced from aryl alkyl selenium oxides.
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Affiliation(s)
- Yongjin Guo
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Hongpeng Bao
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Liyuan Chen
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400030, P. R. China.,College of Chemistry, Jilin University, Changchun 130012, P. R. China
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31
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Hashimoto Y, Tantillo DJ. Mechanism and the Origins of Periselectivity in Cycloaddition Reactions of Benzyne with Dienes. J Org Chem 2022; 87:12954-12962. [PMID: 36121919 DOI: 10.1021/acs.joc.2c01509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Density functional theory calculations have been used to explore the reaction mechanism of (4 + 2) and (2 + 2) cycloadditions of benzyne with classical dienes. The results indicate the following: (1) (4 + 2) products arise via concerted pathways, (2) (2 + 2) products arise via stepwise pathways with diradical intermediates, and (3) these diradical intermediates are formed via isomerization of carbene intermediates. The origins of periselectivity in these reactions are analyzed using distortion/interaction analysis for the key steps, and they indicate that the tiny distortion in the very early [4 + 2] transition structure, coupled with an entropic favorability, controls selective (4 + 2) cycloaddition.
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Affiliation(s)
- Yoshimitsu Hashimoto
- Department of Chemistry, University of California-Davis, Davis, California95616, United States
| | - Dean J Tantillo
- Department of Chemistry, University of California-Davis, Davis, California95616, United States
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32
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Wang G, Huang J, Zhang L, Han J, Zhang X, Huang J, Fu Z, Huang W. N-heterocyclic carbene-catalyzed atroposelective synthesis of axially chiral 5-aryl 2-pyrones from enals. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1327-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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33
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Abstract
Strained intermediates such as cyclic alkynes and allenes are most commonly utilized in nucleophilic additions and cycloadditions, but have seen increased use in a third area of reactivity: metal-mediated transformations. The merger of strained intermediates and metal catalysis has enabled rapid access to complex, polycyclic systems. Following a discussion of relevant landmark studies involving metals and strained intermediates, this article highlights recent advances in transition metal-mediated transformations from our laboratory. Specifically, this includes the use of arynes in the synthesis of decorated organometallic complexes, and the utilization of cyclic allenes to access enantioenriched heterocycles. Moreover, the broad applicability of such transformations, and exciting future areas of research are discussed.
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Affiliation(s)
- Katie A. Spence
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- These authors contributed equally: Katie A. Spence and Arismel Tena Meza
| | - Arismel Tena Meza
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- These authors contributed equally: Katie A. Spence and Arismel Tena Meza
| | - Neil K. Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
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34
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Guan W, Lu D, Yang X, Deng W, Xiang J, Kambe N, Qiu R. CF 3SO 2Na-Mediated Five-Component Carbonylation of Triarylboroxines with TMSCF 3 and THF/LiOH/NaI to Give Aroyloxyalkyl Iodides. J Org Chem 2022; 87:9635-9644. [PMID: 35830500 DOI: 10.1021/acs.joc.2c00662] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we developed an efficient and transition-metal-free multicomponent coupling reaction for the synthesis of aroyloxyl alkyl iodides. In the reaction among 2,4,6-triarylboroxines, THF, TMSCF3, LiOH, and NaI, five-component reactions could be precisely controlled by modulating CF3SO2Na, supplying one type of aroyloxyl alkyl iodides in moderate to high yields. The reaction exhibits good functional group tolerance and a wide substrate scope and can be easily transformed into other useful compounds. The mechanism is proposed on the basis of the control experiments.
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Affiliation(s)
- Wenjian Guan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Dong Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | | | - Wei Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Jiannan Xiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
| | - Nobuaki Kambe
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.,The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China
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35
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Huang Y, Zhao X, Chen D, Zheng Y, Luo J, Huang S. Access to Sulfocoumarins via Three‐Component Reaction of β‐Keto Sulfonyl Fluorides, Arynes, and DMF. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuan Huang
- Nanjing Forestry University International Innovation Center for Forest Chemicals and Materials Nanjing CHINA
| | - Xueyan Zhao
- Nanjing Forestry University International Innovation Center for Forest Chemicals and Materials Nanjing CHINA
| | - Dengfeng Chen
- Nanjing Forestry University International Innovation Center for Forest Chemicals and Materials Nanjing CHINA
| | - Yu Zheng
- Nanjing Forestry University Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing CHINA
| | - Jinyue Luo
- Nanjing Forestry University International Innovation Center for Forest Chemicals and Materials Nanjing CHINA
| | - Shenlin Huang
- Nanjing Forestry University College of Chemical Engineering No. 159, Longpan Road 210037 Nanjing CHINA
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36
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Gaykar RN, Deswal S, Guin A, Bhattacharjee S, Biju AT. Synthesis of Trisubstituted Oxazoles via Aryne Induced [2,3] Sigmatropic Rearrangement-Annulation Cascade. Org Lett 2022; 24:4145-4150. [PMID: 35666528 DOI: 10.1021/acs.orglett.2c01379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A transition-metal-free, [2,3] sigmatropic rearrangement-annulation cascade of 2-substituted thio/amino acetonitriles with arynes allowing the synthesis of 2,4,5-trisubstituted oxazoles under mild conditions has been demonstrated. The key sulfur/nitrogen ylides were generated by the initial S/N arylation followed by proton transfer, which was followed by the selective [2,3] sigmatropic rearrangement involving the -CN moiety and a subsequent annulation to afford the desired products in reasonable yields.
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Affiliation(s)
- Rahul N Gaykar
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Shiksha Deswal
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Avishek Guin
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Subrata Bhattacharjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
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37
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Garg P, Upreti GC, Singh A. Synthesis of Tritylones via Cascade Reaction of Arynes with 5-Ethoxyoxazoles. J Org Chem 2022; 87:7219-7228. [PMID: 35580308 DOI: 10.1021/acs.joc.2c00437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cascade reaction involving arynes and 5-ethoxyoxazoles has been developed toward the synthesis of 9-alkyl/aryl tritylones. 5-Ethoxyoxazoles undergo a [4 + 2] cycloaddition reaction with arynes followed by retro-[4 + 2] cycloaddition, a second intermolecular [4 + 2] cycloaddition reaction, and hydrolytic ring cleavage to generate substituted tritylones in good yields. The conversion of tritylone products to a series of spirocyclic anthrone derivatives has been demonstrated. The reaction is expeditious, exhibits wide scope, and employs readily available starting materials.
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Affiliation(s)
- Parul Garg
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Ganesh Chandra Upreti
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Anand Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
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38
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Pandya VG, Mhaske SB. Construction of tetrahydrobenzo[f]quinoline scaffolds via polar [4 + 2]-Cycloaddition reaction with arynes as dienophiles. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Hazra G, Mishra G, Dandela R, Thirupathi B. A Method to Access Highly Functionalized Dibenzobicyclo[3.2.1]octadienones: Application to the Construction of the 6/6/5/6/6 Carbon Skeleton of Rubialatin A. J Org Chem 2022; 87:11925-11938. [PMID: 35475607 DOI: 10.1021/acs.joc.2c00340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The dibenzobicyclo[3.2.1]octadienone scaffold, which has been found in naphthocyclinones, engelharquinones, rubialatin A, etc., has been synthesized under mild transition metal-free conditions by aryne insertion reaction with 2-keto-1,3-indandiones. The application of this methodology has been demonstrated for the synthesis of the 6/6/5/6/6 scaffold of rubialatin A. 1H NMR experimental studies confirm that the reaction proceeds through the formation of benzocyclobutane followed by a 7-member carbocycle ring.
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Affiliation(s)
- Gurupada Hazra
- Department of Chemical Sciences, Indian Institute of Science Education and Research Berhampur, Transit Campus, Govt. ITI Building, NH 59, Engineering School Road, Ganjam-District, Berhampur 760010, Odisha, India
| | - Gitanjali Mishra
- Department of Chemical Sciences, Indian Institute of Science Education and Research Berhampur, Transit Campus, Govt. ITI Building, NH 59, Engineering School Road, Ganjam-District, Berhampur 760010, Odisha, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indianoil Odisha Campus, Samantpuri, Bhubaneswar 751013, Odisha, India
| | - Barla Thirupathi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Berhampur, Transit Campus, Govt. ITI Building, NH 59, Engineering School Road, Ganjam-District, Berhampur 760010, Odisha, India
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40
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Li L, Shan C, Shi J, Li W, Lan Y, Li Y. The Stannum-Ene Reactions of Benzyne and Cyclohexyne with Superb Chemoselectivity for Cyclohexyne. Angew Chem Int Ed Engl 2022; 61:e202117351. [PMID: 35170157 DOI: 10.1002/anie.202117351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Indexed: 12/25/2022]
Abstract
The stannum-ene reactions of both benzyne and cyclohexyne were realized, which is particularly suitable for cyclohexyne with a broad substrate scope and excellent chemoselectivity. Our DFT calculations via distortion/interaction analysis revealed that both stannum- and hydrogen-ene reactions with cyclohexyne have later transition states due to their higher distortion energies in the transition states than those in benzyne reactions, which lead to enhanced Pauli repulsion as the decisive factor in the interaction energy accompanied with enlarged energy gap between two types of ene reactions. Therefore, excellent chemoselectivity was disclosed in the cyclohexyne-ene reaction.
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Affiliation(s)
- Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China.,College of Chemistry, Chongqing Normal University, Chongqing, 401331, P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China
| | - Wensheng Li
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China.,Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, P. R. China
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng St., Chongqing, 400030, P. R. China.,College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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41
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Yuan H, Lu D, Liang C, Mo D. Synthesis of Spirooxindole‐Benzo[d]oxazoles and Dihydrobenzofurans through Cycloaddition and Rearrangement of
N
‐Vinyl Nitrones and Arynes. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Hao Yuan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Dong‐Liu Lu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Dong‐Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Collaborative Innovation Center for Guangxi Ethnic Medicine School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004 People's Republic of China
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42
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Li L, Shan C, Shi J, Li W, Lan Y, Li Y. The Stannum–Ene Reactions of Benzyne and Cyclohexyne with Superb Chemoselectivity for Cyclohexyne. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lianggui Li
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Chunhui Shan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- College of Chemistry Chongqing Normal University Chongqing 401331 P. R. China
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
| | - Wensheng Li
- College of Chemistry and Chemical Engineering Chongqing University of Technology Chongqing 400054 P. R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou Henan 450001 P. R. China
| | - Yang Li
- School of Chemistry and Chemical Engineering Chongqing University 174 Shazheng St. Chongqing 400030 P. R. China
- College of Chemistry Jilin University Changchun 130012 P. R. China
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43
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Keck C, Hahn J, Gupta D, Bettinger HF. Solution Phase Reactivity of Dibenzo[c,e][1,2]azaborinine: Activation and Insertion into Si-E Single Bonds (E=H, OSi(CH 3 ) 3 , F, Cl) by a BN-Aryne. Chemistry 2022; 28:e202103614. [PMID: 34854508 PMCID: PMC9299606 DOI: 10.1002/chem.202103614] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Indexed: 11/24/2022]
Abstract
The boron-nitrogen analogue of ortho-benzyne, 1,2-azaborinine, is a reactive intermediate that features a formal boron-nitrogen triple bond. We here show by combining experimental and computational techniques that the Lewis acidity of the boron center of dibenzo[c,e][1,2]azaborinine allows interaction with the silicon containing single bonds Si-E through the silicon bonding partner E (E=F, Cl, OR, H). The binding to boron activates the Si-E bonds for subsequent insertion reaction. This shows that the BN-aryne is a ferocious species that even can activate and insert into the very strong Si-F bond.
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Affiliation(s)
- Constanze Keck
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Jennifer Hahn
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Divanshu Gupta
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Holger F. Bettinger
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
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44
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Haas TM, Wiesler S, Dürr‐Mayer T, Ripp A, Fouka P, Qiu D, Jessen HJ. The Aryne Phosphate Reaction**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Thomas M. Haas
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Stefan Wiesler
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Tobias Dürr‐Mayer
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Alexander Ripp
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
- DFG Cluster of Excellence “Living, Adaptive and Energy-Autonomous Materials Systems” (livMatS) 79110 Freiburg Germany
| | - Paraskevi Fouka
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Danye Qiu
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
| | - Henning J. Jessen
- Institute of Organic Chemistry Albert-Ludwigs University Freiburg Albertstraße 21 79102 Freiburg im Breisgau Germany
- DFG Cluster of Excellence “Living, Adaptive and Energy-Autonomous Materials Systems” (livMatS) 79110 Freiburg Germany
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45
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Haas TM, Wiesler S, Dürr‐Mayer T, Ripp A, Fouka P, Qiu D, Jessen HJ. The Aryne Phosphate Reaction. Angew Chem Int Ed Engl 2022; 61:e202113231. [PMID: 34727582 PMCID: PMC9299019 DOI: 10.1002/anie.202113231] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 11/10/2022]
Abstract
Condensed phosphates are a critically important class of molecules in biochemistry. Non-natural analogues are important for various applications, such as single-molecule real-time DNA sequencing. Often, such analogues contain more than three phosphate units in their oligophosphate chain. Consequently, investigations into phosphate reactivity enabling new ways of phosphate functionalization and oligophosphorylation are essential. Here, we scrutinize the potential of phosphates to act as arynophiles, paving the way for follow-up oligophosphorylation reactions. The aryne phosphate reaction is a powerful tool to-depending on the perspective-(oligo)phosphorylate arenes or arylate (oligo-cyclo)phosphates. Based on Kobayashi-type o-silylaryltriflates, the aryne phosphate reaction enables rapid entry into a broad spectrum of arylated products, like monophosphates, diphosphates, phosphodiesters and polyphosphates. The synthetic potential of these new transformations is demonstrated by efficient syntheses of nucleotide analogues and an unprecedented one-flask octaphosphorylation.
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Affiliation(s)
- Thomas M. Haas
- Institute of Organic ChemistryAlbert-Ludwigs University FreiburgAlbertstraße 2179102Freiburg im BreisgauGermany
| | - Stefan Wiesler
- Institute of Organic ChemistryAlbert-Ludwigs University FreiburgAlbertstraße 2179102Freiburg im BreisgauGermany
| | - Tobias Dürr‐Mayer
- Institute of Organic ChemistryAlbert-Ludwigs University FreiburgAlbertstraße 2179102Freiburg im BreisgauGermany
| | - Alexander Ripp
- Institute of Organic ChemistryAlbert-Ludwigs University FreiburgAlbertstraße 2179102Freiburg im BreisgauGermany
- DFG Cluster of Excellence “Living, Adaptive and Energy-Autonomous Materials Systems” (livMatS)79110FreiburgGermany
| | - Paraskevi Fouka
- Institute of Organic ChemistryAlbert-Ludwigs University FreiburgAlbertstraße 2179102Freiburg im BreisgauGermany
| | - Danye Qiu
- Institute of Organic ChemistryAlbert-Ludwigs University FreiburgAlbertstraße 2179102Freiburg im BreisgauGermany
| | - Henning J. Jessen
- Institute of Organic ChemistryAlbert-Ludwigs University FreiburgAlbertstraße 2179102Freiburg im BreisgauGermany
- DFG Cluster of Excellence “Living, Adaptive and Energy-Autonomous Materials Systems” (livMatS)79110FreiburgGermany
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46
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Liu S, Xie P, Wu L, Zhao J, Cai Z, He L. Transition-Metal-Free Synthesis of 4-Amino Isoquinolin-1(2H)-ones via Tandem Reaction of Arynes and Oxazoles. Org Chem Front 2022. [DOI: 10.1039/d1qo01666k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and transition-metal-free method for the synthesis of 4-amino isoquinolin-1(2H)-ones has been developed. Arynes react with 4, 5-disubstituted oxazoles through a tandem Diels-Alder reaction/dehydrogenation-aromatization/tautamerization process to produce 4-amino isoquinolin-1(2H)-ones...
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47
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Cui D, Feng Y, Gan Y, Yin J, Wang W, Fan Y, Gao L, Ke B, Song Z. (3 + 2)-Annulation of 1,3- N, Si-tetraorganosilane reagents TsHNCH 2SiBnR 1R 2 with arynes for efficient synthesis of 3-silaindolines. Org Chem Front 2022. [DOI: 10.1039/d2qo01075e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,3-N,Si-Tetraorganosilane reagents TsHNCH2SiBnR1R2 were developed as robust synthons to prepare 3-silaindolines via a Cs2CO3-promoted (3 + 2)-annulation reaction with arynes.
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Affiliation(s)
- Deyun Cui
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ying Feng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yu Gan
- Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan university, Chengdu, 610041, China
| | - Jiaqi Yin
- Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan university, Chengdu, 610041, China
| | - Wanshu Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yu Fan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Lu Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Bowen Ke
- Department of Anesthesiology, Laboratory of Anesthesia and Critical Care Medicine, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital, Sichuan university, Chengdu, 610041, China
| | - Zhenlei Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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48
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Chen WL, Liu ZW, Wang YC, Ma XP, Mo DL. MnSO4-Promoted S-O Bond Cleavage to Synthesize Functionalized Sulfonium Ylides from Activated Alkynes and Sulfoxides. Org Biomol Chem 2022; 20:1656-1661. [DOI: 10.1039/d1ob02491d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of functionalized sulfonium ylides were prepared in good yields through MnSO4-promoted S-O bond cleavage from activated alkynes and sulfoxides. Experimental results showed that MnSO4-catalyst played important roles to...
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Liu J, Tang S, Zhao M, Huai J, Yu J, Zhao J, Li P. Reactivity of Vinyl Epoxides/Oxetanes/Cyclopropanes toward Arynes: Access to Functionalized Phenanthrenes. ACS OMEGA 2021; 6:35852-35865. [PMID: 34984314 PMCID: PMC8717566 DOI: 10.1021/acsomega.1c06166] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
The reactivity of vinyl epoxides/oxetanes/cyclopropanes toward arynes has been demonstrated under mild conditions to give the corresponding phenanthrenes in moderate to good yields. This transition-metal-free cascade process involves a series of Diels-Alder reaction, ring-opening aromatization, and ene reaction. Various functionalized phenanthrenes could be synthesized utilizing the versatile hydroxy group. Interestingly, vinyl epoxides/oxiranes experience preferentially the Diels-Alder reaction toward arynes over nucleophilic attack of epoxides/oxiranes.
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Zhang MM, Zhan ZZ, Wang M, Wang HS, Huang GS. Direct Synthesis of 2,4,6‐Trisubstituted Pyrimidines
via
Base‐Mediated One‐Pot Multicomponent Reaction. ChemistrySelect 2021. [DOI: 10.1002/slct.202103621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ming M. Zhang
- State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province Department of Chemistry Lanzhou University Lanzhou P. R. China
| | - Zhen Z. Zhan
- State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province Department of Chemistry Lanzhou University Lanzhou P. R. China
| | - Meng Wang
- State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province Department of Chemistry Lanzhou University Lanzhou P. R. China
| | - He S. Wang
- State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province Department of Chemistry Lanzhou University Lanzhou P. R. China
| | - Guo S. Huang
- State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province Department of Chemistry Lanzhou University Lanzhou P. R. China
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