1
|
Cui SQ, Zhang DB, Wei ZL, Liao WW. Construction of Functionalized α-Imino Ketones via Pd-Catalyzed C-H Addition to Nitriles/Aerobic Oxidation Sequences. J Org Chem 2023; 88:16018-16023. [PMID: 37930958 DOI: 10.1021/acs.joc.3c01934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Pd(II)-catalyzed addition of sp2 C-H to nitrile/aerobic oxidation sequences for the preparation of functionalized α-imino ketones is described in which readily available heteroarenes and O-acyl cyanohydrins were employed. Various functionalized targeted molecules can be prepared in good yields with high atom and step economy. Moreover, a broad substrate scope and the ready manipulation and availability of the reaction partners enable this protocol to be appealing to explore the chemical space of the construction of functionalized α-imino ketones with high efficiency.
Collapse
Affiliation(s)
- Shu-Qiang Cui
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Dian-Bo Zhang
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P R China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P R China
| |
Collapse
|
2
|
Xie JM, Zhu YL, Fu YM, Zhu CF, Cheng LJ, You YE, Wu X, Li YG. Gold-Catalyzed Cascade Reaction of 2-Alkynyl Aryl Azides with Enecarbamates for Direct Synthesis of α-(3-Indolyl)ketones. Org Lett 2023; 25:421-425. [PMID: 36622839 DOI: 10.1021/acs.orglett.2c04147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
α-(3-Indolyl)ketones are essential building blocks for the generation of biologically active molecules. We described a new method for the direct assembly of α-(3-indolyl)ketones through the cascade reaction of 2-alkynyl aryl azides with enecarbamates, in which the in situ generated α-imino gold carbene intermediate was trapped by enecarbamate to achieve umpolung reactivity of indole at the 3-position.
Collapse
Affiliation(s)
- Jin-Ming Xie
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Yun-Long Zhu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Yan-Ming Fu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Cheng-Feng Zhu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Lan-Jun Cheng
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Yang-En You
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - Xiang Wu
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| | - You-Gui Li
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei230009, China
| |
Collapse
|
3
|
Cao W, Dou Y, Kouklovsky C, Vincent G. Total Synthesis of Ophiorrhine A, G and Ophiorrhiside E Featuring a Bioinspired Intramolecular Diels–Alder Cycloaddition**. Angew Chem Int Ed Engl 2022; 61:e202209135. [PMID: 35869029 PMCID: PMC9543224 DOI: 10.1002/anie.202209135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Indexed: 11/18/2022]
Abstract
We report the first total synthesis of the monoterpene indole alkaloids ophiorrhine A via a late stage bioinspired intramolecular Diels–Alder cycloaddition to form the intricate bridged and spirannic polycyclic system. Several strategies were investigated to construct the indolopyridone moiety of ophiorrhiside E, the postulated biosynthetic precursor of ophiorrhine A. Eventually, the Friedel–Crafts‐type coupling of N‐methyl indolyl‐acetamide with a secologanin‐derived acid chloride delivered ophiorrhine G. Cyclodehydration of a protected form of the latter was followed by the desired spontaneous intramolecular Diels–Alder cycloaddition of protected ophiorrhiside E leading to ophiorrhine A.
Collapse
Affiliation(s)
- Wei Cao
- Institut de Chimie Moléculaire et des Matériaux d'OrsayUniversité Paris-SaclayCNRS91405OrsayFrance
| | - Yingchao Dou
- Institut de Chimie Moléculaire et des Matériaux d'OrsayUniversité Paris-SaclayCNRS91405OrsayFrance
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire et des Matériaux d'OrsayUniversité Paris-SaclayCNRS91405OrsayFrance
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d'OrsayUniversité Paris-SaclayCNRS91405OrsayFrance
| |
Collapse
|
4
|
Rakshit A, Dhara HN, Sahoo AK, Patel BK. The Renaissance of Organo Nitriles in Organic Synthesis. Chem Asian J 2022; 17:e202200792. [PMID: 36047749 DOI: 10.1002/asia.202200792] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/31/2022] [Indexed: 11/11/2022]
Abstract
In the arena of functional group-oriented organic synthesis, the nitrile or cyano functionality is of immense importance. The presence of nucleophilic N -atom, π-coordinating ability of the triple bond, and electrophilic C-center imparts unique and interesting reactivity. Owing to the ability of the nitrile to transform into various other functional groups or intermediates, the chemistry is very rich and diverse. In particular, the involvement of nitrile in numerous organic reactions such as inter- or intramolecular alkyne insertion, [2 + 2 + 2] cycloaddition with alkynes, [3 + 2] cycloaddition with azides, [4 + 2] cycloaddition with diene allow the synthesis of many important carbocycles and heterocycles. Furthermore, the nitrile serves as a directing group in many C-H bond functionalization reactions to introduce diverse functionality and participate as a radical acceptor in radical cascade strategies to obtain a large variety of functional molecules. This review mainly focuses on the reactivity and diverse synthetic application of the nitrile including C-H bond functionalization, alkyne insertion, cycloaddition, and thermal or photochemical cascade strategy. The objective of the current review aims at bringing out the striking collection of various nitrile-triggered organic transformations.
Collapse
Affiliation(s)
- Amitava Rakshit
- IIT Guwahati: Indian Institute of Technology Guwahati, Chemistry, INDIA
| | | | | | - Bhisma K Patel
- Indian Institute of Technology Guwahati, Chemistry, North Guwahati-781 039, 781 039, Guwahati, INDIA
| |
Collapse
|
5
|
Cao W, Dou Y, Kouklovsky C, Vincent G. Total Synthesis of Ophiorrhine A, G and Ophiorrhiside E Featuring a Bioinspired Intramolecular Diels‐Alder Cycloaddition. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209135] [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)
- Wei Cao
- Universite Paris-Saclay Institut de Chimie Moléculaire et des Matériaux d'Orsay FRANCE
| | - Yingchao Dou
- Universite Paris-Saclay Institut de Chimie Moléculaire et des Matériaux d'Orsay FRANCE
| | - Cyrille Kouklovsky
- Universite Paris-Saclay Institut de Chimie Moléculaire et des Matériaux d'Orsay FRANCE
| | - Guillaume Vincent
- Universite Paris-Saclay Institut de Chimie Moléculaire et des Matériaux d'Orsay 15, Boulevard Georges ClemenceauBat. 410 91405 Orsay FRANCE
| |
Collapse
|
6
|
Thombal RS, Rubio PYM, Lee D, Maiti D, Lee YR. Modern Palladium-Catalyzed Transformations Involving C–H Activation and Subsequent Annulation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00813] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Raju S. Thombal
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Peter Yuosef M. Rubio
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | | | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| |
Collapse
|
7
|
Ma QQ, Li CJ, Liao WW. Selective synthesis of functionalized α,β-multi-substituted α-amino cyclopentanones via an α-iminol rearrangement enabled by Pd-catalyzed addition of arylboronic acids to nitriles. Org Chem Front 2022. [DOI: 10.1039/d2qo01488b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An efficient approach to construct α, β-multi-substituted α-amino cyclopentanones is described through an α-iminol rearrangement enabled by Pd-catalyzed addition of arylboronic acids to nitriles.
Collapse
Affiliation(s)
- Qian-Qian Ma
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Cheng-Jing Li
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P R China
| |
Collapse
|
8
|
Cui SQ, Cheng N, Ma QQ, Wei ZL, Liao WW. Palladium-catalyzed direct construction of oxazoline-containing polycyclic scaffolds via tandem addition/cyclization of nitriles and arylboronic acids. Org Chem Front 2022. [DOI: 10.1039/d1qo01260f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
An efficient construction of oxazoline-containing polycyclic scaffolds through a Pd-catalyzed addition/cyclization of (hetero)arene tethered O-acyl cyanohydrin units and arylboronic acids is described.
Collapse
Affiliation(s)
- Shu-Qiang Cui
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Na Cheng
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Qian-Qian Ma
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P R China
| |
Collapse
|
9
|
Liao WW, Cui SQ. Recent Advances in Transition-Metal-Catalyzed C–H Addition to Nitriles. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AbstractTransition-metal-catalyzed C–H bond addition to nitriles has emerged as a powerful synthetic approach for the construction of C–C bonds in organic synthesis. Due to the merits of atom- and step-economy, as well the easy availability of the starting materials, these transformations not only deliver acyclic aryl ketone products with nitriles as C-building blocks, but can also be utilized for the highly efficient assembly of azaheterocyclic skeletons using nitriles as C–N building blocks. This short review summarizes recent progress on transition-metal-catalyzed C–C bond-forming reactions based on C(sp2)–H and C(sp3)–H additions to nitriles.1 Introduction2 Palladium-Catalyzed C–H Addition to Nitriles2.1 Palladium-Catalyzed C–H Addition to Nitriles for the Preparation of Ketone (Imine) Products2.2 Palladium-Catalyzed C–H Addition to Nitriles for the Preparation of Azaheterocycles2.3 Palladium-Catalyzed C–H Addition to Nitriles/1,2-Rearangement3 Other Transition-Metal-Catalyzed C–H Additions to Nitriles4 Summary and Outlook
Collapse
Affiliation(s)
- Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences
| | - Shu-Qiang Cui
- Department of Organic Chemistry, College of Chemistry, Jilin University
| |
Collapse
|
10
|
Li Y, Geng L, Song Z, Zhang Z. A DFT study of NHC-catalyzed reactions between 2-bromo-2-enals and acylhydrazones: mechanisms, and chemo- and stereoselectivities. NEW J CHEM 2022. [DOI: 10.1039/d2nj01078j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The reaction mechanisms and origins of the chemo- and stereoselectivities of NHC-catalyzed [4 + 2] annulation of 2-bromo-2-enals and acylhydrazones.
Collapse
Affiliation(s)
- Yan Li
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
| | - Lina Geng
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
| | - Zhiyi Song
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
| | - Zhiqiang Zhang
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, P. R. China
| |
Collapse
|
11
|
Akitake M, Noda S, Miyoshi K, Sonoda M, Tanimori S. Access to γ-Carbolines: Synthesis of Isocryptolepine. J Org Chem 2021; 86:17727-17737. [PMID: 34866396 DOI: 10.1021/acs.joc.1c02026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A new method to synthesize γ-carboline derivatives has been developed starting from 3,5-dibromo-4-pyridinamine by monoarylation using the Suzuki-Miyaura cross-coupling reaction followed by the base-mediated ring closure to pyrrole formation. Synthesis of a series of γ-carboline derivations from the 4-brominated γ-carboline 4a has been achieved by employing various coupling reactions and N-alkylations. This method has been applied for the synthesis of the antimalarial and anticancer natural product isocryptolepine. The photophysical properties of novel γ-carboline derivations are also reported.
Collapse
Affiliation(s)
- Masahiro Akitake
- Department of Applied Biological Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuencho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Shizuki Noda
- Department of Applied Biological Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuencho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Kohei Miyoshi
- Department of Applied Biological Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuencho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Motohiro Sonoda
- Department of Applied Biological Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuencho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Shinji Tanimori
- Department of Applied Biological Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuencho, Nakaku, Sakai, Osaka 599-8531, Japan
| |
Collapse
|
12
|
Shcherbakov NV, Chikunova EI, Dar'in D, Kukushkin VY, Dubovtsev AY. Redox-Neutral and Atom-Economic Route to β-Carbolines via Gold-Catalyzed [4 + 2] Cycloaddition of Indolylynamides and Cyanamides. J Org Chem 2021; 86:17804-17815. [PMID: 34812641 DOI: 10.1021/acs.joc.1c02119] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Gold(I)-catalyzed [4 + 2] cycloaddition of indolylynamides and cyanamides (aminonitriles) is an efficient redox-neutral and atom-economic route to diversely substituted 1,3-diamino-β-carbolines. The protocol operates under mild conditions (Ph3PAuNTf2 5 mol %, DCE, 60 °C) with a good tolerance to functional groups (23 examples and yields up to 98%). The obtained β-carboline systems represent a versatile synthetic platform with modifiable substituents for successive functionalizations. Control experiments indicate the crucial role of both the nature of reactants and the identity of employed catalysts in the developed cycloaddition.
Collapse
Affiliation(s)
- Nikolay V Shcherbakov
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Elena I Chikunova
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Dmitry Dar'in
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Vadim Yu Kukushkin
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| | - Alexey Yu Dubovtsev
- Saint Petersburg State University, Universitetskaya Nab. 7/9, 199034 Saint Petersburg, Russian Federation
| |
Collapse
|
13
|
Bai C, Guo H, Liu X, Liu D, Sun Z, Bao A, Baiyin M, Muschin T, Bao YS. [3 + 2 + 1] Pyridine Skeleton Synthesis Using Acetonitrile as C4N1 Units and Solvent. J Org Chem 2021; 86:12664-12675. [PMID: 34463102 DOI: 10.1021/acs.joc.1c01194] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The first [3 + 2 + 1] methodology for pyridine skeleton synthesis via cascade carbopalladation/cyclization of acetonitrile, arylboronic acids, and aldehydes was developed. This reaction proceeds via six step tandem reaction sequences involving the carbopalladation reaction of acetonitrile, a nucleophilic addition, a condensation, an intramolecular Michael addition, cyclization, and aromatization. Delightfully, both palladium acetate and supported palladium nanoparticles catalyzed this reaction with similar catalytic performance. The characterization results of the fresh and used supported palladium nanoparticle catalysts indicated that the reaction might be performed via a Pd(0)/Pd(II) catalytic cycle that began with Pd(0). Furthermore, the products showed good fluorescence characteristics. The green homogeneous/heterogenous catalytic methodologies pave a new way for constructing the pyridine skeleton.
Collapse
Affiliation(s)
- Chaolumen Bai
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Huifang Guo
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Xin Liu
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Dan Liu
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Zhaorigetu Sun
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010020, China
| | - Agula Bao
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Menghe Baiyin
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Tegshi Muschin
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| | - Yong-Sheng Bao
- College of Chemistry and Environmental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University, Hohhot 010022, China
| |
Collapse
|
14
|
Dudhe P, Krishnan MA, Yadav K, Roy D, Venkatasubbaiah K, Pathak B, Chelvam V. Synthesis of 1-indolyl-3,5,8-substituted γ-carbolines: one-pot solvent-free protocol and biological evaluation. Beilstein J Org Chem 2021; 17:1453-1463. [PMID: 34221174 PMCID: PMC8218543 DOI: 10.3762/bjoc.17.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/07/2021] [Indexed: 12/12/2022] Open
Abstract
1,5-Disubstituted indole-2-carboxaldehyde derivatives 1a-h and glycine alkyl esters 2a-c are shown to undergo a novel cascade imination-heterocylization in the presence of the organic base DIPEA to provide 1-indolyl-3,5,8-substituted γ-carbolines 3aa-ea in good yields. The γ-carbolines are fluorescent and exhibit anticancer activities against cervical, lung, breast, skin, and kidney cancer cells.
Collapse
Affiliation(s)
- Premansh Dudhe
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453 552, India
| | - Mena Asha Krishnan
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453 552, India
| | - Kratika Yadav
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453 552, India
| | - Diptendu Roy
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453 552, India
| | - Krishnan Venkatasubbaiah
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar-752 050, Odisha, India
| | - Biswarup Pathak
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453 552, India
| | - Venkatesh Chelvam
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453 552, India.,Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore-453 552, India
| |
Collapse
|
15
|
Application of Transition Metal‐Catalyzed C−H Activation Strategies in the Synthesis and Functionalization of β‐Carbolines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100055] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
16
|
A convenient synthesis of β-carbolines by iron-catalyzed aerobic decarboxylative/dehydrogenative aromatization of tetrahydro-β-carbolines under air. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.131960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
17
|
Zhang H, Zhang R, Wang L, Li Y, Liao S, Zhou M. Synthesis Strategies for α‐, β‐, γ‐ and δ‐Carbolines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000690] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hong Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Rong‐Hong Zhang
- National Joint Local Engineering Laboratory for Cell Engineering and Biomedicine Technique Guizhou Province Key Laboratory of Regenerative Medicine Key Laboratory of Adult Stem Cell Translational Research (Chinese Academy of Medical Sciences) Center for Tissue Engineering and Stem Cell Research Guizhou Medical University Guiyang 550004 PR China
| | - Li‐Xia Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Yong‐Jun Li
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Shang‐Gao Liao
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| | - Meng Zhou
- State Key Laboratory of Functions and Applications of Medicinal Plants Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education) Guizhou Medical University Guiyang 550004 P. R. China
- School of Pharmacy Guizhou Medical University Guian New District Guizhou 550004 P. R. China
| |
Collapse
|
18
|
Cheng N, Cui SQ, Ma QQ, Wei ZL, Liao WW. α-Iminol Rearrangement Triggered by Pd-Catalyzed C-H Addition to Nitriles Sequences: Synthesis of Functionalized α-Amino Cyclopentanones. Org Lett 2021; 23:1021-1025. [PMID: 33496596 DOI: 10.1021/acs.orglett.0c04214] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A α-iminol rearrangement triggered by Pd-catalyzed C-H addition of electronic-rich heteroarenes to cyclobutanone-derived O-acyl cyanohydrins was described, which provided a practical and efficient protocol for the preparation of functionalized α-amino cyclopentanones in an atom- and step-economic fashion. In addition, further synthetic transformations of products have also been demonstrated.
Collapse
Affiliation(s)
- Na Cheng
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China
| | - Shu-Qiang Cui
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China
| | - Qian-Qian Ma
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P.R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China
| |
Collapse
|
19
|
Dai L, Yu S, Shao Y, Li R, Chen Z, Lv N, Chen J. Palladium-catalyzed C-H activation of simple arenes and cascade reaction with nitriles: access to 2,4,5-trisubstituted oxazoles. Chem Commun (Camb) 2021; 57:1376-1379. [PMID: 33433549 DOI: 10.1039/d0cc07547g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient and straightforward protocol for the assembly of the pharmaceutically and biologically valuable oxazole skeleton is achieved for the first time from readily available simple arenes and functionalized aliphatic nitriles. This transformation involves palladium-catalyzed C-H activation, carbopalladation and a tandem annulation sequence in one pot. Notably, the reaction proceeds efficiently under redox-neutral conditions, and exhibits high atom-economy. Deuterium-labeling experiments suggested that C-H bond cleavage of the simple arenes might be the rate-determining step.
Collapse
Affiliation(s)
- Ling Dai
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | | | | | | | | | | | | |
Collapse
|
20
|
Zhao L, Yan ZH, Tang S, Wei ZL, Liao WW. Brønsted Acid-Promoted Cyclodimerization of Indolyl Ketones: Construction of Indole Fused-Oxabicyclo[3.3.1]nonane and -Cyclooctatetraene Ring Systems. Org Lett 2021; 23:166-171. [PMID: 33306402 DOI: 10.1021/acs.orglett.0c03895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Brønsted acid-promoted cyclodimerization of C(3)-, C(2)-, or N(1)-substituted indole ketone derivatives is described. A wide range of structurally diverse bisindole fused-9-oxabicyclo[3.3.1]nonane and bisindole fused-cyclooctatetraene (COT) derivatives can be prepared in good to high yields with high efficiency.
Collapse
Affiliation(s)
- Lang Zhao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhi-Hua Yan
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Shuai Tang
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhong-Lin Wei
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| |
Collapse
|
21
|
Banerjee A, Kundu S, Bhattacharyya A, Sahu S, Maji MS. Benzannulation strategies for the synthesis of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines. Org Chem Front 2021. [DOI: 10.1039/d1qo00092f] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review presents a critical and authoritative analysis of several exciting benzannulation approaches developed in the past decade for the construction of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines.
Collapse
Affiliation(s)
- Ankush Banerjee
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Kundu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Arya Bhattacharyya
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Sahu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Modhu Sudan Maji
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| |
Collapse
|
22
|
Jiang B, Jia J, Sun Y, Wang Y, Zeng J, Bu X, Shi L, Sun X, Yang X. γ-Carboline synthesis enabled by Rh(iii)-catalysed regioselective C-H annulation. Chem Commun (Camb) 2020; 56:13389-13392. [PMID: 33034593 DOI: 10.1039/d0cc04740f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A redox-neutral Rh(iii)-catalyzed C-H annulation of indolyl oximes was developed. Relying on the use of various alkynyl silanes as the terminal alkyne surrogates, the reaction exhibited a reverse regioselectivity, thus giving an exclusive and easy way for the synthesis of a wide range of substituent free γ-carbolines at C3 position with high efficiency. Deuterium-labelling experiments and kinetic analysis have preliminarily shed light on the working mode of this catalytic system.
Collapse
Affiliation(s)
- Bo Jiang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, P. R. China.
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Laaroussi H, Ding Y, Teng Y, Deschamps P, Vidal M, Yu P, Broussy S. Synthesis of indole inhibitors of silent information regulator 1 (SIRT1), and their evaluation as cytotoxic agents. Eur J Med Chem 2020; 202:112561. [PMID: 32711231 DOI: 10.1016/j.ejmech.2020.112561] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/09/2020] [Accepted: 06/09/2020] [Indexed: 11/16/2022]
Abstract
A series of achiral indole analogues of the selective sirtuin inhibitor EX-527 (a racemic, substituted 1,2,3,4 tetrahydrocarbazole) was designed to stabilize the bioactive conformation, and synthesized. These new indoles were evaluated against the isolated sirtuin enzymes SIRT1 and SIRT2, and against a panel of nine human cell lines. Structure-activity relationship studies demonstrated the influence of the substituent at position 3 of the indole. The most potent SIRT1 inhibitor 3h, bearing an isopropyl substituent, was as potent as EX-527, and more selective for SIRT1 over SIRT2. Compound 3g, bearing a benzyl substituent, inhibited both sirtuins at micromolar concentration and was more cytotoxic than EX-527 on several cancer cell lines.
Collapse
Affiliation(s)
- Hanna Laaroussi
- Université de Paris, CiTCoM, 8038 CNRS, U 1268 INSERM, F-75006, Paris, France
| | - Ying Ding
- China International Science and Technology, Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Yuou Teng
- China International Science and Technology, Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | | | - Michel Vidal
- Université de Paris, CiTCoM, 8038 CNRS, U 1268 INSERM, F-75006, Paris, France; Service Biologie Du Médicament, Toxicologie, AP-HP, Hôpital Cochin, F-75014, Paris, France
| | - Peng Yu
- China International Science and Technology, Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Sylvain Broussy
- Université de Paris, CiTCoM, 8038 CNRS, U 1268 INSERM, F-75006, Paris, France.
| |
Collapse
|
24
|
Kamlah A, Bracher F. A Novel Approach to Highly Substituted β‐Carbolines via Reductive Ring Transformation of 2‐Acyl‐3‐isoxazolylindoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000230] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Alexandra Kamlah
- Department of Pharmacy Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| | - Franz Bracher
- Department of Pharmacy Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| |
Collapse
|
25
|
Talukdar R. Ir III-Catalyzed direct syntheses of amides and esters using nitriles as acid equivalents: a photochemical pathway. NEW J CHEM 2020. [DOI: 10.1039/d0nj00002g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An unprecedented IrIII[df(CF3)ppy]2(dtbbpy)PF6-catalyzed simple photochemical process for direct addition of amines and alcohols to the relatively less reactive nitrile triple bond is described herein.
Collapse
Affiliation(s)
- Ranadeep Talukdar
- Molecular Synthesis and Drug Discovery Laboratory
- Centre of Biomedical Research
- Sanjay Gandhi Postgraduate Institute of Medical Sciences
- Lucknow 226014
- India
| |
Collapse
|
26
|
Xiong W, Chen Z, Shao Y, Li R, Hu K, Chen J. The synthesis of fluorescent benzofuro[2,3-c]pyridines via palladium-catalyzed heteroaromatic C–H addition and sequential tandem cyclization. Org Chem Front 2020. [DOI: 10.1039/c9qo01491h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pd-catalyzed tandem reaction of 2-(cyanomethoxy)chalcones with heteroarenes (such as thiophenes, furans, pyrroles and indoles) for the synthesis of fluorescent benzofuro[2,3-c]pyridines.
Collapse
Affiliation(s)
- Wenzhang Xiong
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Zhongyan Chen
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Renhao Li
- School of Pharmaceutical Sciences
- Wenzhou Medical University
- Wenzhou 325035
- China
| | - Kun Hu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- China
| |
Collapse
|
27
|
Velezheva VS, Babii OL, Khodak AA, Alekseeva EA, Nelyubina YV, Godovikov IA, Peregudov AS, Majorov KB, Nikonenko BV. Novel base-initiated cascade reactions of hemiindigos to produce dipolar γ-carbolines and indole-fused pentacycles. RSC Adv 2019; 9:41402-41408. [PMID: 35541627 PMCID: PMC9076487 DOI: 10.1039/c9ra07807j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/04/2019] [Indexed: 12/03/2022] Open
Abstract
Novel continuous-flow cascade reactions are developed for producing 1,4-diaryl-disubstituted dipolar γ-carbolines 2 that contain a carboxylate group and their two pentacyclic precursors 6, 7 from hemiindigos 1. The nucleophilic and pro-electrophilic chemistry described is new to the hemiindigos 1, and it led to the discovery of antimycobacterial scaffold characteristic of rimino-type pentacycles 6, 7 and potent drug clofazimine. The new scaffold like clofazimine appears to be useful in developing lead agents active against drug-resistant/dormant TB. Based on hemiindigos we developed novel reactions for producing γ-carbolines and their precursors that appeared to be active against MTB.![]()
Collapse
Affiliation(s)
- V S Velezheva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - O L Babii
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - A A Khodak
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - E A Alekseeva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - Yu V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - I A Godovikov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - A S Peregudov
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova St. 28 119991 GSP-1, Moscow Russia
| | - K B Majorov
- Laboratory for Immunogenetics, Central Institute for Tuberculosis Moscow Russia
| | - B V Nikonenko
- Laboratory for Immunogenetics, Central Institute for Tuberculosis Moscow Russia
| |
Collapse
|
28
|
Reddy CR, Aila M, Sathish P, Mrinalini M, Giribabu L, Prasanthkumar S, Grée R. Metal-free propargylation/aza-annulation approach to substituted β-carbolines and evaluation of their photophysical properties. Org Biomol Chem 2019; 17:9291-9304. [PMID: 31626261 DOI: 10.1039/c9ob01959f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient acid-catalyzed propargylation/aza-annulation sequence was developed under metal-free reaction conditions, thus leading to a one-pot synthesis of a variety of substituted β-carbolines starting from propargylic alcohols and indole 2-carbonyls. This versatile strategy was further extended to the synthesis of 5-azaindoles and 5-azabenzothiazoles. Optical properties suggested that manipulation of electron donor and acceptor moieties on β-carbolines has an impact on their ground and excited state electronic behavior. This leads to blue or green emission and should facilitate the development of organic light emitting diodes (OLEDs). Electrochemical and stability studies revealed that 4a-6 shows ease of redox activity and photostability during illumination.
Collapse
Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
| | | | | | | | | | | | | |
Collapse
|
29
|
Kundu S, Banerjee A, Maji MS. Brønsted Acid-Catalyzed Tandem Pinacol-Type Rearrangement for the Synthesis of α-(3-Indolyl) Ketones by Using α-Hydroxy Aldehydes. J Org Chem 2019; 84:16003-16012. [PMID: 31747752 DOI: 10.1021/acs.joc.9b02474] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Samrat Kundu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Ankush Banerjee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| |
Collapse
|
30
|
Hung TQ, Hieu DT, Van Tinh D, Do HN, Nguyen Tien TA, Van Do D, Son LT, Tran NH, Van Tuyen N, Tan VM, Ehlers P, Dang TT, Langer P. Efficient access to β- and γ-carbolines from a common starting material by sequential site-selective Pd-catalyzed C–C, C–N coupling reactions. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130569] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
31
|
Banerjee A, Maji MS. A Brønsted Acid Catalyzed Cascade Reaction for the Conversion of Indoles to α-(3-Indolyl) Ketones by Using 2-Benzyloxy Aldehydes. Chemistry 2019; 25:11521-11527. [PMID: 31283058 DOI: 10.1002/chem.201902268] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/04/2019] [Indexed: 11/10/2022]
Abstract
A Brønsted acid catalyzed, operationally simple, scalable route to several functionalized α-(3-indolyl) ketones has been developed and the long-standing regioisomeric issue has been eliminated by choosing appropriate carbonyls. A readily available and cheap bottle reagent was used as the catalyst. This protocol was also applicable to the synthesis of densely functionalized α-(3-pyrrolyl) ketones. A detailed mechanistic study confirmed the involvement of enolether as a reaction intermediate. Several postsynthetic modifications along with easy access to β-carboline, tryptamines, tryptophols, and spiro-indolenine proclaim the synthetic utility of this powerful building block. On the basis of this concept, functionalized carbazoles were constructed by a cascade annulation strategy.
Collapse
Affiliation(s)
- Ankush Banerjee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, W.B., India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, W.B., India
| |
Collapse
|
32
|
Wang Z, Yu Z, Yao Y, Zhang Y, Xiao X, Wang B. A practical synthesis of β-carbolines by tetra-n-butylammonium bromide (TBAB)-mediated cycloaromatization reaction of aldehydes with tryptophan derivatives. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
33
|
Zhang Z, Sun K, Li S, Yu G. A pillar[5]arene-based molecular grapple of hexafluorophosphate. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.01.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
34
|
Zhang D, Song H, Cheng N, Liao WW. Synthesis of 2,4,5-Trisubstituted Oxazoles via Pd-Catalyzed C-H Addition to Nitriles/Cyclization Sequences. Org Lett 2019; 21:2745-2749. [PMID: 30931572 DOI: 10.1021/acs.orglett.9b00700] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A practical and flexible intermolecular protocol for the diverse synthesis of trisubstituted oxazole derivatives via a Pd-catalyzed direct C-H addition of electronic-rich heteroarenes to O-acyl cyanohydrins bearing an α-hydrogen/cyclization sequence is described. A wide range of trisubstituted oxazoles can be prepared from readily available starting materials in good to high yields with high efficiency under redox neutral reaction conditions.
Collapse
Affiliation(s)
- Di Zhang
- Department of Organic Chemistry, College of Chemistry , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Hao Song
- Department of Organic Chemistry, College of Chemistry , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Na Cheng
- Department of Organic Chemistry, College of Chemistry , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| |
Collapse
|
35
|
Wang Z, Li T, Xing S, Zhu B. Highly Efficient Construction of Pentacyclic Carboline-Containing Salts via a [Cp*RhCl2]2-Catalyzed Tandem Reaction. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800642] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhuo Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Tongyu Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry; Tianjin Normal University; Tianjin 300387 People's Republic of China
| |
Collapse
|
36
|
Recio J, Pérez-Redondo A, Alvarez-Builla J, Burgos C. Access to 2-substituted 1-pyridin-3-yl-β-carboline derivatives by intramolecular radical cyclization-ring opening-SNAr substitution. Org Chem Front 2019. [DOI: 10.1039/c9qo00944b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new method for the synthesis of 1-pyridin-3-yl-β-carboline derivatives involving an intramolecular radical reaction and SNAr substitution, is described.
Collapse
Affiliation(s)
- Javier Recio
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
| | - Adrián Pérez-Redondo
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
| | - Julio Alvarez-Builla
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
| | - Carolina Burgos
- Departamento de Química Orgánica y Química Inorgánica and Instituto de Investigación Química "Andrés M. del Río" (IQAR)
- Universidad de Alcalá
- 28805-Alcalá de Henares
- Madrid
- Spain
| |
Collapse
|
37
|
Song H, Cheng N, She LQ, Wu Y, Liao WW. Efficient synthesis of spirooxindolyl oxazol-2(5H)-ones via palladium(ii)-catalyzed addition of arylboronic acids to nitriles. RSC Adv 2019; 9:29424-29428. [PMID: 35528398 PMCID: PMC9071805 DOI: 10.1039/c9ra07216k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 09/10/2019] [Indexed: 11/21/2022] Open
Abstract
A versatile synthesis of spirooxindolyl oxazol-2(5H)-ones and derivatives via palladium(ii)-catalyzed addition of arylboronic acids to nitriles is described.
Collapse
Affiliation(s)
- Hao Song
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Na Cheng
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Li-Qin She
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Yi Wu
- School of Pharmaceutical Science
- Jilin University
- Changchun 130012
- P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| |
Collapse
|
38
|
Uredi D, Motati DR, Watkins EB. A Unified Strategy for the Synthesis of β-Carbolines, γ-Carbolines, and Other Fused Azaheteroaromatics under Mild, Metal-Free Conditions. Org Lett 2018; 20:6336-6339. [PMID: 30272985 DOI: 10.1021/acs.orglett.8b02441] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient, unified approach for the synthesis of β-carbolines, γ-carbolines, and other fused azaheteroaromatics has been realized under metal-free conditions, from propargylic amines and (hetero)aromatic aldehydes. This unified strategy provides β- and γ-carbolines as well as a range of fused azaheteroaromatics with a broad substrate scope and excellent functional group compatibility. The formal synthesis of oxopropalines D and G has been achieved on gram scale (3a), in a one-pot reaction from commercially available materials (previous shortest reported route to 3a was 5 steps). NMR studies of the conversion of imine intermediate 3aa to β-carboline 3a were conducted and revealed that the reaction proceeded through an allene intermediate.
Collapse
Affiliation(s)
- Dilipkumar Uredi
- Department of Pharmaceutical Sciences, College of Pharmacy , Union University , Jackson , Tennessee 38305 , United States
| | - Damoder Reddy Motati
- Department of Pharmaceutical Sciences, College of Pharmacy , Union University , Jackson , Tennessee 38305 , United States
| | - E Blake Watkins
- Department of Pharmaceutical Sciences, College of Pharmacy , Union University , Jackson , Tennessee 38305 , United States
| |
Collapse
|