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Zhang J, He Z. Lewis Base-Catalyzed Intramolecular Vinylogous Aldol Reaction and Chemoselective Syntheses of 3-Hydroxy-2,3-Disubstituted Dihydrobenzofurans and Indolines. J Org Chem 2023; 88:13102-13114. [PMID: 37672638 DOI: 10.1021/acs.joc.3c01313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
A Lewis base-catalyzed intramolecular vinylogous aldol reaction of o-(allyloxy)phenyl ketoesters or o-(allylamino)phenyl ketoesters has been developed. This reaction provides ready access to 3-hydroxy-2,3-disubstituted dihydrobenzofurans and indolines in high yields with excellent chemoselectivity and diastereoselectivity. An acid-promoted dehydration of such products further extends the utility of the reaction to the synthesis of 2-alkenyl benzofurans and indoles.
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Affiliation(s)
- Jiayong Zhang
- The State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Institute of Marine Biomedicine/Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Zhengjie He
- The State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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2
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Liu Z, Wang Z, Liao H, Li Z. One-Pot Synthesis of 1,2,3-Triarylindoles through Cascade Reactions Using Calcium Carbide, Iodoarenes, and Aromatic Amines. Org Lett 2023; 25:5812-5816. [PMID: 37523462 DOI: 10.1021/acs.orglett.3c02069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
An efficient method for the construction of 1,2,3-triarylindoles through one-pot multicomponent reactions using calcium carbide, 3 mol of iodoarenes, and aromatic amines as starting materials was described. A series of target products were obtained by the simultaneous formation of five bonds in one step. The main advantages for this protocol are the use of a convenient alkyne source, wide scope of substrates, and simple workup procedure. The method can be extended to the gram scale.
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Affiliation(s)
- Zhenrong Liu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Zhiqiang Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Haiyan Liao
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Zheng Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
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3
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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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4
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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Zheng X, Liu B, Yang F, Hu Q, Yao L, Hu Y. Access to Benzoxazepines and Fully Substituted Indoles via HDDA Coupling. Org Lett 2020; 22:956-959. [PMID: 31989829 DOI: 10.1021/acs.orglett.9b04499] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The HDDA-derived benzyne intermediate was captured by oxazolines based on the addition reaction of benzyne to the C═N double bond. Benzoxazepine derivatives, fused benzoxazepine derivatives, and fully substituted indoles are synthesized in one step. The reaction does not require any catalyst or additives. Possible reaction mechanisms are presented.
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Affiliation(s)
- Xiaojie Zheng
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, State Laboratory Cultivation Base, College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Baohua Liu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, State Laboratory Cultivation Base, College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Feihu Yang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, State Laboratory Cultivation Base, College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Qiong Hu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, State Laboratory Cultivation Base, College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Liangliang Yao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, State Laboratory Cultivation Base, College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
| | - Yimin Hu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, State Laboratory Cultivation Base, College of Chemistry and Materials Science , Anhui Normal University , Wuhu , Anhui 241002 , China
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7
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Sharma A, Gogoi P. Synthesis of 6-substituted indoloquinazolinones from arynes and 2-acyl-4-quinazolinones: a transition-metal free C–N and C–C bond formation strategy. NEW J CHEM 2020. [DOI: 10.1039/d0nj04395h] [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
A versatile transition-metal free synthetic strategy has been developed for the direct synthesis of 6-substituted indoloquinazolinones from 2-acyl-4-quinazolinones and aryne precursors. This cascade strategy proceeds via successive C–N and C–C bond formation in a single reaction vessel.
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Affiliation(s)
- Abhilash Sharma
- Applied Organic Chemistry Group
- Chemical Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
| | - Pranjal Gogoi
- Applied Organic Chemistry Group
- Chemical Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat 785006
- India
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8
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Shan XH, Wang MM, Tie L, Qu JP, Kang YB. CuSO 4-Catalyzed Tandem C(sp 3)-H Insertion Cyclization of Toluenes with Isonitriles to Form Indoles. Org Lett 2019; 22:357-360. [PMID: 31887043 DOI: 10.1021/acs.orglett.9b03751] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A CuSO4-catalyzed tandem benzylic C-H insertion cyclization of toluene derivatives and isonitriles is described. The naturally abundant salt CuSO4 serves as a low-cost ligand-free redox catalyst. This reaction provides a practical modular synthesis of N-aryl indoles from isonitriles.
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Affiliation(s)
- Xiang-Huan Shan
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Mei-Mei Wang
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Lin Tie
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Jian-Ping Qu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , China
| | - Yan-Biao Kang
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
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9
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Wang W, Wan H, Du G, Dai B, He L. Synthesis of Benzo[b]fluoranthenes and Spiroacridines from Fluorene-Derived Alkenes and N-Arylimines via a Tandem Reaction with Benzynes. Org Lett 2019; 21:3496-3500. [DOI: 10.1021/acs.orglett.9b00659] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Weihua Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Hongwei Wan
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Guangfen Du
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Bin Dai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Lin He
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
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10
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Li Z, Wang W, Jian H, Li W, Dai B, He L. Synthesis of 9-phenol-substituted xanthenes by cascade O-insertion/1,6-conjugate addition of benzyne with ortho-hydroxyphenyl substituted para-quinone methides. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.04.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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11
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Wei T, Zeng Y, He W, Geng L, Hong L. A facile transformation of alkynes into α-amino ketones by an N-bromosuccinimide-mediated one-pot strategy. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.03.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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12
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Bugaenko DI, Karchava AV, Yurovskaya MA. Synthesis of indoles: recent advances. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4844] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Jian H, Wang Q, Wang WH, Li ZJ, Gu CZ, Dai B, He L. Divergent synthesis of functionalized thioethers via multicomponent reaction of benzynes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Bugaenko DI, Karchava AV, Yurovskaya MA. Arynes, diaryliodonium salts and azine N-oxides in transition metal-free electrophilic N-arylation. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4781] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Facial synthesis of trifluoromethylated xanthenes via tandem reaction of arynes and 2-trifluoroacetylphenols. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Reaction of aryne with aza-Morita–Baylis–Hillman adducts: Synthesis of 4-quinolones and N -arylation products. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2016.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Jian H, Liu K, Wang WH, Li ZJ, Dai B, He L. Construction of 9-functionalized xanthenes via Diels-Alder reaction of stable ortho-quinone methides and arynes. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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Thangaraj M, Bhojgude SS, Jain S, Gonnade RG, Biju AT. Selective Synthesis of N-Unsubstituted and N-Arylindoles by the Reaction of Arynes with Azirines. J Org Chem 2016; 81:8604-11. [DOI: 10.1021/acs.joc.6b01472] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | | | | | - Akkattu T. Biju
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
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19
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Liu K, Liu LL, Gu CZ, Dai B, He L. Aryne-induced dearomatized phosphonylation of electron-deficient azaarenes. RSC Adv 2016. [DOI: 10.1039/c6ra02128j] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aryne-induced dearomatic phosphonylation of electron-deficient azaarenes.
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Affiliation(s)
- Kai Liu
- School of Chemistry and Chemical Engineering
- Shihezi University
- P. R. China
| | - Li-Li Liu
- School of Chemistry and Chemical Engineering
- Shihezi University
- P. R. China
| | - Cheng-Zhi Gu
- School of Chemistry and Chemical Engineering
- Shihezi University
- P. R. China
| | - Bin Dai
- School of Chemistry and Chemical Engineering
- Shihezi University
- P. R. China
| | - Lin He
- School of Chemistry and Chemical Engineering
- Shihezi University
- P. R. China
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20
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Li M, Zhang L, Zhao B, Liang F. One-pot, two-step conversion of alkynes to α-amino (α,α-diamino) ketones with a DMF-activated N-bromoimide strategy. RSC Adv 2016. [DOI: 10.1039/c6ra12770c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple, one-pot, two-step cascade reaction for the synthesis of α-amino ketones has been developed.
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Affiliation(s)
- Mengru Li
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Luyan Zhang
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Baozhong Zhao
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Fushun Liang
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
- College of Chemistry
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21
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Pian JX, He L, Du GF, Guo H, Dai B. Diastereoselective Synthesis of N-Aryl Tetrahydroquinolines and N-Aryl Indolines by the Tandem Reaction of Arynes. J Org Chem 2014; 79:5820-6. [DOI: 10.1021/jo5003399] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ji-Xin Pian
- School of Chemistry and Chemical
Engineering, Shihezi University, Xinjiang, Uygur Autonomous
Region 832000, China
| | - Lin He
- School of Chemistry and Chemical
Engineering, Shihezi University, Xinjiang, Uygur Autonomous
Region 832000, China
| | - Guang-Fen Du
- School of Chemistry and Chemical
Engineering, Shihezi University, Xinjiang, Uygur Autonomous
Region 832000, China
| | - Hao Guo
- School of Chemistry and Chemical
Engineering, Shihezi University, Xinjiang, Uygur Autonomous
Region 832000, China
| | - Bin Dai
- School of Chemistry and Chemical
Engineering, Shihezi University, Xinjiang, Uygur Autonomous
Region 832000, China
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