1
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Zhang X, Liu C, Wei W, Zhang Z, Liang T. Iodine-dependent oxidative regioselective aminochalcogenation of indolines. Chem Commun (Camb) 2024; 60:1152-1155. [PMID: 38189976 DOI: 10.1039/d3cc05999e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
A directing-group-free strategy for oxidative regioselective aminochalcogenation of indolines with amines and dichalconides is presented. This strategy combines tandem coupling sequences and oxidative dehydrogenation methods in a multi-component reaction, enabling the fast construction of a series of C2,3- or C2,5-aminochalcogenated indole derivatives. Moreover, the application of this synthetic approach is demonstrated through the late-stage modification of pharmaceuticals and the derivatization of the products, highlighting its potential and significance.
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Affiliation(s)
- Xiaoxiang Zhang
- Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, People's Republic of China.
| | - Chenrui Liu
- Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, People's Republic of China.
| | - Wanxing Wei
- Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, People's Republic of China.
| | - Zhuan Zhang
- Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, People's Republic of China.
| | - Taoyuan Liang
- Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, People's Republic of China.
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2
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He ZL, Tian W, Wang G. Oxidative (3+3) Cycloaddition/Ring-Opening Reactions of Simple Urea Derivatives and N, N'-Cyclic Azomethine Imines to Construct 1,2,3,5-Tetrazine-4(1 H)-one Derivatives. J Org Chem 2023. [PMID: 37257156 DOI: 10.1021/acs.joc.3c00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A novel oxidative (3 + 3) cycloaddition/ring-opening reaction of N,N'-cyclic azomethine imines with the in situ generated diaza-oxylallyl cations from simple urea derivatives in the presence of base and PhI(OAc)2 has been developed. This transformation performs well over a broad substrate scope, which provides facile and rapid access to 1,2,3,5-tetrazine-4(1H)-one derivatives in good yields.
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Affiliation(s)
- Zhao-Lin He
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Wen Tian
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Gang Wang
- School of Chemistry and Environmental Engineering, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430205, P. R. China
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3
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Luo X, Xu MM, Xu XP, Ji SJ. NBS-induced intramolecular annulation reactions for the divergent synthesis of fused- and spirocyclic indolines. Chem Commun (Camb) 2023; 59:6576-6579. [PMID: 37183546 DOI: 10.1039/d3cc01920a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
An NBS-induced intramolecular annulation of 3-(1H-indol-3-yl)-N-alkoxypropanamide is described. The reactions proceed well and quickly under mild conditions with the help of a base. It was found that C2-substituents on the indole ring in 3-(1H-indol-3-yl)-N-alkoxypropanamide have a great influence upon the reaction. By using C2-methyl- and C2-phenyl-3-(1H-indol-3-yl)-N-alkoxypropanamide as templates, practical protocols for the divergent synthesis of fused- and spirocyclic indoline compounds were studied and established.
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Affiliation(s)
- Xian Luo
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China.
| | - Meng-Meng Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China.
| | - Xiao-Ping Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China.
- Innovation Center for Chemical Science, Soochow University, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China.
- Suzhou Baolidi Functional Materials Research Institute, Suzhou 215144, People's Republic of China
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4
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Xu Y, Fan H, Yang F, Xu S, Zhao X, Liao X, Zhang X. PPh 3-Mediated Cascade Reaction of 2-Alkynylnitrobenzenes and Thioureas for the Construction of Imidazo[4,5- b]indole-2-thiones. J Org Chem 2023. [PMID: 36800292 DOI: 10.1021/acs.joc.2c02434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A simple method for the preparation of imidazo[4,5-b]indole-2-thiones from 2-alkynylnitrobenzenes and thioureas is described. In the reaction, a Wittig-like process was triggered by PPh3 and followed by a cyclization step. The products were afforded in yields of 70-98% under mild conditions. Additionally, the 2-alkynylnitrobenzenes were stable and could be prepared via a simple coupling step.
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Affiliation(s)
- Yao Xu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Hui Fan
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Fan Yang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Shijie Xu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Xuechun Zhao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Xiaoming Liao
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Xiaoxiang Zhang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
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5
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Matsumoto N, Hwang T, Romo D. Total Synthesis of (±)- N-Methyldibromoisophakellin and N-Methylugibohlin via Net [3+2] Cycloguanidinylations Employing 2-Amido-1,3-Diamino-Allyl Cations. Tetrahedron Lett 2023; 115:154304. [PMID: 36777739 PMCID: PMC9914522 DOI: 10.1016/j.tetlet.2022.154304] [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] [Indexed: 12/14/2022]
Abstract
A concise total synthesis of (±)-N-methyldibromoisophakellin, a member of the monomeric pyrrole-aminoimidazole alkaloid family isolated from the marine sponge Stylissa carbica, was achieved via a net [3+2] cycloaddition to install the cyclic guanidine. This ring annulation employs a 2-amido-1,3-aminoallyl cation obtained under oxidative conditions from variously N-substituted guanidines which in one instance led to isolation of a tetracycle bearing a carbinolamine center through subsequent benzylic oxidation. Finally, the serendipitous formation of a unique, related alkenyl guanidine, N-methylugibohlin, achieved via ring opening of cyclic guanidine under acidic conditions suggests that ugibohlin may be an artifact of isolation.
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Affiliation(s)
- Nobuyuki Matsumoto
- Department of Chemistry & Biochemistry, Bayor University, 101 Bagby Ave., Waco, Texas, USA 76798-7348
| | - Taehwan Hwang
- Department of Chemistry & Biochemistry, Bayor University, 101 Bagby Ave., Waco, Texas, USA 76798-7348
| | - Daniel Romo
- Department of Chemistry & Biochemistry, Bayor University, 101 Bagby Ave., Waco, Texas, USA 76798-7348
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6
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Chen X, Yang N, Zeng W, Wang L, Li P, Li H. Metal-free dearomative [5+2]/[2+2] cycloaddition of 1 H-indoles with ortho-(trimethylsilyl)aryl triflates. Chem Commun (Camb) 2021; 57:7047-7050. [PMID: 34179907 DOI: 10.1039/d1cc02550c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Herein, we report a mild dearomative [5+2]/[2+2] cycloaddition of 1H-indoles with ortho-(trimethylsilyl)aryl triflates. The unique [5+2] cycloaddition enables the synthesis of a series of dibenzo[b,e]azepine derivatives in moderate to good yields. Increasing the steric hindrance at the C2-position of 1H-indoles leads to the [2+2] cycloaddition. Mechanistic investigations support that the reaction of 1H-indoles with arynes undergoes a [2+2] cycloaddition step, followed by a ring expansion to the [5+2] cycloaddition product.
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Affiliation(s)
- Xinyu Chen
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Na Yang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Wen Zeng
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Lei Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China. and Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 200032, P. R. China
| | - Pinhua Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Hongji Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China. and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 200032, P. R. China
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7
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Rao Kovvuri VR, Xue H, Romo D. Generation and Reactivity of 2-Amido-1,3-diaminoallyl Cations: Cyclic Guanidine Annulations via Net (3 + 2) and (4 + 3) Cycloadditions. Org Lett 2020; 22:1407-1413. [PMID: 32009413 DOI: 10.1021/acs.orglett.0c00019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Toward a method for direct conversion of alkenes to cyclic guanidines, we report that 1,3-dipolar cycloadditions of 2-amido-1,3-diamino allylic cations with alkenes provide a new method for direct cyclic guanidine annulation. Generated under oxidative conditions, the 2-amido-1,3-diaminoallyl cations react as 1,3-dipoles providing rapid access to 2-amino imidazolines through net (3 + 2) cycloadditions. The utility is demonstrated through a concise synthesis of the oroidin alkaloid, phakellin. The described 1,3-dipole also participates in net (4 + 3) cycloadditions with dienes.
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Affiliation(s)
- V Raghavendra Rao Kovvuri
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , Texas 76798 , United States
| | - Haoran Xue
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , Texas 76798 , United States
| | - Daniel Romo
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , Texas 76798 , United States
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8
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Li P, Zhu B, Xu Y, Zhou Z, Hu G, Yang F, Xu S, Zhang X. Palladium-catalyzed one-pot cycloaddition reactions of thioureas with 3H-indol-3-ones generated in situ from 2-alkynyl arylazides: rapid and efficient access to imidazoloindolines. Org Chem Front 2020. [DOI: 10.1039/d0qo00799d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An efficient palladium-catalyzed one-pot synthesis of imidazoloindolines from 2-alkynyl arylazides under mild reaction conditions has been described.
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Affiliation(s)
- Ping Li
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Boyu Zhu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Yao Xu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Zhiqiang Zhou
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Guiwen Hu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Fan Yang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Shijie Xu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Xiaoxiang Zhang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
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9
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Eckert KE, Lepore AJ, Ashfeld BL. A Phosphorus(III)‐Mediated (4+1)‐Cycloaddition of 1,2‐Dicarbonyls and Aza‐
o
‐Quinone Methides to Access 2,3‐Dihydroindoles. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900192] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kaitlyn E. Eckert
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556 United States
| | - Antonio J. Lepore
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556 United States
| | - Brandon L. Ashfeld
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556 United States
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10
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El Bouakher A, Martel A, Comesse S. α-Halogenoacetamides: versatile and efficient tools for the synthesis of complex aza-heterocycles. Org Biomol Chem 2019; 17:8467-8485. [DOI: 10.1039/c9ob01683j] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review presents the use of α-alkyl- and α-alkoxy-halogenoacetamides as powerful partners for domino and 1,3-dipolar cycloaddition reactions resulting in a ring closure.
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Affiliation(s)
| | - Arnaud Martel
- IMMM
- UMR 6283 CNRS
- Le Mans Université
- 72085 Le Mans
- France
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11
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Zhao HW, Guo JM, Wang LR, Ding WQ, Tang Z, Song XQ, Wu HH, Fan XZ, Bi XF. Diastereoselective formal [3 + 3] cycloaddition of isatin-based α-(trifluoromethyl)imines with N,N′-dialkyloxyureas. Org Chem Front 2019. [DOI: 10.1039/c9qo01181a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diastereoselective formal [3 + 3] cycloaddition of isatin-based α-(trifluoromethyl)imines with N,N′-dialkyloxyureas furnished trans-configured novel spiro-1,3,5-triazinan-2-ones in reasonable chemical yields.
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Affiliation(s)
- Hong-Wu Zhao
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Jia-Ming Guo
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Li-Ru Wang
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Wan-Qiu Ding
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Zhe Tang
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Xiu-Qing Song
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Hui-Hui Wu
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Xiao-Zu Fan
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
| | - Xiao-Fan Bi
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science and Bio-engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
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12
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Li L, Luo S. Electrochemical Generation of Diaza-oxyallyl Cation for Cycloaddition in an All-Green Electrolytic System. Org Lett 2018; 20:1324-1327. [DOI: 10.1021/acs.orglett.8b00057] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Longji Li
- Key
Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sanzhong Luo
- Key
Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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13
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Xuan J, Cao X, Cheng X. Advances in heterocycle synthesis via [3+m]-cycloaddition reactions involving an azaoxyallyl cation as the key intermediate. Chem Commun (Camb) 2018; 54:5154-5163. [DOI: 10.1039/c8cc00787j] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This feature article highlights recent advances in heterocycle synthesis via [3+m]-cycloaddition reactions involving an azaoxyallyl cation as the key intermediate.
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Affiliation(s)
- Jun Xuan
- Department of Chemistry
- Anhui University
- Hefei
- China
| | - Xia Cao
- Department of Chemistry
- Anhui University
- Hefei
- China
| | - Xiao Cheng
- Department of Chemistry
- Anhui University
- Hefei
- China
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14
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Giustiniano M, Pelliccia S, Sangaletti L, Meneghetti F, Amato J, Novellino E, Tron GC. Amphoteric 2-(sulfonylamino)benzaldehydes, secondary amines and isocyanides in the multicomponent synthesis of elusive N -alkyl-2,3-diaminoindoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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15
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Jia Q, Li D, Lang M, Zhang K, Wang J. 4-Dimethylaminopyridine-Mediated [3+3] Cycloaddition of Aza-oxyallyl Cations and Nitrones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700415] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Qianfa Jia
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen 529020 People's Republic of China
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 People's Republic of China
| | - Dongli Li
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen 529020 People's Republic of China
- International Healthcare Innovation Institute (Jiangmen); Jiangmen 529020 People's Republic of China
| | - Ming Lang
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 People's Republic of China
| | - Kun Zhang
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen 529020 People's Republic of China
| | - Jian Wang
- School of Pharmaceutical Sciences; Tsinghua University; Beijing 100084 People's Republic of China
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16
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Abe T, Suzuki T, Anada M, Matsunaga S, Yamada K. 2-Hydroxyindoline-3-triethylammonium Bromide: A Reagent for Formal C3-Electrophilic Reactions of Indoles. Org Lett 2017; 19:4275-4278. [DOI: 10.1021/acs.orglett.7b01940] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Takumi Abe
- Faculty
of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 0610293, Japan
| | - Takuro Suzuki
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 0600812, Japan
| | - Masahiro Anada
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 0600812, Japan
| | - Shigeki Matsunaga
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Sapporo 0600812, Japan
| | - Koji Yamada
- Faculty
of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-tobetsu, Hokkaido 0610293, Japan
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17
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Schlegel M, Schneider C. Lewis Acid-Catalyzed Nucleophilic Addition of Indoles to in Situ-Generated 2-Amidoallyl Cations. J Org Chem 2017; 82:5986-5992. [DOI: 10.1021/acs.joc.7b00791] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Marcel Schlegel
- Institut für Organische
Chemie, University of Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Christoph Schneider
- Institut für Organische
Chemie, University of Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
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18
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Zhang K, Xu X, Zheng J, Yao H, Huang Y, Lin A. [3 + 3] Cycloaddition of in Situ Formed Azaoxyallyl Cations with 2-Alkenylindoles: An Approach to Tetrahydro-β-carbolinones. Org Lett 2017; 19:2596-2599. [DOI: 10.1021/acs.orglett.7b00914] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kaifan Zhang
- State
Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal
Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xiaoying Xu
- State
Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal
Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jiuan Zheng
- State
Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal
Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Hequan Yao
- State
Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal
Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yue Huang
- Department
of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Aijun Lin
- State
Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal
Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
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19
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Harnessing the catalytic behaviour of 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP): An expeditious synthesis of thioesters. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Abstract
A three-step synthesis of masked 2,3-diaminoindole 1 from 2-iodo-3-nitro-1-(phenylsulfonyl)indole (2) has been developed. Treatment of 1 with trifluoroacetic acid generates the unstable 2,3-diamino-1-(phenylsulfonyl)indole (3), which can be trapped with α-dicarbonyl compounds to afford 5H-pyrazino[2,3-b]indoles 7-10.
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Affiliation(s)
- Philip Z Mannes
- Department of Chemistry, Dartmouth College , Hanover, New Hampshire 03755-3564, United States
| | - Evans O Onyango
- Department of Chemistry, Dartmouth College , Hanover, New Hampshire 03755-3564, United States
| | - Gordon W Gribble
- Department of Chemistry, Dartmouth College , Hanover, New Hampshire 03755-3564, United States
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21
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Acharya A, Montes K, Jeffrey CS. Access to 4-Oxazolidinones: A (3 + 2) Cycloaddition Approach. Org Lett 2016; 18:6082-6085. [DOI: 10.1021/acs.orglett.6b03069] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arjun Acharya
- Department of Chemistry, University of Nevada, Reno, Nevada 89557-0216, United States
| | - Karissa Montes
- Department of Chemistry, University of Nevada, Reno, Nevada 89557-0216, United States
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22
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Marques AS, Coeffard V, Chataigner I, Vincent G, Moreau X. Iron-Mediated Domino Interrupted Iso-Nazarov/Dearomative (3 + 2)-Cycloaddition of Electrophilic Indoles. Org Lett 2016; 18:5296-5299. [DOI: 10.1021/acs.orglett.6b02613] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anne-Sophie Marques
- Institut
Lavoisier Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, Université Paris Saclay, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Vincent Coeffard
- Institut
Lavoisier Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, Université Paris Saclay, 45 Avenue des États-Unis, 78035 Versailles cedex, France
| | - Isabelle Chataigner
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), Equipe Méthodologie, Synthèse et Molécules Thérapeutiques (MS&MT), Université Paris Sud, CNRS, Université Paris Saclay, Bat. 410, 91405 Orsay, France
| | - Xavier Moreau
- Institut
Lavoisier Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, Université Paris Saclay, 45 Avenue des États-Unis, 78035 Versailles cedex, France
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23
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Villemson EV, Budynina EM, Ivanova OA, Skvortsov DA, Trushkov IV, Melnikov MY. Concise approach to pyrrolizino[1,2-b]indoles from indole-derived donor–acceptor cyclopropanes. RSC Adv 2016. [DOI: 10.1039/c6ra11233a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A direct approach to previously unexplored pyrrolizidino[1,2-b]indole system from indole-derived donor–acceptor cyclopropanes based on a sequence of three synthetic steps was developed.
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Affiliation(s)
- Elena V. Villemson
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Ekaterina M. Budynina
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
| | - Olga A. Ivanova
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Dmitriy A. Skvortsov
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Igor V. Trushkov
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
- Laboratory of Chemical Synthesis
| | - Mikhail Ya. Melnikov
- Department of Chemistry
- M. V. Lomonosov Moscow State University
- Moscow
- Russian Federation 119991
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24
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Liu J, Wang L, Wang X, Xu L, Hao Z, Xiao J. Fluorinated alcohol-mediated [4 + 3] cycloaddition reaction of indolyl alcohols with cyclopentadiene. Org Biomol Chem 2016; 14:11510-11517. [DOI: 10.1039/c6ob01953f] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes a catalyst- and additive-free, [4 + 3] cycloaddition reaction of 3-indolylmethanols with cyclopentadiene in HFIP, producing cyclohepta[b]indole derivatives in high yields and with wide substrate scope.
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Affiliation(s)
- Jian Liu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Xiaoxiao Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Zhihui Hao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
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