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Zheng JY, Luo Y, Ou TT, Zhang XJ, Lao YQ, Feng N, Peng JB, Zhang XZ, Yao X, Ma AJ. Acid-Promoted Cyclization of α-Azidobenzyl Ketones through C═N Bond Formation: Synthesis of 6-Substituted Quinoline Derivatives. Org Lett 2024; 26:586-590. [PMID: 38198745 DOI: 10.1021/acs.orglett.3c03697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
An acid-promoted cyclization of α-azidobenzyl ketones has been developed for the synthesis of 6-substituted quinoline derivatives. A variety of synthetically useful 6-OTf or -OMs quinoline derivatives were obtained in moderate to good yields. The reaction proceeds via C═N bond formation without organophosphine, providing convenient access to structurally interesting and synthetically important 6-substituted quinoline derivatives in moderate to good yields. A mechanistic perspective that is different from the traditional intramolecular Schmidt reaction has been proposed.
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Affiliation(s)
- Jing-Yun Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Ying Luo
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Ting-Ting Ou
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Xin-Jie Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Yong-Qiang Lao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Na Feng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Xiaojun Yao
- Centre for Artificial Intelligence Driven Drug Discovery, Faculty of Applied Sciences, Macao Polytechnic University, Macao 999078, China
| | - Ai-Jun Ma
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
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Malkova K, Bubyrev A, Kalinin S, Dar’in D. Facile access to 3-sulfonylquinolines via Knoevenagel condensation/aza-Wittig reaction cascade involving ortho-azidobenzaldehydes and β-ketosulfonamides and sulfones. Beilstein J Org Chem 2023; 19:800-807. [PMID: 37346493 PMCID: PMC10280061 DOI: 10.3762/bjoc.19.60] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 05/22/2023] [Indexed: 06/23/2023] Open
Abstract
Quinoline-based sulfonyl derivatives, and especially sulfonamides, are relevant and promising structures for drug design. We have developed a new convenient protocol for the synthesis of 3-sulfonyl-substituted quinolines (sulfonamides and sulfones). The approach is based on a Knoevenagel condensation/aza-Wittig reaction cascade involving o-azidobenzaldehydes and ketosulfonamides or ketosulfones as key building blocks. The protocol is appropriate for both ketosulfonyl reagents and α-sulfonyl-substituted alkyl acetates providing the target quinoline derivatives in good to excellent yields.
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Affiliation(s)
- Ksenia Malkova
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Andrey Bubyrev
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Stanislav Kalinin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar’in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
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3
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You S, Ruan M, Lu C, Liu L, Weng Y, Yang G, Wang S, Alhumade H, Lei A, Gao M. Paired electrolysis enabled annulation for the quinolyl-modification of bioactive molecules. Chem Sci 2022; 13:2310-2316. [PMID: 35310496 PMCID: PMC8864700 DOI: 10.1039/d1sc06757e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 01/26/2022] [Indexed: 12/15/2022] Open
Abstract
A paired electrolysis enabled cascade annulation that enables the efficient synthesis of highly functionalized quinoline-substituted bioactive molecules from readily available starting materials is reported. Using this methodology, two goals, namely, the direct synthesis of quinolines and the introduction of quinoline moieties to bioactive molecules, can be simultaneously achieved in one simple operation. The use of electroreduction for the activation of isatin, together with the further anodic oxidation of KI to catalytically result in a cascade annulation, highlight the unique possibilities associated with electrochemical activation methods. This transformation can tolerate a wide range of functional groups and can also be used as a functionalization tactic in pharmaceutical research as well as other areas.
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Affiliation(s)
- Shiqi You
- College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University Wuhan 430062 P. R. China
| | - Mengyao Ruan
- College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University Wuhan 430062 P. R. China
| | - Cuifen Lu
- College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University Wuhan 430062 P. R. China
| | - Li Liu
- College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University Wuhan 430062 P. R. China
| | - Yue Weng
- College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University Wuhan 430062 P. R. China
| | - Guichun Yang
- College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University Wuhan 430062 P. R. China
| | - Shengchun Wang
- College of Chemistry and Molecular Sciences and the Institute for Advanced Studies (IAS), Wuhan University Wuhan 430072 Hubei P. R. China
| | - Hesham Alhumade
- Department of Chemical and Materials Engineering, Faculty of Engineering, Center of Research Excellence in Renewable Energy and Power Systems, King Abdulaziz University Jeddah 21589 Saudi Arabia
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences and the Institute for Advanced Studies (IAS), Wuhan University Wuhan 430072 Hubei P. R. China
- Department of Chemical and Materials Engineering, Faculty of Engineering, Center of Research Excellence in Renewable Energy and Power Systems, King Abdulaziz University Jeddah 21589 Saudi Arabia
| | - Meng Gao
- College of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University Wuhan 430062 P. R. China
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Wang CC, Yang YT, Wang QL, Liu XH, Chen YJ. Regioselective and stereospecific synthesis of functionalized 3,4-dihydro-2 H-1,4-thiazines by catalyst-free [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines. Org Chem Front 2022. [DOI: 10.1039/d2qo00612j] [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
An efficient route to 3,4-dihydro-2H-1,4-thiazines was developed though [3 + 3] annulation of pyridinium 1,4-zwitterionic thiolates and aziridines under catalyst-free conditions.
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Affiliation(s)
- Chuan-Chuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Yan-Tao Yang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Qing-Long Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Xue-Hua Liu
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Ya-Jing Chen
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
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Wang CC, Wang XL, Zhang QL, Liu JT, Ma ZW, Liu Z, Chen YJ. Direct synthesis for N2-unprotected five-membered cyclic guanidines by regioselective [3+2] annulation of aziridines and cyanamides. Org Chem Front 2022. [DOI: 10.1039/d1qo01926k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and efficient [3+2] annulation of 2-substituted aziridines and N-tosyl cyanamides via domino regioselective ring-opening/5-exo-dig cyclization procedure has been developed, allowing the direct preparation for N2-unprotected five-membered cyclic guanidines...
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Monreal Corona R, Besalu E, Pla Quintana A, Poater A. A Predictive Chemistry DFT Study of the N 2O Functionalization for the Preparation of Triazolopyridine and Triazoloquinoline Scaffolds. Org Chem Front 2022. [DOI: 10.1039/d2qo00589a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The whole reaction mechanism of the functionalization of N2O for the synthesis of triazolopyridine and triazoloquinoline scaffolds has been unveiled by means of DFT calculations. The rate determining step of...
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Zhao H, Shen P, Sun D, Zhai H, Zhao Y. Transition-Metal-Free [3+2] Dehydration Cycloaddition of Donor-Acceptor Cyclopropanes With 2-Naphthols. Front Chem 2021; 9:711257. [PMID: 34336794 PMCID: PMC8322234 DOI: 10.3389/fchem.2021.711257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 06/04/2021] [Indexed: 11/21/2022] Open
Abstract
A Brønsted acid-catalyzed domino ring-opening cyclization transformation of donor-acceptor (D-A) cyclopropanes and 2-naphthols has been developed. This formal [3+2] cyclization reaction provided novel and efficient access to the naphthalene-fused cyclopentanes in the absence of any transition-metal catalysts or additives. This robust procedure was completed smoothly on a gram-scale to afford the corresponding product with comparable efficiency. Furthermore, the synthetic application of the prepared product has been demonstrated by its transformation into a variety of synthetically useful molecules.
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Affiliation(s)
- Hua Zhao
- Institute of Drug Discovery Technology, Ningbo University, Ningbo, China
| | - Peng Shen
- Institute of Drug Discovery Technology, Ningbo University, Ningbo, China
| | - Dongru Sun
- Institute of Drug Discovery Technology, Ningbo University, Ningbo, China
| | - Hongbin Zhai
- State Key Laboratory of Chemical Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen, China
| | - Yufen Zhao
- Institute of Drug Discovery Technology, Ningbo University, Ningbo, China
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