1
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Zou HN, Huang ML, Huang MY, Su YX, Zhang JW, Zhang XY, Zhu SF. Chiral gem-difluoroalkyl reagents: gem-difluoroalkyl propargylic borons and gem-difluoroalkyl α-allenols. Chem Sci 2023; 14:9186-9190. [PMID: 37655040 PMCID: PMC10466307 DOI: 10.1039/d3sc03266c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 08/04/2023] [Indexed: 09/02/2023] Open
Abstract
Chiral fluorinated reagents provide new opportunities for the discovery of drugs and functional materials because the introduction of a fluorinated group significantly alters a molecule's physicochemical properties. Chiral gem-difluoroalkyl fragments (R-CF2-C*) are key motifs in many drugs. However, the scarcity of synthetic methods and types of chiral gem-difluoroalkyl reagents limits the applications of these compounds. Herein, we report two types of chiral gem-difluoroalkyl reagents chiral gem-difluoroalkyl propargylic borons and gem-difluoroalkyl α-allenols and their synthesis by means of methods involving rhodium-catalyzed enantioselective B-H bond insertion reactions of carbenes and Lewis acid-promoted allenylation reactions. The mild, operationally simple method features a broad substrate scope and good functional group tolerance. These two types of reagents contain easily transformable boron and alkynyl or allenyl moieties and thus might facilitate rapid modular construction of chiral molecules containing chiral gem-difluoroalkyl fragments and might provide new opportunities for the discovery of chiral gem-difluoroalkyl drugs and other functional molecules.
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Affiliation(s)
- Hui-Na Zou
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Meng-Lin Huang
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Ming-Yao Huang
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Yu-Xuan Su
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Jing-Wei Zhang
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xin-Yu Zhang
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Shou-Fei Zhu
- Frontiers Science Center for New Organic Matter, State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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2
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Borra S, Kim HY, Oh K. One-Pot Tandem Nickel-Catalyzed α-Vinyl Aldol Reaction and Cycloaddition Approach to [1,2,3]Triazolo[1,5- a]quinolines. Org Lett 2023; 25:288-292. [PMID: 36580377 DOI: 10.1021/acs.orglett.2c04188] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A one-pot tandem approach to [1,2,3]triazolo[1,5-a]quinolines was developed from (E)-β-chlorovinyl ketones and 2-azidoaryl carbonyls using a sequence of α-vinyl aldol and azide-alkyne cycloaddition reactions. In particular, the intramolecular azide-alkyne cycloaddition of allenol intermediates was readily promoted by a synergistic action of NEt3 and nickel catalysts. Given that the [1,2,3]triazolo[1,5-a]quinolines are useful synthetic precursors to α-diazoimines through ring-chain isomerization process, the subsequent denitrogenative transformations should provide ready access to valuable heterocyclic compounds.
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Affiliation(s)
- Satheesh Borra
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Hun Young Kim
- Department of Global Innovative Drugs, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
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3
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Liu YQ, Li QZ, Kou XX, Zeng R, Qi T, Zhang X, Peng C, Han B, Li JL. Radical Acylalkylation of 1,3-Enynes To Access Allenic Ketones via N-Heterocyclic Carbene Organocatalysis. J Org Chem 2022; 87:5229-5241. [DOI: 10.1021/acs.joc.2c00037] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yan-Qing Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Qing-Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Xin-Xin Kou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Rong Zeng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Ting Qi
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Xiang Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Jun-Long Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610106, P. R. China
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4
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Zhang FH, Guo X, Zeng X, Wang Z. Catalytic Enantioconvergent Allenylation of Aldehydes with Propargyl Halides. Angew Chem Int Ed Engl 2022; 61:e202117114. [PMID: 35029018 DOI: 10.1002/anie.202117114] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Indexed: 11/09/2022]
Abstract
α-Allenol is a versatile synthon in organic synthesis. The catalytic asymmetric synthesis of α-allenols from readily available starting materials remains a prominent challenge, especially when simultaneous control over axial and central chirality is required. Herein, we describe the Cr-catalyzed enantioconvergent allenylation of aldehydes with racemic propargyl halides to rapidly access a wide range of chiral α-allenols with adjacent axial and central chiralities. This method features excellent regio-, diastereo- and enantioselectivity control with broad substrate scope, and provides facile access to all four stereoisomers when allied with a Mitsunobu reaction. Preliminary mechanistic studies support radical-based reaction pathways. The synthetic utility is demonstrated by the application in late-stage functionalization and the formal total synthesis of (+)-varitriol.
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Affiliation(s)
- Feng-Hua Zhang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
| | - Xiaochong Guo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
| | - Xianrong Zeng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
| | - Zhaobin Wang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou, 310024, Zhejiang Province, China.,Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, 310024, Zhejiang Province, China
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5
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Zhang F, Guo X, Zeng X, Wang Z. Catalytic Enantioconvergent Allenylation of Aldehydes with Propargyl Halides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117114] [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)
- Feng‐Hua Zhang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study Hangzhou 310024, Zhejiang Province China
| | - Xiaochong Guo
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study Hangzhou 310024, Zhejiang Province China
| | - Xianrong Zeng
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study Hangzhou 310024, Zhejiang Province China
| | - Zhaobin Wang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province School of Science Westlake University Hangzhou 310024, Zhejiang Province China
- Institute of Natural Sciences Westlake Institute for Advanced Study Hangzhou 310024, Zhejiang Province China
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6
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Wu G, Yao Y, Li G, Zhang X, Qian H, Ma S. Enantioselective Allenation of Terminal Alkynes Catalyzed by Copper Halides of Mixed Oxidation States and Its Application to the Total Synthesis of Scorodonin. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Guolin Wu
- Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Yuan Yao
- Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Gen Li
- Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Xue Zhang
- Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 P. R. China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 P. R. China
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7
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Wu G, Yao Y, Li G, Zhang X, Qian H, Ma S. EATA Reaction Catalyzed by Copper Halides of Mixed Oxidation States and Its Application to Total Synthesis of Scorodonin. Angew Chem Int Ed Engl 2021; 61:e202112427. [PMID: 34734475 DOI: 10.1002/anie.202112427] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Indexed: 11/10/2022]
Abstract
Naturally occurring conjugated allenynes are of general interest to the scientific community for their potent and various biological activities. The 1,5-H transfer of alka-1,4-diyn-3-yl amines would be one of the most straightforward yet challenging approach to this class of compounds since it may, in principle, form two regioisomeric products involving two different C-C triple bonds. Herein, a catalytic recipe of copper halides with mixed oxidation states, i.e., CuCl/CuBr 2 , has been identified to address the issues of the side reaction of conjugate addition and the selectivity of 1,5-H transfer of the key intermediate, alka-1,4-diyn-3-yl amines, in EATA (Enantioselective Allenation of Terminal Alkynes) reaction involving the conjugated 2-alkynals. This protocol could accommodate a wide range of functional groups providing a series of allenynes with a very high enantioselectivity (up to >99% ee). In addition, the enantioenriched allenynes can be readily transformed into various building blocks and applied to the highly enantioselective total synthesis of linear allenic natural product scorodonin for the first time. Mechanistic studies and DFT calculations elucidated the high regioselectivity for observed 1,5-H transfer within the intermediate of 1,4-diyn-3-yl amines. The calculated energy difference between two of the most stable transition states of 3.4 kcal/mol accounts for a selectivity of over 99:1, which is in perfect agreement with the experimental results.
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Affiliation(s)
- Guolin Wu
- Fudan University - Handan Campus: Fudan University, Department of Chemistry, CHINA
| | - Yuan Yao
- Fudan University - Handan Campus: Fudan University, Department of Chemistry, CHINA
| | - Gen Li
- Fudan University - Handan Campus: Fudan University, Department of Chemistry, CHINA
| | - Xue Zhang
- Fudan University - Handan Campus: Fudan University, Department of Chemistry, CHINA
| | - Hui Qian
- Fudan University - Handan Campus: Fudan University, Department of Chemistry, CHINA
| | - Shengming Ma
- SIOC/Zhejiang University, SKLOMC, 345 Lingling Lu, 200032, Shanghai, CHINA
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8
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Chen L, Lin C, Zhang S, Zhang X, Zhang J, Xing L, Guo Y, Feng J, Gao J, Du D. 1,4-Alkylcarbonylation of 1,3-Enynes to Access Tetra-Substituted Allenyl Ketones via an NHC-Catalyzed Radical Relay. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03861] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lei Chen
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Chen Lin
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Simiao Zhang
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xiaojin Zhang
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jianming Zhang
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Lianjie Xing
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yage Guo
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Feng
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jian Gao
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ding Du
- Department of Organic Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
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9
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Alonso JM, Almendros P. Deciphering the Chameleonic Chemistry of Allenols: Breaking the Taboo of a Onetime Esoteric Functionality. Chem Rev 2021; 121:4193-4252. [PMID: 33630581 PMCID: PMC8479864 DOI: 10.1021/acs.chemrev.0c00986] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Indexed: 12/19/2022]
Abstract
The allene functionality has participated in one of the most exciting voyages in organic chemistry, from chemical curiosities to a recurring building block in modern organic chemistry. In the last decades, a special kind of allene, namely, allenol, has emerged. Allenols, formed by an allene moiety and a hydroxyl functional group with diverse connectivity, have become common building blocks for the synthesis of a wide range of structures and frequent motif in naturally occurring systems. The synergistic effect of the allene and hydroxyl functional groups enables allenols to be considered as a unique and sole functionality exhibiting a special reactivity. This Review summarizes the most significant contributions to the chemistry of allenols that appeared during the past decade, with emphasis on their synthesis, reactivity, and occurrence in natural products.
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Affiliation(s)
- José M. Alonso
- Grupo
de Lactamas y Heterociclos Bioactivos, Departamento de Química
Orgánica, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Pedro Almendros
- Instituto
de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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10
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Wu P, Ma S. Halogen-Substituted Allenyl Ketones through Ring Opening of Nonstrained Cycloalkanols. Org Lett 2021; 23:2533-2537. [PMID: 33733787 DOI: 10.1021/acs.orglett.1c00452] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An efficient synthesis of halogen-substituted allenyl ketones via Ag-catalyzed oxidative ring opening of allenyl cyclic alcohols under mild reaction conditions has been achieved. The reaction features a wide substrate scope and excellent regioselectivity. The synthetic potential of the products has been demonstrated by their conversion to stereodefined alkenes and heterocyclic compounds.
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Affiliation(s)
- Penglin Wu
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
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11
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Yuan C, Tan H, Jiang X, Liu S, Jiang L, Cao Q, Xu X, Deng X, Pan G, Chen J, Cui H. Phosphine‐Catalyzed [3+2] Cycloaddition and Vinylation of Indole‐Derived α,α‐Dicyanoolefins with γ‐Substituted Allenoates. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900393] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Chang Yuan
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Hao Tan
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Xue‐Fei Jiang
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Si Liu
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Lu Jiang
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Qi‐Ying Cao
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Xing‐Jie Xu
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences & the Fifth Affiliated HospitalGuangzhou Medical University Guangzhou, Guangdong 511436 China
| | - Xiao‐Yan Deng
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Guan‐Nan Pan
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Jian‐Yang Chen
- Chongqing Key Laboratory of Environmental Materials and Remediation TechnologiesChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
| | - Hai‐Lei Cui
- Laboratory of Asymmetric SynthesisChongqing University of Arts and Sciences 319 Honghe Ave. Yongchuan, Chongqing 402160 China
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12
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Li S, Wu XX, Chen S. Base-promoted direct synthesis of functionalized N-arylindoles via the cascade reactions of allenic ketones with indoles. Org Biomol Chem 2019; 17:789-793. [PMID: 30627719 DOI: 10.1039/c8ob02921k] [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
A convenient Cs2CO3-promoted cascade benzannulation reaction of allenic ketones with indoles was achieved for the synthesis of functionalized N-arylindole derivatives under transition-metal-free conditions. A series of readily available starting materials can undergo the process successfully. It represents a practical method for the construction of N-arylindole scaffolds with high atom economy.
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Affiliation(s)
- Shengxiao Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China.
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13
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Feng T, He Y, Zhang X, Fan X. Synthesis of Functionalized Cyclobutane‐Fused Naphthalene Derivatives via Cascade Reactions of Allenynes with
tert
‐Butyl Nitrite. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801439] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tian Feng
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of EnvironmentHenan Normal University, Xinxiang Henan 453007 People's Republic of China
| | - Yan He
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of EnvironmentHenan Normal University, Xinxiang Henan 453007 People's Republic of China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of EnvironmentHenan Normal University, Xinxiang Henan 453007 People's Republic of China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of EnvironmentHenan Normal University, Xinxiang Henan 453007 People's Republic of China
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14
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Wang Q, Zhang T, Fan Y, Fan X. Synthesis of functionalized cyclopentenes through allenic ketone-based multicomponent reactions. Org Biomol Chem 2018; 16:8854-8858. [PMID: 30411769 DOI: 10.1039/c8ob02259c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel and efficient synthesis of diversely functionalized cyclopentene derivatives through the multicomponent reactions of 1,2-allenic ketones with 4-chloroacetoacetate and malononitrile/cyanoacetate under mild and metal-free conditions is presented. Mechanistically, the formation of title compounds involves a cascade process including nucleophilic substitution, Michael addition and intramolecular aldol type reaction. Interestingly, when 1-phenyl allenic ketones bearing electron-donating groups on the phenyl ring were reacted with 4-chloroacetoacetate and cyanoacetate, methylenecyclo-pentanes, the regioisomer of cyclopentenes, were formed with good selectivity and high efficiency.
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Affiliation(s)
- Qiang Wang
- College of Chemistry and Chemical Engineering, Henan Key Laboratory of Coal Green Conversion, Henan Polytechnic University, Jiaozuo, Henan 454000, P. R. China.
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15
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Xie MS, Guo Z, Qu GR, Guo HM. Regiodivergent Synthesis of Pyrazolines with a Quaternary Carbon Center via Cycloaddition of Diazoesters to N-Purine-Substituted Allenes. Org Lett 2018; 20:5010-5014. [PMID: 30067368 DOI: 10.1021/acs.orglett.8b02161] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Diversity-oriented synthesis of pyrazoline derivatives that contain a quaternary carbon center has been achieved via the 1,3-dipolar cycloaddition between N-purine-substituted allenes and α-alkyl/aryl diazoesters. Using Pd2(dba)3 as a catalyst, only 1-pyrazoline derivatives are produced in a regioselective manner. When DPPB is used as a catalyst, diverse 1-pyrazolines and 2-pyrazolines are obtained in moderate to good total yields.
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Affiliation(s)
- Ming-Sheng Xie
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Zhen Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
| | - Hai-Ming Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , China
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16
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Facile and regioselective synthesis of functionalized benzenes via cascade reactions of 1,2-allenic ketones with 4-sulfonyl crotonates. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Wang HX, Guan FJ, Xie MS, Qu GR, Guo HM. Construction of All-Carbon Quaternary Stereocenters via
Asymmetric Cyclopropanations: Synthesis of Chiral Carbocyclic Pyrimidine Nucleosides. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800222] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Hai-Xia Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang, Henan 453007 People's Republic of China
| | - Fang-Juan Guan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang, Henan 453007 People's Republic of China
| | - Ming-Sheng Xie
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang, Henan 453007 People's Republic of China
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang, Henan 453007 People's Republic of China
| | - Hai-Ming Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang, Henan 453007 People's Republic of China
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18
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Feng T, Tian M, Zhang X, Fan X. Tunable Synthesis of Functionalized Cyclohexa-1,3-dienes and 2-Aminobenzophenones/Benzoate from the Cascade Reactions of Allenic Ketones/Allenoate with Amines and Enones. J Org Chem 2018; 83:5313-5322. [DOI: 10.1021/acs.joc.8b00473] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tian Feng
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Miaomiao Tian
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
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19
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Wang Q, Shi X, Zhang X, Fan X. A convenient synthesis of 1-aryl-1H-1,2,3-triazoles from aliphatic substrates. Org Biomol Chem 2017; 15:8529-8534. [PMID: 28956584 DOI: 10.1039/c7ob02035j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A convenient synthesis of 1-aryl-1H-1,2,3-triazoles through the one pot cascade reactions of alkynes with aliphatic azides and allenic ketones is presented. Mechanically, the formation of the title compounds involves a copper-catalyzed cycloaddition of alkyne with 4-azido-3-oxobutanoate to give 3-oxo-4-(1H-1,2,3-triazol-1-yl)butanoate as a key intermediate followed by its [3 + 3] annulation with allenic ketone through Michael addition and intramolecular condensation. A comparison study showed that using aliphatic azide as the substrate is superior to aromatic azide in terms of efficiency and selectivity. Furthermore, the 1-aryl-1H-1,2,3-triazoles bearing a 2'-bromophenyl unit attached on the 2-position of the in situ formed aryl ring obtained herein could be readily transformed into the biologically and pharmaceutically valuable tretracyclic triazolophenanthridines with good yields via a Pd-catalyzed C-H arylation.
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Affiliation(s)
- Qiang Wang
- School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, P. R. China.
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20
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Zhu T, Ma S. 3,4-Alkadienyl ketones via the palladium-catalyzed decarboxylative allenylation of 3-oxocarboxylic acids. Chem Commun (Camb) 2017; 53:6037-6040. [DOI: 10.1039/c7cc02050c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3,4-Allenyl aryl ketones were prepared via a palladium-catalyzed decarboxylative allenylation of benzyl carbonates or tert-butyl carbonates of 2,3-allenols with 3-oxocarboxylic acids.
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Affiliation(s)
- Tonghao Zhu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Shengming Ma
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
- State Key Laboratory of Organometallic Chemistry
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21
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Shi X, He Y, Zhang X, Fan X. Selective syntheses of diversely substituted 2-hydroxy-4′-hydroxybenzophenones through [4 + 2] or [3 + 3] annulation of penta-3,4-dien-2-ones with 3-formylchromones. Org Chem Front 2017. [DOI: 10.1039/c7qo00366h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A selective synthesis of 2-hydroxy-4′-hydroxybenzophenones or their 3′-acylated counterparts via the cascade reactions of 3-formylchromones with diversely substituted penta-3,4-dien-2-ones is presented.
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Affiliation(s)
- Xiaonan Shi
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Yan He
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xuesen Fan
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
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