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1
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Hajinasiri R. Allenoates in organic synthesis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Vaishanv NK, Chandrasekharan SP, Zaheer MK, Kant R, Mohanan K. Substrate-controlled, PBu 3-catalyzed annulation of phenacylmalononitriles with allenoates enables tunable access to cyclopentenes. Chem Commun (Camb) 2020; 56:11054-11057. [PMID: 32812573 DOI: 10.1039/d0cc04688d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Divergence in the PBu3-catalyzed [3+2] annulation of phenacylmalononitriles with allenoates, controlled by the γ-substitution on allenoates, offers a tunable synthesis of multifunctionalized cyclopentene carboxamides and cyclopentenols. An unprecedented formation of cyclopentene carboxamide was observed when allenic esters bearing a substitution at the γ-position were employed, while unsubstituted allenoates produced cyclopentenols. The former reaction likely involves a Michael/aldol/nucleophilic cyclization sequence in a domino manner.
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Affiliation(s)
- Narendra Kumar Vaishanv
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
| | - Sanoop P Chandrasekharan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
| | - Mohd Khalid Zaheer
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India. and Academy of Scientific and Innovative Research, New Delhi, India
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3
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Deng ZX, Zheng Y, Xie ZZ, Gao YH, Xiao JA, Xie SQ, Xiang HY, Chen XQ, Yang H. Phosphine-Mediated MBH-Type/Umpolung Addition Domino Sequence: Divergent Construction of Coumarins. Org Lett 2019; 22:488-492. [PMID: 31873033 DOI: 10.1021/acs.orglett.9b04248] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We herein report a phosphine-mediated domino process of MBH-type reaction/umpolung γ-addition through the rational integration of the privileged reactivities of alkynoate. Simply by manipulating the nucleophilic reagent, the developed protocol offers a facile, diversity-oriented construction of a wide range of three-substituted coumarins.
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Affiliation(s)
- Zhi-Xiong Deng
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Yu Zheng
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Yue-Heng Gao
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Jun-An Xiao
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics , Nanning Normal University , Nanning 530001 , P. R. China
| | - Si-Qi Xie
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China.,Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety , Central South University , Changsha 410083 , P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering , Central South University , Changsha 410083 , P. R. China.,Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety , Central South University , Changsha 410083 , P. R. China
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4
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Chen Q, Bao Y, Yang X, Dai Z, Yang F, Zhou Q. Umpolung of o-Hydroxyaryl Azomethine Ylides: Entry to Functionalized γ-Aminobutyric Acid under Phosphine Catalysis. Org Lett 2018; 20:5380-5383. [DOI: 10.1021/acs.orglett.8b02297] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qingqing Chen
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Yishu Bao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Xiuqin Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Zonghao Dai
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Fulai Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, China
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5
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Yao C, Bao Y, Lu T, Zhou Q. Stereoselective Synthesis of Functionalized Benzooxazepino[5,4-a]isoindolone Derivatives via Cesium Carbonate Catalyzed Formal [5 + 2] Annulation of 2-(2-Hydroxyphenyl)isoindoline-1,3-dione with Allenoates. Org Lett 2018; 20:2152-2155. [DOI: 10.1021/acs.orglett.8b00382] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chao Yao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Yishu Bao
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China
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6
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Zhang K, Cai L, Yang Z, Houk KN, Kwon O. Bridged [2.2.1] bicyclic phosphine oxide facilitates catalytic γ-umpolung addition-Wittig olefination. Chem Sci 2018; 9:1867-1872. [PMID: 29732112 PMCID: PMC5909331 DOI: 10.1039/c7sc04381c] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 01/02/2018] [Indexed: 12/13/2022] Open
Abstract
A novel bridged [2.2.1] bicyclic phosphine oxide, devised to circumvent the waste generation and burdens of purification that are typical of reactions driven by the generation of phosphine oxides, has been prepared in three steps from commercially available cyclopent-3-ene-1-carboxylic acid. The performance of this novel phosphine oxide was superior to those of current best-in-class counterparts, as verified experimentally through kinetic analysis of its silane-mediated reduction. It has been applied successfully in halide-/base-free catalytic γ-umpolung addition-Wittig olefinations of allenoates and 2-amidobenzaldehydes to produce 1,2-dihydroquinolines with good efficiency. One of the 1,2-dihydroquinoline products was converted to known antitubercular furanoquinolines.
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Affiliation(s)
- Kui Zhang
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - Lingchao Cai
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - Zhongyue Yang
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - K N Houk
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , USA .
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8
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Huang Z, Dai Z, Zhu J, Yang F, Zhou Q. Synthesis of functionalized 2,5-dihydropyrrole derivatives via a convenient [3 + 2] annulation of azomethine ylides with allenoates. Org Biomol Chem 2018; 16:6638-6646. [DOI: 10.1039/c8ob01946k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A convenient [3 + 2] annulation of azomethine ylides with allenoates to synthesize highly functionalized 2,5-dihydropyrrole derivatives was developed.
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Affiliation(s)
- Zhusheng Huang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, 210009
- P. R. China
| | - Zonghao Dai
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, 210009
- P. R. China
| | - Jin Zhu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, 210009
- P. R. China
| | - Fulai Yang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, 210009
- P. R. China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing, 210009
- P. R. China
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Huang Z, Bao Y, Zhang Y, Yang F, Lu T, Zhou Q. Hydroxy-Assisted Regio- and Stereoselective Synthesis of Functionalized 4-Methylenepyrrolidine Derivatives via Phosphine-Catalyzed [3 + 2] Cycloaddition of Allenoates with o-Hydroxyaryl Azomethine Ylides. J Org Chem 2017; 82:12726-12734. [DOI: 10.1021/acs.joc.7b02560] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Zhusheng Huang
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yishu Bao
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yu Zhang
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Fulai Yang
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Qingfa Zhou
- State Key Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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10
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Huang Z, Yang X, Yang F, Lu T, Zhou Q. Phosphine-Catalyzed Domino β/γ-Additions of Benzofuranones with Allenoates: A Method for Unsymmetrical 3,3-Disubstituted Benzofuranones. Org Lett 2017; 19:3524-3527. [DOI: 10.1021/acs.orglett.7b01482] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhusheng Huang
- State Key
Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xiuqin Yang
- State Key
Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Fulai Yang
- State Key
Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- State Key
Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Qingfa Zhou
- State Key
Laboratory of Natural
Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
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11
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Ren ZL, Guan ZR, Kong HH, Ding MW. Multifunctional odorless isocyano(triphenylphosphoranylidene)-acetates: synthesis and direct one-pot four-component Ugi/Wittig cyclization to multisubstituted oxazoles. Org Chem Front 2017. [DOI: 10.1039/c7qo00490g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new one-step four-component synthesis of multisubstituted oxazoles has been developed.
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Affiliation(s)
- Zhi-Lin Ren
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
| | - Zhi-Rong Guan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
| | - Han-Han Kong
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
| | - Ming-Wu Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
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