51
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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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52
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Hu B, Deng L. Catalytic Asymmetric Synthesis of Trifluoromethylated γ-Amino Acids through the Umpolung Addition of Trifluoromethyl Imines to Carboxylic Acid Derivatives. Angew Chem Int Ed Engl 2018; 57:2233-2237. [PMID: 29232488 PMCID: PMC6408948 DOI: 10.1002/anie.201710915] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Indexed: 11/07/2022]
Abstract
Novel cinchona alkaloid derived chiral phase-transfer catalysts enabled the highly chemo-, regio-, diastereo-, and enantioselective umpolung addition of trifluoromethyl imines to α,β-unsaturated N-acyl pyrroles. With a catalyst loading ranging from 0.2 to 5.0 mol %, this new catalytic asymmetric transformation provides facile and high-yielding access to highly enantiomerically enriched chiral trifluoromethylated γ-amino acids and γ-lactams.
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Affiliation(s)
- Bin Hu
- Department of Chemistry Brandeis University Waltham, Massachusetts 02454-9110, United States
| | - Li Deng
- Department of Chemistry Brandeis University Waltham, Massachusetts 02454-9110, United States
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53
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Hu B, Deng L. Catalytic Asymmetric Synthesis of Trifluoromethylated γ-Amino Acids through the Umpolung Addition of Trifluoromethyl Imines to Carboxylic Acid Derivatives. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710915] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bin Hu
- Department of Chemistry; Brandeis University; Waltham MA 02454-9110 USA
| | - Li Deng
- Department of Chemistry; Brandeis University; Waltham MA 02454-9110 USA
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54
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Schömberg F, Zi Y, Vilotijevic I. Lewis-base-catalysed selective reductions of ynones with a mild hydride donor. Chem Commun (Camb) 2018. [DOI: 10.1039/c8cc00058a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Nucleophilic phosphines catalyze efficient 1,2-reductions of ynones employing pinacolborane as a mild hydride donor in the presence of alcohol additives.
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Affiliation(s)
- F. Schömberg
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- Jena
- Germany
| | - Y. Zi
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- Jena
- Germany
| | - I. Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry
- Friedrich Schiller University Jena
- Jena
- Germany
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55
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Cheng K, Bao Y, Wang J, Dai Z, Lu J, Zhou Q. Hydroxy-assisted regio- and stereoselective synthesis of functionalized alkenes via phosphine-catalyzed β′-umpolung addition of o-hydroxy aromatic aldimines to allenoates. Org Chem Front 2018. [DOI: 10.1039/c8qo00460a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An unprecedented β′-umpolung addition of o-hydroxy aromatic aldimines with allenoates has been developed under the catalysis of phosphine.
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Affiliation(s)
- Kunpeng Cheng
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yishu Bao
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jiahua Wang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Zonghao Dai
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jinrong Lu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Qingfa Zhou
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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56
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El Arba M, Dibrell SE, Crouch IT, Frantz DE. Unified Approach to Substituted Allenoates via Pd-Catalyzed β-Hydride Elimination of (E)-Enol Triflates. Org Lett 2017; 19:5446-5449. [PMID: 28953409 DOI: 10.1021/acs.orglett.7b02736] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A robust synthesis of allenoates via a Pd-catalyzed β-hydride elimination of (E)-enol triflates is presented. Salient features of this method include low catalyst loadings, mild reaction conditions, and the ability to access all four patterns of substituted allenoates from a single substrate class.
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Affiliation(s)
- Marie El Arba
- Department of Chemistry, The University of Texas at San Antonio , San Antonio, Texas 78249, United States
| | - Sara E Dibrell
- Department of Chemistry, The University of Texas at San Antonio , San Antonio, Texas 78249, United States
| | - Ian T Crouch
- Department of Chemistry, The University of Texas at San Antonio , San Antonio, Texas 78249, United States
| | - Doug E Frantz
- Department of Chemistry, The University of Texas at San Antonio , San Antonio, Texas 78249, United States
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57
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Huang B, Li C, Wang H, Wang C, Liu L, Zhang J. Phosphine-Catalyzed Diastereo- and Enantioselective Michael Addition of β-Carbonyl Esters to β-Trifluoromethyl and β-Ester Enones: Enhanced Reactivity by Inorganic Base. Org Lett 2017; 19:5102-5105. [PMID: 28898087 DOI: 10.1021/acs.orglett.7b02365] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A novel chiral biamide-phosphine multifunctional catalyst has been developed that mediates the asymmetric intermolecular Michael addition of β-carbonyl esters to β-trifluoromethyl enones and 3-aroyl acrylates in the presence of competing methyl acrylate and the inorganic base. This method provides a facile access to structurally diverse trifluoromethyl and quaternary stereogenic centers with excellent enantioselectivity (up to 99% ee) and good diastereoselectivity (up to 13:1 dr). The addition of the inorganic base (K3PO4) does not cause the background racemic reaction and enhances the reactivity by serving as a co-catalyst.
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Affiliation(s)
- Ben Huang
- School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Cao Li
- School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Huamin Wang
- School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Caihui Wang
- School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Lu Liu
- School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, P. R. China
| | - Junliang Zhang
- School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchuan Road, Shanghai 200241, P. R. China
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58
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Zhang L, Yang W, Zhou L, Liu H, Huang J, Xiao Y, Guo H. Phosphine-Catalyzed Diastereoselective [3 + 3] Annulation of Morita-Baylis-Hillman Carbonates with C
,N
-Cyclic Azomethine Imines. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2958] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Lei Zhang
- Department of Applied Chemistry; China Agricultural University; Beijing 100193 People's Republic of China
| | - Wenjun Yang
- Department of Applied Chemistry; China Agricultural University; Beijing 100193 People's Republic of China
| | - Leijie Zhou
- Department of Applied Chemistry; China Agricultural University; Beijing 100193 People's Republic of China
| | - Honglei Liu
- Department of Applied Chemistry; China Agricultural University; Beijing 100193 People's Republic of China
| | - Jiaxing Huang
- Department of Applied Chemistry; China Agricultural University; Beijing 100193 People's Republic of China
| | - Yumei Xiao
- Department of Applied Chemistry; China Agricultural University; Beijing 100193 People's Republic of China
| | - Hongchao Guo
- Department of Applied Chemistry; China Agricultural University; Beijing 100193 People's Republic of China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Guizhou University; Guiyang 550025 China
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59
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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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60
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Zhou L, Yuan C, Zhang C, Zhang L, Gao Z, Wang C, Liu H, Wu Y, Guo H. Enantioselective Synthesis of Quinazoline-Based Heterocycles through Phosphine-Catalyzed Asymmetric [3+3] Annulation of Morita−Baylis−Hillman Carbonates with Azomethine Imines. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601434] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Leijie Zhou
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Chunhao Yuan
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Cheng Zhang
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Lei Zhang
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Zhenzhen Gao
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Chang Wang
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Honglei Liu
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Yang Wu
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Hongchao Guo
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering; Ministry of Education; Guizhou University; Guiyang 550025 People's Republic of China
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61
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Gao YN, Xu Q, Wei Y, Shi M. Exploration of A New Zwitterion: Phosphine-Catalyzed [2+1+2] Cycloaddition Reaction. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700242] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Qin Xu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry; University of Chinese Academy of Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 People's Republic of China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- State Key Laboratory of Organometallic Chemistry; University of Chinese Academy of Sciences; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 354 Fenglin Lu Shanghai 200032 People's Republic of China
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62
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Gao YN, Shi M. Enantioselective Synthesis of Isatin-Derived α-(Trifluoromethyl)imine Derivatives: Phosphine-Catalyzed γ-Addition of α-(Trifluoromethyl)imines and Allenoates. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700048] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 200237 Shanghai China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 200237 Shanghai China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; 300071 Tianjin P. R. China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road 200032 Shanghai China
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63
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Chen P, Wang K, Guo W, Liu X, Liu Y, Li C. Enantioselective Reactions of 2‐Sulfonylalkyl Phenols with Allenic Esters: Dynamic Kinetic Resolution and [4+2] Cycloaddition Involving
ortho
‐Quinone Methide Intermediates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700250] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Ping Chen
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Kai Wang
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Wengang Guo
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Xianghui Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Yan Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Can Li
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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64
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Chen P, Wang K, Guo W, Liu X, Liu Y, Li C. Enantioselective Reactions of 2‐Sulfonylalkyl Phenols with Allenic Esters: Dynamic Kinetic Resolution and [4+2] Cycloaddition Involving
ortho
‐Quinone Methide Intermediates. Angew Chem Int Ed Engl 2017; 56:3689-3693. [DOI: 10.1002/anie.201700250] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Ping Chen
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Kai Wang
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Wengang Guo
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Xianghui Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- Graduate University of Chinese Academy of Sciences Beijing 100049 China
| | - Yan Liu
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Can Li
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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65
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Liu H, Zhao Y, Li Z, Jia H, Zhang C, Xiao Y, Guo H. Lewis base-catalyzed diastereoselective [3 + 2] cycloaddition reaction of nitrones with electron-deficient alkenes: an access to isoxazolidine derivatives. RSC Adv 2017. [DOI: 10.1039/c7ra04264g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A Lewis base-catalyzed [3 + 2] cycloaddition reaction of nitrones with electron-deficient alkenes has been achieved under mild reaction conditions, affording functionalized isoxazolidines as single diastereomers in moderate to excellent yields.
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Affiliation(s)
- Honglei Liu
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Yan Zhao
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Zhen Li
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Hao Jia
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Cheng Zhang
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Yumei Xiao
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
| | - Hongchao Guo
- Department of Applied Chemistry
- China Agricultural University
- Beijing 100193
- China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering
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66
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Zhou T, Li S, Huang B, Li C, Zhao Y, Chen J, Chen A, Xiao Y, Liu L, Zhang J. Phosphine-catalyzed Friedel–Crafts reaction of naphthols with para-quinone methides: expedient access to triarylmethanes. Org Biomol Chem 2017; 15:4941-4945. [DOI: 10.1039/c7ob00911a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel phosphine-catalyzed Friedel–Crafts reaction of naphthols with para-quinone methides has been developed.
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Affiliation(s)
- Tao Zhou
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Shenhuan Li
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Ben Huang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Cao Li
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Yang Zhao
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Jieqiong Chen
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Aoling Chen
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Yuanjin Xiao
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Lu Liu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Junliang Zhang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
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67
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Wang C, Jia H, Zhang C, Gao Z, Zhou L, Yuan C, Xiao Y, Guo H. Phosphine-Catalyzed Enantioselective [2+4] Cycloaddition to Synthesize Pyrrolidin-2-one Fused Dihydropyrans Using α-Substituted Allenoates as C2 Synthons. J Org Chem 2016; 82:633-641. [DOI: 10.1021/acs.joc.6b02659] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Chang Wang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Hao Jia
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Cheng Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Zhenzhen Gao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Leijie Zhou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Chunhao Yuan
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, China
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68
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Wang ZX, Bai XY, Yao HC, Li BJ. Synthesis of Amides with Remote Stereocenters by Catalytic Asymmetric γ-Alkynylation of α,β-Unsaturated Amides. J Am Chem Soc 2016; 138:14872-14875. [DOI: 10.1021/jacs.6b10415] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Zi-Xuan Wang
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xiao-Yan Bai
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Han-Chao Yao
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Bi-Jie Li
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
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69
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Ordóñez M, Cativiela C, Romero-Estudillo I. An update on the stereoselective synthesis of γ-amino acids. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.08.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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70
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Asymmetric cyanation of imines via dipeptide-derived organophosphine dual-reagent catalysis. Nat Commun 2016; 7:12720. [PMID: 27625043 PMCID: PMC5027285 DOI: 10.1038/ncomms12720] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 07/27/2016] [Indexed: 11/16/2022] Open
Abstract
Over the past few decades, enantioselective phosphine organocatalysis has evolved rapidly into a highly efficient catalytic strategy for a range of useful reactions. However, as restricted by the traditional catalytic modes, some important reactions, such as asymmetric Strecker-type reactions, have thus far been out of reach of this strategy. Reported herein is an application of enantioselective phosphine organocatalysis for asymmetric Strecker-type reactions, enabled by a dual-reagent catalyst system in which the key organophosphorus zwitterion intermediate, generated in situ by mixing a chiral dipeptide-derived multifunctional organophosphine with methyl acrylate, is used as a highly efficient chiral Lewis base catalyst. The high efficiency of this catalytic system is demonstrated in the asymmetric cyanation of isatin-derived ketimines and azomethine aldimines as well as in the kinetic resolution of racemic 3-substituted azomethines. Mechanistic studies provide experimental evidence for the intermediacy of the putative zwitterion and its role as a catalytically active Lewis base. The Strecker reaction is a power method for the synthesis of cyano-substituted compounds. Here the authors report a dual-reagent system for asymmetric Strecker reactions, where an in situ formed organocatalyst/methyl acrylate zwitterionic adduct activates both the cyanide source and the electrophile.
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71
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Ziegler DT, Fu GC. Catalytic Enantioselective Carbon-Oxygen Bond Formation: Phosphine-Catalyzed Synthesis of Benzylic Ethers via the Oxidation of Benzylic C-H Bonds. J Am Chem Soc 2016; 138:12069-72. [PMID: 27618638 DOI: 10.1021/jacs.6b08486] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Benzylic alcohols and ethers are common subunits in bioactive molecules, as well as useful intermediates in organic chemistry. In this Communication, we describe a new approach to the enantioselective synthesis of benzylic ethers through the chiral phosphine-catalyzed coupling of two readily available partners, γ-aryl-substituted alkynoates and alcohols, under mild conditions. In this process, the alkynoate partner undergoes an internal redox reaction. Specifically, the benzylic position is oxidized with good enantioselectivity, and the alkyne is reduced to the alkene.
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Affiliation(s)
- Daniel T Ziegler
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Gregory C Fu
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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72
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Affiliation(s)
- Wenzhen Fu
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic
and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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73
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Mielgo A, Palomo C. 1H-Imidazol-4(5H)-ones and thiazol-4(5H)-ones as emerging pronucleophiles in asymmetric catalysis. Beilstein J Org Chem 2016; 12:918-36. [PMID: 27340482 PMCID: PMC4902076 DOI: 10.3762/bjoc.12.90] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/05/2016] [Indexed: 11/23/2022] Open
Abstract
Asymmetric catalysis represents a very powerful tool for the synthesis of enantiopure compounds. In this context the main focus has been directed not only to the search for new efficient chiral catalysts, but also to the development of efficient pronucleophiles. This review highlights the utility and first examples of 1H-imidazol-4(5H)-ones and thiazol-4(5H)-ones as pronucleophiles in catalytic asymmetric reactions.
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Affiliation(s)
- Antonia Mielgo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain
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74
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Affiliation(s)
- Xiaohong Chen
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - Xiaoguang Liu
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
| | - Justin T. Mohr
- Department
of Chemistry, University of Illinois at Chicago, 845 West Taylor
Street, Chicago, Illinois 60607, United States
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75
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Alonso JM, Quirós MT, Muñoz MP. Chirality transfer in metal-catalysed intermolecular addition reactions involving allenes. Org Chem Front 2016. [DOI: 10.1039/c6qo00207b] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review covers chirality transfer in metal-catalysed intermolecular addition reactions involving allenes, including axial-to-central chirality transfer, asymmetric catalysis and racemization.
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76
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Wang T, Yu Z, Hoon DL, Phee CY, Lan Y, Lu Y. Regiodivergent Enantioselective γ-Additions of Oxazolones to 2,3-Butadienoates Catalyzed by Phosphines: Synthesis of α,α-Disubstituted α-Amino Acids and N,O-Acetal Derivatives. J Am Chem Soc 2015; 138:265-71. [DOI: 10.1021/jacs.5b10524] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tianli Wang
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Zhaoyuan Yu
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, P. R. China
| | - Ding Long Hoon
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Claire Yan Phee
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, P. R. China
| | - Yixin Lu
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou Industrial Park, Suzhou, Jiangsu P. R. China, 215123
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77
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Takizawa S, Kishi K, Yoshida Y, Mader S, Arteaga FA, Lee S, Hoshino M, Rueping M, Fujita M, Sasai H. Phosphine-Catalyzed β,γ-Umpolung Domino Reaction of Allenic Esters: Facile Synthesis of Tetrahydrobenzofuranones Bearing a Chiral Tetrasubstituted Stereogenic Carbon Center. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508022] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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78
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Takizawa S, Kishi K, Yoshida Y, Mader S, Arteaga FA, Lee S, Hoshino M, Rueping M, Fujita M, Sasai H. Phosphine‐Catalyzed β,γ‐Umpolung Domino Reaction of Allenic Esters: Facile Synthesis of Tetrahydrobenzofuranones Bearing a Chiral Tetrasubstituted Stereogenic Carbon Center. Angew Chem Int Ed Engl 2015; 54:15511-5. [DOI: 10.1002/anie.201508022] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki‐shi, Osaka 567‐0047 (Japan) http://www.sanken.osaka‐u.ac.jp/labs/soc/socmain.html
| | - Kenta Kishi
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki‐shi, Osaka 567‐0047 (Japan) http://www.sanken.osaka‐u.ac.jp/labs/soc/socmain.html
| | - Yasushi Yoshida
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki‐shi, Osaka 567‐0047 (Japan) http://www.sanken.osaka‐u.ac.jp/labs/soc/socmain.html
| | - Steffen Mader
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)
| | - Fernando Arteaga Arteaga
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki‐shi, Osaka 567‐0047 (Japan) http://www.sanken.osaka‐u.ac.jp/labs/soc/socmain.html
| | - Shoukou Lee
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113‐8656 (Japan)
| | - Manabu Hoshino
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113‐8656 (Japan)
| | - Magnus Rueping
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)
| | - Makoto Fujita
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113‐8656 (Japan)
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki‐shi, Osaka 567‐0047 (Japan) http://www.sanken.osaka‐u.ac.jp/labs/soc/socmain.html
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79
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Zhang K, Cai L, Jiang X, Garcia-Garibay MA, Kwon O. Phosphine-Mediated Iterative Arene Homologation Using Allenes. J Am Chem Soc 2015; 137:11258-61. [PMID: 26295504 PMCID: PMC4915745 DOI: 10.1021/jacs.5b07403] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A PPh3-mediated multicomponent reaction between o-phthalaldehydes, nucleophiles, and monosubstituted allenes furnishes functionalized non-C2-symmetric naphthalenes in synthetically useful yields. When the o-phthalaldehydes were reacted with 1,3-disubstituted allenes in the presence of PPh2Et, naphthalene derivatives were also obtained in up to quantitative yields. The mechanism of the latter transformation is straightforward: aldol addition followed by Wittig olefination and dehydration. The mechanism of the former is a tandem γ-umpolung/aldol/Wittig/dehydration process, as established by preparation of putative reaction intermediates and mass spectrometric analysis. This transformation can be applied iteratively to prepare anthracenes and tetracenes using carboxylic acids as pronucleophiles.
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Affiliation(s)
- Kui Zhang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Lingchao Cai
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Xing Jiang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Miguel A. Garcia-Garibay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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80
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Wang T, Yu Z, Hoon DL, Huang KW, Lan Y, Lu Y. Highly enantioselective construction of tertiary thioethers and alcohols via phosphine-catalyzed asymmetric γ-addition reactions of 5 H-thiazol-4-ones and 5 H-oxazol-4-ones: scope and mechanistic understandings. Chem Sci 2015; 6:4912-4922. [PMID: 29142722 PMCID: PMC5664357 DOI: 10.1039/c5sc01614b] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 06/02/2015] [Indexed: 12/11/2022] Open
Abstract
Phosphine-catalyzed highly enantioselective γ-additions of 5H-thiazol-4-ones and 5H-oxazol-4-ones to allenoates have been developed for the first time. With the employment of amino-acid derived bifunctional phosphines, a wide range of substituted 5H-thiazol-4-one and 5H-oxazol-4-one derivatives bearing heteroatom (S or O)-containing tertiary chiral centers were constructed in high yields and excellent enantioselectivities. The reported method provides facile access to enantioenriched tertiary thioethers/alcohols. The mechanism of the γ-addition reaction was investigated by performing DFT calculations, and the hydrogen bonding interactions between the Brønsted acid moiety of the phosphine catalysts and the "C[double bond, length as m-dash]O" unit of the donor molecules were shown to be crucial in asymmetric induction.
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Affiliation(s)
- Tianli Wang
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore .
| | - Zhaoyuan Yu
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , P. R. China .
| | - Ding Long Hoon
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore .
| | - Kuo-Wei Huang
- Division of Physical Sciences and Engineering , KAUST Catalysis Center , King Abdullah University of Science and Technology , Thuwal 23955-6900 , Saudi Arabia
| | - Yu Lan
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , P. R. China .
| | - Yixin Lu
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore .
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81
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Kalek M, Fu GC. Phosphine-Catalyzed Doubly Stereoconvergent γ-Additions of Racemic Heterocycles to Racemic Allenoates: The Catalytic Enantioselective Synthesis of Protected α,α-Disubstituted α-Amino Acid Derivatives. J Am Chem Soc 2015; 137:9438-42. [PMID: 26192217 PMCID: PMC4577964 DOI: 10.1021/jacs.5b05528] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Indexed: 11/29/2022]
Abstract
Methods have recently been developed for the phosphine-catalyzed asymmetric γ-addition of nucleophiles to readily available allenoates and alkynoates to generate useful α,β-unsaturated carbonyl compounds that bear a stereogenic center in either the γ or the δ position (but not both) with high stereoselectivity. The utility of this approach would be enhanced considerably if the stereochemistry at both termini of the new bond could be controlled effectively. In this report, we describe the achievement of this objective, specifically, that a chiral phosphepine can catalyze the stereoconvergent γ-addition of a racemic nucleophile to a racemic electrophile; through the choice of an appropriate heterocycle as the nucleophilic partner, this new method enables the synthesis of protected α,α-disubstituted α-amino acid derivatives in good yield, diastereoselectivity, and enantioselectivity.
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Affiliation(s)
- Marcin Kalek
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, Pasadena, California 91125, United States
| | - Gregory C. Fu
- Division of Chemistry and
Chemical Engineering, California Institute
of Technology, Pasadena, California 91125, United States
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82
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Stereoselective Syntheses of α,β-Unsaturated γ-Amino Esters Through Phosphine-Catalyzed γ-Umpolung Additions of Sulfonamides to γ-Substituted Allenoates. Tetrahedron Lett 2015; 56:3273-3276. [PMID: 26041942 DOI: 10.1016/j.tetlet.2015.01.120] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
α,β-Unsaturated γ-amino esters can be synthesized efficiently and stereoselectively through phosphine-catalyzed γ-umpolung additions of sulfonamides to γ-substituted allenoates. The structures of the sulfonamide and γ-substituted allenoate partners can be varied to achieve a range of α,β-unsaturated γ-amino esters with potentially interesting chemical and biological properties.
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83
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Gu Y, Hu P, Ni C, Tong X. Phosphine-Catalyzed Addition/Cycloaddition Domino Reactions of β′-Acetoxy Allenoate: Highly Stereoselective Access to 2-Oxabicyclo[3.3.1]nonane and Cyclopenta[a]pyrrolizine. J Am Chem Soc 2015; 137:6400-6. [DOI: 10.1021/jacs.5b03273] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yiting Gu
- Shanghai
Key Laboratory of
Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
| | - Pengfei Hu
- Shanghai
Key Laboratory of
Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
| | - Chunjie Ni
- Shanghai
Key Laboratory of
Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaofeng Tong
- Shanghai
Key Laboratory of
Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
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84
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Zhang L, Liu H, Qiao G, Hou Z, Liu Y, Xiao Y, Guo H. Phosphine-catalyzed highly enantioselective [3 + 3] cycloaddition of Morita-Baylis-Hillman carbonates with C,N-cyclic azomethine imines. J Am Chem Soc 2015; 137:4316-9. [PMID: 25799312 DOI: 10.1021/jacs.5b01138] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The first phosphine-catalyzed highly enantioselective [3 + 3] cycloaddition of Morita-Baylis-Hillman carbonates with C,N-cyclic azomethine imines is described. Using a spirocyclic chiral phosphine as the catalyst, a novel class of pharmaceutically interesting 4,6,7,11b-tetrahydro-1H-pyridazino[6,1-a]iso-quinoline derivatives were obtained in high yields with good to excellent diastereoselectivities and extremely excellent enantioselectivities (98->99% ee).
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Affiliation(s)
- Lei Zhang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Honglei Liu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Guanyu Qiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Zhanfeng Hou
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yang Liu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
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85
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Kramer S, Fu GC. Use of a new spirophosphine to achieve catalytic enantioselective [4 + 1] annulations of amines with allenes to generate dihydropyrroles. J Am Chem Soc 2015; 137:3803-6. [PMID: 25780940 DOI: 10.1021/jacs.5b01944] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Due in part to the common occurrence of five-membered nitrogen heterocycles in bioactive molecules, the discovery of methods for the enantioselective synthesis of such structures is a useful endeavor. Building on a single example by Tong of a phosphine-catalyzed [4 + 1] annulation of an amine with an allene that furnished an achiral dihydropyrrole in 22% yield, we have developed, with the aid of a new chiral spirophosphine catalyst, a method with increased utility, specifically, improved yield, enhanced scope (the use of γ-substituted allenes), and good ee. The enantioenriched dihydropyrrole products can be transformed into other interesting families of compounds with very good stereoselectivity.
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Affiliation(s)
- Søren Kramer
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Gregory C Fu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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86
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Li Y, Su X, Zhou W, Li W, Zhang J. Amino Acid Derived Phosphine-Catalyzed Enantioselective 1,4-Dipolar Spiroannulation of Cyclobutenones and Isatylidenemalononitrile. Chemistry 2015; 21:4224-8. [DOI: 10.1002/chem.201406475] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Indexed: 12/16/2022]
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87
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Wang T, Hoon DL, Lu Y. Enantioselective synthesis of 3-fluoro-3-allyl-oxindoles via phosphine-catalyzed asymmetric γ-addition of 3-fluoro-oxindoles to 2,3-butadienoates. Chem Commun (Camb) 2015; 51:10186-9. [DOI: 10.1039/c5cc03289j] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first phosphine-catalyzed enantioselective γ-addition of 3-fluoro-oxindoles to 2,3-butadienoates has been developed.
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Affiliation(s)
- Tianli Wang
- Department of Chemistry
- National University of Singapore
- Republic of Singapore
| | - Ding Long Hoon
- Department of Chemistry
- National University of Singapore
- Republic of Singapore
| | - Yixin Lu
- Department of Chemistry
- National University of Singapore
- Republic of Singapore
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88
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Gandi VR, Lu Y. Phosphine-catalyzed regioselective Michael addition to allenoates. Chem Commun (Camb) 2015; 51:16188-90. [DOI: 10.1039/c5cc06197k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first phosphine catalysed Michael addition of arylcyanoacetates to allenoates has been developed, and the β-selective products with a quaternary center were obtained in excellent yields.
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Affiliation(s)
- Vasudeva Rao Gandi
- Department of Chemistry
- National University of Singapore
- Republic of Singapore 117543
| | - Yixin Lu
- Department of Chemistry
- National University of Singapore
- Republic of Singapore 117543
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89
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Fang YQ, Tadross PM, Jacobsen EN. Highly enantioselective, intermolecular hydroamination of allenyl esters catalyzed by bifunctional phosphinothioureas. J Am Chem Soc 2014; 136:17966-8. [PMID: 25496451 PMCID: PMC4291748 DOI: 10.1021/ja5117638] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
![]()
Bifunctional
phosphinothiourea catalysts have been developed successfully
for the highly regio- and enantioselective γ-hydroamination
of allenyl and propargyl esters with N-methoxy carbamate
nucleophiles to yield α,β-unsaturated γ-amino acid
ester products. In the case of propargyl ester substrates, the reaction
proceeds through reversible phosphinothiourea-catalyzed isomerization
to the corresponding allenyl ester. The high enantioselectivity of
the process is attributed to a cooperative conjugate addition of a
thiourea-bound carbamate anion to a vinyl phosphonium ion resulting
from covalent activation of the allenyl ester substrate.
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Affiliation(s)
- Yuan-Qing Fang
- Department of Chemistry and Chemical Biology, Harvard University , Cambridge, Massachusetts 02138, United States
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90
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Wang HY, Zhang K, Zheng CW, Chai Z, Cao DD, Zhang JX, Zhao G. Asymmetric Dual-Reagent Catalysis: Mannich-type Reactions Catalyzed by Ion Pair. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409342] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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91
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Wang HY, Zhang K, Zheng CW, Chai Z, Cao DD, Zhang JX, Zhao G. Asymmetric Dual-Reagent Catalysis: Mannich-type Reactions Catalyzed by Ion Pair. Angew Chem Int Ed Engl 2014; 54:1775-9. [DOI: 10.1002/anie.201409342] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 11/14/2014] [Indexed: 11/06/2022]
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92
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Abbasov ME, Romo D. The ever-expanding role of asymmetric covalent organocatalysis in scalable, natural product synthesis. Nat Prod Rep 2014; 31:1318-27. [PMID: 25042097 PMCID: PMC5470744 DOI: 10.1039/c4np00025k] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Following the turn of the millennium, the role of asymmetric covalent organocatalysis has developed into a scalable, synthetic paradigm galvanizing the synthetic community toward utilization of these methods toward more practical, metal-free syntheses of natural products. A myriad of reports on asymmetric organocatalytic modes of substrate activation relying on small, exclusively organic molecules are delineating what has now become the multifaceted field of organocatalysis. In covalent catalysis, the catalyst and substrate combine to first form a covalent, activated intermediate that enters the catalytic cycle. Following asymmetric bond formation, the chiral catalyst is recycled through hydrolysis or displacement by a pendant group on the newly formed product. Amine- and phosphine-based organocatalysts are the most common examples that have led to a vast array of reaction types. This Highlight provides a brief overview of covalent modes of organocatalysis and applications of scalable versions of these methods applied to the total synthesis of natural products including examples from our own laboratory.
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Affiliation(s)
- Mikail E Abbasov
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas, United States.
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Xiao Y, Sun Z, Guo H, Kwon O. Chiral phosphines in nucleophilic organocatalysis. Beilstein J Org Chem 2014; 10:2089-121. [PMID: 25246969 PMCID: PMC4168899 DOI: 10.3762/bjoc.10.218] [Citation(s) in RCA: 239] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 08/01/2014] [Indexed: 12/22/2022] Open
Abstract
This review discusses the tertiary phosphines possessing various chiral skeletons that have been used in asymmetric nucleophilic organocatalytic reactions, including annulations of allenes, alkynes, and Morita–Baylis–Hillman (MBH) acetates, carbonates, and ketenes with activated alkenes and imines, allylic substitutions of MBH acetates and carbonates, Michael additions, γ-umpolung additions, and acylations of alcohols.
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Affiliation(s)
- Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Zhanhu Sun
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
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94
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Nella N, Parker E, Hitce J, Larini P, Jazzar R, Baudoin O. Efficient Pd-Catalyzed Allene Synthesis from Alkynes and Aryl Bromides through an Intramolecular Base-Assisted Deprotonation (iBAD) Mechanism. Chemistry 2014; 20:13272-8. [DOI: 10.1002/chem.201403213] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Indexed: 12/31/2022]
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95
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Fukata Y, Okamura T, Asano K, Matsubara S. Asymmetric isomerization of ω-hydroxy-α,β-unsaturated thioesters into β-mercaptolactones by a bifunctional aminothiourea catalyst. Org Lett 2014; 16:2184-7. [PMID: 24684317 DOI: 10.1021/ol500637x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We present a novel methodology for the asymmetric synthesis of β-mercaptolactones via isomerization of ω-hydroxy-α,β-unsaturated thioesters by means of a bifunctional aminothiourea catalyst. The catalyst interacts with the substrate through the cooperative action of both a covalent bond at the amino group and noncovalent bonding at the thiourea group. The potential for an enantiodivergent synthesis could also be demonstrated by carrying out the reaction in a different solvent system.
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Affiliation(s)
- Yukihiro Fukata
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University , Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
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97
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Wang T, Yao W, Zhong F, Pang GH, Lu Y. Phosphine-Catalyzed Enantioselective γ-Addition of 3-Substituted Oxindoles to 2,3-Butadienoates and 2-Butynoates: Use of Prochiral Nucleophiles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201307757] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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98
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Wang T, Yao W, Zhong F, Pang GH, Lu Y. Phosphine-Catalyzed Enantioselective γ-Addition of 3-Substituted Oxindoles to 2,3-Butadienoates and 2-Butynoates: Use of Prochiral Nucleophiles. Angew Chem Int Ed Engl 2014; 53:2964-8. [DOI: 10.1002/anie.201307757] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 12/16/2013] [Indexed: 01/18/2023]
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99
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Takizawa S, Arteaga FA, Yoshida Y, Suzuki M, Sasai H. Enantioselective Organocatalyzed Formal [4+2] Cycloaddition of Ketimines with Allenoates: Easy Access to a Tetrahydropyridine Framework with a Chiral Tetrasubstituted Stereogenic Carbon Center. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300244] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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100
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Chen J, Cai Y, Zhao G. Asymmetric Michael Addition of Oxindoles to Allenoate Catalyzed byN-Acyl Aminophosphine: Construction of Functionalized Oxindoles with Quaternary Stereogenic Center. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300695] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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