51
|
Kawanishi M, Mizota I, Aratake K, Tanaka H, Nakahama K, Shimizu M. Synthesis of δ-Lactone and Amino Acid Frameworks Utilizing the Umpoled Reactivity of β,γ-Alkenyl α-Iminoester. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160402] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mami Kawanishi
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507
| | - Isao Mizota
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507
| | - Kana Aratake
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507
| | - Hirotaka Tanaka
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507
| | - Kenta Nakahama
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507
| | - Makoto Shimizu
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507
| |
Collapse
|
52
|
Ortiz P, Collados JF, Jumde RP, Otten E, Harutyunyan SR. Copper-Catalyzed Enantioselective Alkylation of Enolizable Ketimines with Organomagnesium Reagents. Angew Chem Int Ed Engl 2017; 56:3041-3044. [PMID: 28156047 DOI: 10.1002/anie.201609963] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/14/2016] [Indexed: 11/08/2022]
Abstract
Inexpensive and readily available organomagnesium reagents were used for the catalytic enantioselective alkylation of enolizable N-sulfonyl ketimines. The low reactivity and competing enolization of the ketimines was overcome by the use of a copper-phosphine chiral catalyst, which also rendered the transformation highly chemoselective and enantioselective for a broad range of ketimine substrates.
Collapse
Affiliation(s)
- Pablo Ortiz
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Juan F Collados
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Ravindra P Jumde
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Edwin Otten
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| |
Collapse
|
53
|
Ortiz P, Collados JF, Jumde RP, Otten E, Harutyunyan SR. Copper-Catalyzed Enantioselective Alkylation of Enolizable Ketimines with Organomagnesium Reagents. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609963] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pablo Ortiz
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Juan F. Collados
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Ravindra P. Jumde
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Edwin Otten
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Syuzanna R. Harutyunyan
- Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| |
Collapse
|
54
|
Yang S, Bian G, Chen Z, Xia X, Zhou M, Cui C, Song L. Highly efficient synthesis of chiral quaternary 3-aminooxindoles promoted by zinc( ii) chloride via Et 2Zn-catalysed addition of Grignard reagents to isaltin-derived N-tert-butanesulfinyl ketimines. RSC Adv 2017. [DOI: 10.1039/c7ra07692d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
An approach to chiral quaternary 3-aminooxindoles via Et2Zn catalyzed diastereoselective addition of various Grignard reagents to broad isaltin-derived N-tert-butanesulfinyl ketimines promoted by zinc(ii) chloride.
Collapse
Affiliation(s)
- Shiwei Yang
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Guangling Bian
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Zhongxiang Chen
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Xiaohan Xia
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Mi Zhou
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Caiyan Cui
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Ling Song
- The Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| |
Collapse
|
55
|
Zhao Y, Wang L, Zhao J. Chiral phosphoric acid catalyzed aza-Friedel-Crafts alkylation of indoles with cyclic aryl α-ketimino esters. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.12.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
56
|
Catalytic enantioselective addition of Grignard reagents to aromatic silyl ketimines. Nat Commun 2016; 7:13780. [PMID: 28008909 PMCID: PMC5196062 DOI: 10.1038/ncomms13780] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 11/01/2016] [Indexed: 12/17/2022] Open
Abstract
α-Chiral amines are of significant importance in medicinal chemistry, asymmetric synthesis and material science, but methods for their efficient synthesis are scarce. In particular, the synthesis of α-chiral amines with the challenging tetrasubstituted carbon stereocentre is a long-standing problem and catalytic asymmetric additions of organometallic reagents to ketimines that would give direct access to these molecules are underdeveloped. Here we report a highly enantioselective catalytic synthesis of N-sulfonyl protected α-chiral silyl amines via the addition of inexpensive, easy to handle and readily available Grignard reagents to silyl ketimines. The key to this success was our ability to suppress any unselective background addition reactions and side reduction pathway, through the identification of an inexpensive, chiral Cu-complex as the catalytically active structure.
Collapse
|
57
|
Chen P, Yue Z, Zhang J, Lv X, Wang L, Zhang J. Phosphine-Catalyzed Asymmetric Umpolung Addition of Trifluoromethyl Ketimines to Morita-Baylis-Hillman Carbonates. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607918] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Peng Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Zhenting Yue
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Junyou Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Xi Lv
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Lei Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes; School of Chemistry and Molecular Engineering; East China Normal University; Shanghai 200062 P.R. China
| |
Collapse
|
58
|
Dhanasekaran S, Suneja A, Bisai V, Singh VK. Approach to Isoindolinones, Isoquinolinones, and THIQs via Lewis Acid-Catalyzed Domino Strecker-Lactamization/Alkylations. Org Lett 2016; 18:634-7. [DOI: 10.1021/acs.orglett.5b03331] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Arun Suneja
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal, MP - 462 066, India
| | - Vishnumaya Bisai
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal, MP - 462 066, India
| | - Vinod K. Singh
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal, MP - 462 066, India
- Department
of Chemistry, Indian Institute of Technology, Kanpur, UP - 208 016, India
| |
Collapse
|
59
|
Mizota I, Shimizu M. Umpolung Reactions of α-Imino Esters: Useful Methods for the Preparation of α-Amino Acid Frameworks. CHEM REC 2016; 16:688-702. [DOI: 10.1002/tcr.201500267] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Isao Mizota
- Department of Chemistry for Materials; Graduate School of Engineering Mie University; Tsu Mie 514-8507 Japan
| | - Makoto Shimizu
- Department of Chemistry for Materials; Graduate School of Engineering Mie University; Tsu Mie 514-8507 Japan
| |
Collapse
|
60
|
Szcześniak P, Pieczykolan M, Stecko S. The Synthesis of α,α-Disubstituted α-Amino Acids via Ichikawa Rearrangement. J Org Chem 2016; 81:1057-74. [PMID: 26726732 DOI: 10.1021/acs.joc.5b02628] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An approach to α,α-disubstituted α-amino acids is reported. The key step is allyl cyanate-to-isocyanate rearrangement. As demonstrated, the resultant allyl isocyanates can be directly trapped with various nucleophiles, for instance, alcohols, amines, and organometallic reagents, to provide a broad range of N-functionalized allylamines. The developed method has been successfully applied in the synthesis of two bioactive peptides: 2-aminoadamantane-2-carboxylic acid derived P2X7-evoked glutamate release inhibitor and 4-amino-tetrahydropyranyl-4-carboxylic acid derived dipeptide GSK-2793660, which is currently in clinical trials as cathepsin C inhibitor for the treatment of cystic fibrosis, noncystic fibrosis bronchiectasis, ANCA-associated vasculitis and bronchiectasis.
Collapse
Affiliation(s)
- Piotr Szcześniak
- Institute of Organic Chemistry , Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Michał Pieczykolan
- Institute of Organic Chemistry , Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Sebastian Stecko
- Institute of Organic Chemistry , Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| |
Collapse
|
61
|
Gao X, Wu B, Yan Z, Zhou YG. Enantioselective palladium-catalyzed arylation of N-tosylarylimines with arylboronic acids using a chiral 2,2′-bipyridine ligand. Org Biomol Chem 2016; 14:55-8. [DOI: 10.1039/c5ob02330k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An enantioselective palladium-catalyzed arylation of N-tosylarylimines with arylboronic acids was developed by using an axially chiral 2,2′-bipyridine ligand C3-ACBP, affording chiral diarylmethamines with up to 94% ee under exogenous-base-free conditions.
Collapse
Affiliation(s)
- Xiang Gao
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Bo Wu
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Zhong Yan
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- P. R. China
| |
Collapse
|
62
|
Wu LL, Xiang Y, Yang DC, Guan Z, He YH. Biocatalytic asymmetric Mannich reaction of ketimines using wheat germ lipase. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01923k] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Wheat germ lipase (WGL) was used for the first time as a biocatalyst in asymmetric Mannich reaction of ketimines.
Collapse
Affiliation(s)
- Ling-Ling Wu
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
| | - Yang Xiang
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
| | - Da-Cheng Yang
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- PR China
| |
Collapse
|
63
|
Kang SY, Park YS. Dual Enantioselective Control using D-phenylglycine-L-proline-derived Catalysts for the Enantioselective Addition of Diethylzinc to Aldehyde. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Seock Yong Kang
- Department of Chemistry; Konkuk University; Seoul 143-701 Korea
| | - Yong Sun Park
- Department of Chemistry; Konkuk University; Seoul 143-701 Korea
| |
Collapse
|
64
|
Kong J, McLaughlin M, Belyk K, Mondschein R. Enantioselective Rh(I)-Catalyzed Addition of Arylboronic Acids to Cyclic Ketimines. Org Lett 2015; 17:5520-3. [DOI: 10.1021/acs.orglett.5b02032] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Jongrock Kong
- Process Chemistry, Merck Research Laboratories, P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Mark McLaughlin
- Process Chemistry, Merck Research Laboratories, P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Kevin Belyk
- Process Chemistry, Merck Research Laboratories, P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Ryan Mondschein
- Process Chemistry, Merck Research Laboratories, P.O. Box 2000, Rahway, New Jersey 07065, United States
| |
Collapse
|
65
|
Karmakar R, Suneja A, Bisai V, Singh VK. Ni(II)-Catalyzed Highly Stereo- and Regioselective Syntheses of Isoindolinones and Isoquinolinones from in Situ Prepared Aldimines Triggered by Homoallylation/Lactamization Cascade. Org Lett 2015; 17:5650-3. [PMID: 26517732 DOI: 10.1021/acs.orglett.5b02932] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient route to isoindolinones and isoquinolinones has been achieved via a domino Ni-catalyzed homoallylation/lactamization from in situ prepared imines, derived from o-formyl benzoates and o-formyl arylacetates, with conjugated dienes promoted by diethylzinc. The reaction proceeds smoothly at room temperature for a variety of aldehydes, amines, and dienes. The method involves one C-C and two C-N bond forming events under operationally simple conditions.
Collapse
Affiliation(s)
- Raju Karmakar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Arun Suneja
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Vishnumaya Bisai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Vinod K Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India.,Indian Institute of Technology Kanpur, Kanpur - 208 016, Uttar Pradesh, India
| |
Collapse
|
66
|
Abstract
The carbon-nitrogen double bonds in imines are fundamentally important functional groups in organic chemistry. This is largely due to the fact that imines act as electrophiles towards carbon nucleophiles in reactions that form carbon-carbon bonds, thereby serving as one of the most widely used precursors for the formation of amines in both synthetic and biosynthetic settings. If the carbon atom of the imine could be rendered electron-rich, the imine could react as a nucleophile instead of as an electrophile. Such a reversal in the electronic characteristics of the imine functionality would facilitate the development of new chemical transformations that convert imines into amines via carbon-carbon bond-forming reactions with carbon electrophiles, thereby creating new opportunities for the efficient synthesis of amines. The development of asymmetric umpolung reactions of imines (in which the imines act as nucleophiles) remains uncharted territory, in spite of the far-reaching impact such reactions would have in organic synthesis. Here we report the discovery and development of new chiral phase-transfer catalysts that promote the highly efficient asymmetric umpolung reactions of imines with the carbon electrophile enals. These catalysts mediate the deprotonation of imines and direct the 2-azaallyl anions thus formed to react with enals in a highly chemoselective, regioselective, diastereoselective and enantioselective fashion. The reaction tolerates a broad range of imines and enals, and can be carried out in high yield with as little as 0.01 mole per cent catalyst with a moisture- and air-tolerant operational protocol. These umpolung reactions provide a conceptually new and practical approach to chiral amino compounds.
Collapse
Affiliation(s)
- Yongwei Wu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA
| | - Lin Hu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA
| | - Zhe Li
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA
| | - Li Deng
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, USA
| |
Collapse
|
67
|
Cao D, Zhang J, Wang H, Zhao G. Dipeptide-Derived Multifunctional Quaternary Phosphonium Salt Catalyzed Asymmetric Cyclizations via a Tandem Michael Addition/SN2 Sequence. Chemistry 2015; 21:9998-10002. [DOI: 10.1002/chem.201501806] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Indexed: 12/17/2022]
|
68
|
Kumar V, Klimovica K, Rasina D, Jirgensons A. 2-Vinyl Threoninol Derivatives via Acid-Catalyzed Allylic Substitution of Bisimidates. J Org Chem 2015; 80:5934-43. [PMID: 25941908 DOI: 10.1021/acs.joc.5b00529] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A diastereoselective synthesis of 4-vinyl oxazolines syn-2 was developed based on an acid-catalyzed cyclization of bistrichloroacetimidates (E)-1. The reaction likely involves an allyl carbenium ion intermediate in which the adjacent stereocenter directs the stereoselectivity for C-N bond formation. Oxazolines syn-2 were transformed to C-quaternary threoninol, threoninal, and threonine derivatives which can be further incorporated into complex natural compounds.
Collapse
Affiliation(s)
- Varun Kumar
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
| | - Kristine Klimovica
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
| | - Dace Rasina
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
| | - Aigars Jirgensons
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga, Latvia LV 1006
| |
Collapse
|
69
|
Dhanasekaran S, Kayet A, Suneja A, Bisai V, Singh VK. Unified Approach to Isoindolinones and THIQs via Lewis Acid Catalyzed Domino Mukaiyama–Mannich Lactamization/Alkylations: Application in the Synthesis of (±)-Homolaudanosine. Org Lett 2015; 17:2780-3. [DOI: 10.1021/acs.orglett.5b01197] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Anirban Kayet
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal, MP 462 066, India
| | - Arun Suneja
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal, MP 462 066, India
| | - Vishnumaya Bisai
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal, MP 462 066, India
| | - Vinod K. Singh
- Department
of Chemistry, Indian Institute of Science Education and Research, Bhopal, MP 462 066, India
- Department
of Chemistry, Indian Institute of Technology, Kanpur, UP 208 016, India
| |
Collapse
|
70
|
Bisai V, Unhale RA, Suneja A, Dhanasekaran S, Singh VK. An Efficient Entry to syn- and anti-Selective Isoindolinones via an Organocatalytic Direct Mannich/Lactamization Sequence. Org Lett 2015; 17:2102-5. [DOI: 10.1021/acs.orglett.5b00676] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vishnumaya Bisai
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
| | - Rajshekhar A. Unhale
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
| | - Arun Suneja
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
| | | | - Vinod K. Singh
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, MP - 462 066, India
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur, UP - 208 016, India
| |
Collapse
|
71
|
Wu M, Cheng T, Ji M, Liu G. Ru-Catalyzed Asymmetric Transfer Hydrogenation of α-Trifluoromethylimines. J Org Chem 2015; 80:3708-13. [DOI: 10.1021/acs.joc.5b00177] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Meng Wu
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Tanyu Cheng
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Min Ji
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Guohua Liu
- Key Laboratory
of Resource
Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare
Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| |
Collapse
|
72
|
Wu L, Liu RR, Zhang G, Wang DJ, Wu H, Gao J, Jia YX. Enantioselective Construction of Cyclic Indolyl α-Amino Estersviaa Friedel-Crafts Alkylation Reaction. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400987] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
73
|
Majer SH, Tanski JM. Synthesis and crystal structure of a novel prochiral ketoimine: ( E)-acetophenone O-diphenylphosphoryl oxime. Acta Crystallogr C 2015; 71:181-4. [DOI: 10.1107/s2053229615002351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 02/04/2015] [Indexed: 11/10/2022] Open
Abstract
A novel activated prochiral ketoimine, (E)-acetophenoneO-diphenylphosphoryl oxime, C20H18NO2P, with an electron-withdrawing substituent on the imine N atom similar to other prochiral ketoimines, has been synthesized and the X-ray crystal stucture determined. The molecules pack together in the solid stateviaweak intermolecular C—H...O interactions and both face-to-face and edge-to-face π-stacking interactions.
Collapse
|
74
|
Nakamura S, Sano M, Toda A, Nakane D, Masuda H. Organocatalytic Enantioselective Decarboxylative Reaction of Malonic Acid Half Thioesters with CyclicN-Sulfonyl Ketimines by UsingN-Heteroarenesulfonyl Cinchona Alkaloid Amides. Chemistry 2015; 21:3929-32. [DOI: 10.1002/chem.201406270] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Indexed: 11/09/2022]
|
75
|
Quan M, Yang G, Xie F, Gridnev ID, Zhang W. Pd(ii)-catalyzed asymmetric addition of arylboronic acids to cyclic N-sulfonyl ketimine esters and a DFT study of its mechanism. Org Chem Front 2015. [DOI: 10.1039/c4qo00347k] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient palladium-catalyzed asymmetric arylation of cyclic ketimine esters is developed, which provides the desired product in up to 99% yield with up to 99% ee. The mechanism of enantioselection is studied using DFT calculation.
Collapse
Affiliation(s)
- Mao Quan
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Guoqiang Yang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Fang Xie
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Ilya D. Gridnev
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Aoba-ku
- Japan
| | - Wanbin Zhang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| |
Collapse
|
76
|
Takechi R, Nishimura T. Rhodium-catalyzed asymmetric addition of arylboronic acids to cyclic N-sulfonyl ketimines towards the synthesis of α,α-diaryl-α-amino acid derivatives. Org Biomol Chem 2015; 13:4918-24. [DOI: 10.1039/c5ob00431d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rhodium/chiral diene complex-catalyzed asymmetric addition of arylboronic acids to cyclic ketimines having an ester group proceeded to give the corresponding α-amino acid derivatives in high yields with high enantioselectivity.
Collapse
Affiliation(s)
- Ryosuke Takechi
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| | - Takahiro Nishimura
- Department of Chemistry
- Graduate School of Science
- Kyoto University
- Sakyo
- Japan
| |
Collapse
|
77
|
Metz AE, Kozlowski MC. Recent Advances in Asymmetric Catalytic Methods for the Formation of Acyclic α,α-Disubstituted α-Amino Acids. J Org Chem 2014; 80:1-7. [DOI: 10.1021/jo502408z] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Alison E. Metz
- Department of Chemistry,
Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marisa C. Kozlowski
- Department of Chemistry,
Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
78
|
Dhanasekaran S, Bisai V, Unhale RA, Suneja A, Singh VK. A General Catalytic Route to Isoindolinones and Tetrahydroisoquinolines: Application in the Synthesis of (±)-Crispine A. Org Lett 2014; 16:6068-71. [DOI: 10.1021/ol502842f] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Vishnumaya Bisai
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal-462 066, MP, India
| | - Rajshekhar A. Unhale
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal-462 066, MP, India
| | - Arun Suneja
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal-462 066, MP, India
| | - Vinod K. Singh
- Department
of Chemistry, Indian Institute of Technology Kanpur-208 016, UP, India
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal-462 066, MP, India
| |
Collapse
|
79
|
Bera K, Namboothiri INN. Asymmetric Synthesis of Quaternary α-Amino Acids and Their Phosphonate Analogues. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402178] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
80
|
Bao Y, Kumagai N, Shibasaki M. Design and synthesis of a bis(hydroxyphenyl)diamide bearing a pendant thiazolium unit; application to the catalytic asymmetric intramolecular Stetter reaction. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.09.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
81
|
Bisai V, Suneja A, Singh VK. Asymmetric Alkynylation/Lactamization Cascade: An Expeditious Entry to Enantiomerically Enriched Isoindolinones. Angew Chem Int Ed Engl 2014; 53:10737-41. [DOI: 10.1002/anie.201405074] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/23/2014] [Indexed: 11/11/2022]
|
82
|
Bisai V, Suneja A, Singh VK. Asymmetric Alkynylation/Lactamization Cascade: An Expeditious Entry to Enantiomerically Enriched Isoindolinones. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405074] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
83
|
Wang H, Li Y, Xu MH. Rhodium-Catalyzed Highly Enantioselective Arylation of Cyclic Diketimines: Efficient Synthesis of Chiral Tetrasubstituted 1,2,5-Thiadiazoline 1,1-Dioxides. Org Lett 2014; 16:3962-5. [DOI: 10.1021/ol501770q] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hui Wang
- State key Laboratory of Drug
Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Yi Li
- State key Laboratory of Drug
Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Ming-Hua Xu
- State key Laboratory of Drug
Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| |
Collapse
|
84
|
Hirner S, Kolb A, Westmeier J, Gebhardt S, Middel S, Harms K, von Zezschwitz P. Rhodium-Catalyzed Enantioselective Addition of Organoaluminum Reagents to N-Tosyl Ketimines. Org Lett 2014; 16:3162-5. [DOI: 10.1021/ol501372u] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sebastian Hirner
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| | - Andreas Kolb
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| | - Johannes Westmeier
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| | - Sandra Gebhardt
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| | - Stephen Middel
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| | - Klaus Harms
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| | - Paultheo von Zezschwitz
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032 Marburg, Germany
| |
Collapse
|
85
|
Curto JM, Dickstein JS, Berritt S, Kozlowski MC. Asymmetric synthesis of α-allyl-α-aryl α-amino acids by tandem alkylation/π-allylation of α-iminoesters. Org Lett 2014; 16:1948-51. [PMID: 24666394 PMCID: PMC3983326 DOI: 10.1021/ol500506t] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
![]()
The
first asymmetric synthesis of α-allyl-α-aryl α-amino
acids by means of a three-component coupling of α-iminoesters,
Grignard reagents, and cinnamyl acetate is reported. Notably, the
enolate from the tandem process provides a much higher level of reactivity
and selectivity than the same enolate generated via direct deprotonation,
presumably due to differences in the solvation/aggregation state.
A novel method for removal of a homoallylic amine protecting group
delivers the free amine congeners. The α-allyl group offers
a means to generate further valuable α-amino acid structures
as exemplified by ring closing metathesis to generate a higher ring
homologue of α-aryl-proline.
Collapse
Affiliation(s)
- John M Curto
- Department of Chemistry, Penn Merck High Throughput Experimentation Laboratory, University of Pennsylvania , Philadelphia, Pennsylvania 19104-6323, United States
| | | | | | | |
Collapse
|
86
|
Wang YH, Liu YL, Cao ZY, Zhou J. An Organocatalytic Addition of Nitromethane to Activated Ketimines. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300289] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
87
|
Zhao Y, Gilbertson SR. Synthesis of Proline-Based N-Heterocyclic Carbene Ligands. Org Lett 2014; 16:1033-5. [DOI: 10.1021/ol403465d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yang Zhao
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| | - Scott R. Gilbertson
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
| |
Collapse
|
88
|
Charette AB, Lindsay V. Stereoselective formation of amines by nucleophilic addition to azomethine derivatives. Top Curr Chem (Cham) 2014; 343:33-73. [PMID: 24233253 DOI: 10.1007/128_2013_492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This chapter describes state-of-the-art methods to prepare α-chiral amines by the addition of nonstabilized nucleophiles to imine derivatives. The first part of the chapter illustrates the most effective diastereoselective addition reaction (substrate controlled and chiral auxiliary based methods) whereas the second part focuses on catalytic asymmetric methods.
Collapse
|
89
|
Deutsch A, Glas H, Hoffmann-Röder A, Deutsch C. Synthesis of functionalized α-trifluoroethyl amine scaffolds via Grignard addition to N-aryl hemiaminal ethers. RSC Adv 2014. [DOI: 10.1039/c3ra47708h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
90
|
Wang XB, Li TZ, Sha F, Wu XY. Enantioselective Squaramide-Catalysed Domino Mannich-Cyclization Reaction of Isatin Imines. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301350] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
91
|
Cruz‐Acosta F, de Armas P, García‐Tellado F. Water‐Compatible Hydrogen‐Bond Activation: A Scalable and Organocatalytic Model for the Stereoselective Multicomponent Aza‐Henry Reaction. Chemistry 2013; 19:16550-4. [DOI: 10.1002/chem.201303448] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Fabio Cruz‐Acosta
- Departamento de Química Biológica y Biotecnología, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones, Científicas Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife (Spain), Fax: (+34) 922260135 https://www.ipna.csic.es/dept/qbb/qob/
| | - Pedro de Armas
- Departamento de Química Biológica y Biotecnología, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones, Científicas Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife (Spain), Fax: (+34) 922260135 https://www.ipna.csic.es/dept/qbb/qob/
| | - Fernando García‐Tellado
- Departamento de Química Biológica y Biotecnología, Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones, Científicas Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife (Spain), Fax: (+34) 922260135 https://www.ipna.csic.es/dept/qbb/qob/
| |
Collapse
|
92
|
|
93
|
Grellepois F, Ben Jamaa A, Gassama A. Diastereoselective Addition of Organomagnesium and Organolithium Reagents to Chiral TrifluoromethylN-tert-Butanesulfinyl Hemiaminals. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300890] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
94
|
Huang G, Yin Z, Zhang X. Construction of Optically Active Quaternary Propargyl Amines by Highly Enantioselective Zinc/BINOL-Catalyzed Alkynylation of Ketoimines. Chemistry 2013; 19:11992-8. [DOI: 10.1002/chem.201301479] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 11/10/2022]
|
95
|
Liu M, Li J, Xiao X, Xie Y, Shi Y. An efficient synthesis of optically active trifluoromethyl aldimines via asymmetric biomimetic transamination. Chem Commun (Camb) 2013; 49:1404-6. [PMID: 23323269 DOI: 10.1039/c2cc37423d] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This communication describes a chiral base-catalyzed asymmetric [1,3]-proton shift of trifluoromethyl ketimines, giving a wide variety of trifluoromethyl aldimines containing various functional groups with up to 94% ee.
Collapse
Affiliation(s)
- Mao Liu
- Beijing National Laboratory of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | | | | | | | | |
Collapse
|
96
|
Yang G, Zhang W. A Palladium-Catalyzed Enantioselective Addition of Arylboronic Acids to Cyclic Ketimines. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302861] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
97
|
A Palladium-Catalyzed Enantioselective Addition of Arylboronic Acids to Cyclic Ketimines. Angew Chem Int Ed Engl 2013; 52:7540-4. [DOI: 10.1002/anie.201302861] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Indexed: 11/07/2022]
|
98
|
Yao Y, Li JL, Zhou QQ, Dong L, Chen YC. Enantioselective aza-Morita-Baylis-Hillman reaction with ketimines and acrolein catalyzed by organic assemblies. Chemistry 2013; 19:9447-51. [PMID: 23740616 DOI: 10.1002/chem.201301558] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Indexed: 02/05/2023]
Affiliation(s)
- Yuan Yao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education, West China School of Pharmacy and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | | | | | | | | |
Collapse
|
99
|
Yin L, Otsuka Y, Takada H, Mouri S, Yazaki R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Alkynylation of Ketoimines. Org Lett 2013; 15:698-701. [DOI: 10.1021/ol3035609] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Liang Yin
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Yasunari Otsuka
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Hisashi Takada
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Shinsuke Mouri
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Ryo Yazaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Naoya Kumagai
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan, and JST, ACT-C, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| |
Collapse
|
100
|
Wang H, Jiang T, Xu MH. Simple Branched Sulfur–Olefins as Chiral Ligands for Rh-Catalyzed Asymmetric Arylation of Cyclic Ketimines: Highly Enantioselective Construction of Tetrasubstituted Carbon Stereocenters. J Am Chem Soc 2013; 135:971-4. [DOI: 10.1021/ja3110818] [Citation(s) in RCA: 208] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Hui Wang
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai
201203, China
| | - Tao Jiang
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai
201203, China
| | - Ming-Hua Xu
- Shanghai
Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai
201203, China
| |
Collapse
|