1
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Wei J, Du Z, Wang X, Ji C, Li L, You Y. Palladium-catalyzed enantioselective arylation of trichloro- or tri-/difluoroacetaldimine precursors. Chem Commun (Camb) 2024; 60:3303-3306. [PMID: 38426541 DOI: 10.1039/d4cc00022f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
A palladium-catalyzed asymmetric α-arylation of N-carbamoyl imine precursors containing CCl3, CF3 and CF2H is presented. This protocol provides facile access to a series of chiral α-aryl trichloroethylamines bearing various functional groups, with moderate to high yields (40-82% yield) and high enantioselectivity (80-99% ee).
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Affiliation(s)
- Jian Wei
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Zhongjian Du
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Xu Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Chenlei Ji
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
| | - Longji Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
- Department of Nuclear Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yang'en You
- School of Chemistry and Chemical Engineering, Hefei University of Technology and Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Hefei 230009, P. R. China.
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2
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Uchikura T, Aruga K, Suzuki R, Akiyama T. Enantioselective Friedel-Crafts Alkylation Reaction of Pyrroles with N-Unprotected Alkynyl Trifluoromethyl Ketimines. Org Lett 2022; 24:4699-4703. [PMID: 35728276 DOI: 10.1021/acs.orglett.2c01972] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Developed herein is an enantioselective Friedel-Crafts alkylation reaction of N-unprotected alkynyl trifluoromethyl ketimines with pyrroles catalyzed by chiral phosphoric acid to furnish chiral primary α-trifluoromethyl-α-(2-pyrrolyl)propargylamines with high enantioselectivity. Transformation of the alkynyl group of the adducts afforded optically active α-trifluoromethylated amines bearing various substituents such as alkyl, alkenyl, enyne, and triazole without loss of optical purity.
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Affiliation(s)
- Tatsuhiro Uchikura
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Kureha Aruga
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Riku Suzuki
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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3
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Egorov IN, Santra S, Zyryanov GV, Majee A, Hajra A, Chupakhin ON. Direct Asymmetric Addition of Heteroatom Nucleophiles to Imines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ilya N. Egorov
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University Mira St. 19 Ekaterinburg 620002 Russian Federation
| | - Sougata Santra
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University Mira St. 19 Ekaterinburg 620002 Russian Federation
| | - Grigory V. Zyryanov
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University Mira St. 19 Ekaterinburg 620002 Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Division) 22/20, S. Kovalevskoy/Akademicheskaya St. 620990 Yekaterinburg Russian Federation
| | - Adinath Majee
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Alakananda Hajra
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Oleg N. Chupakhin
- Department of Organic & Biomolecular Chemistry Chemical Engineering Institute Ural Federal University Mira St. 19 Ekaterinburg 620002 Russian Federation
- Postovsky Institute of Organic Synthesis of RAS (Ural Division) 22/20, S. Kovalevskoy/Akademicheskaya St. 620990 Yekaterinburg Russian Federation
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4
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Lupidi G, Palmieri A, Petrini M. Enantioselective Catalyzed Synthesis of Amino Derivatives Using Electrophilic Open‐Chain
N
‐Activated Ketimines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100292] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gabriele Lupidi
- School of Science and Technology, Chemistry Division Università di Camerino via S.Agostino, 1 I-62032 Camerino Italy
| | - Alessandro Palmieri
- School of Science and Technology, Chemistry Division Università di Camerino via S.Agostino, 1 I-62032 Camerino Italy
| | - Marino Petrini
- School of Science and Technology, Chemistry Division Università di Camerino via S.Agostino, 1 I-62032 Camerino Italy
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5
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Onyeagusi CI, Malcolmson SJ. Strategies for the Catalytic Enantioselective Synthesis of α-Trifluoromethyl Amines. ACS Catal 2020; 10:12507-12536. [PMID: 34306806 PMCID: PMC8302206 DOI: 10.1021/acscatal.0c03569] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The exploitation of the α-trifluoromethylamino group as an amide surrogate in peptidomimetics and drug candidates has been on the rise. In a large number of these cases, this moiety bears stereochemistry with the stereochemical identity having important consequences on numerous molecular properties, such as the potency of the compound. Yet, the majority of stereoselective syntheses of α-CF3 amines rely on diastereoselective couplings with chiral reagents. Concurrent with the rapid expansion of fluorine into pharmaceuticals has been the development of catalytic enantioselective means of preparing α-trifluoromethyl amines. In this work, we outline the strategies that have been employed for accessing these enantioenriched amines, including normal polarity approaches and several recent developments in imine umpolung transformations.
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Affiliation(s)
- Chibueze I Onyeagusi
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Steven J Malcolmson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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6
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Zawodny W, Teskey CJ, Mishevska M, Völkl M, Maryasin B, González L, Maulide N. α‐Funktionalisierung von Ketonen durch metallfreie elektrophile Aktivierung. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Wojciech Zawodny
- Institut für organische Chemie Universität Wien Währinger Straße 38 1090 Wien Österreich
| | - Christopher J. Teskey
- Institut für organische Chemie Universität Wien Währinger Straße 38 1090 Wien Österreich
| | - Magdalena Mishevska
- Institut für organische Chemie Universität Wien Währinger Straße 38 1090 Wien Österreich
| | - Martin Völkl
- Institut für organische Chemie Universität Wien Währinger Straße 38 1090 Wien Österreich
| | - Boris Maryasin
- Institut für organische Chemie Universität Wien Währinger Straße 38 1090 Wien Österreich
- Institut für theoretische Chemie Universität Wien Währinger Straße 17 1090 Wien Österreich
| | - Leticia González
- Institut für theoretische Chemie Universität Wien Währinger Straße 17 1090 Wien Österreich
| | - Nuno Maulide
- Institut für organische Chemie Universität Wien Währinger Straße 38 1090 Wien Österreich
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7
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Zawodny W, Teskey CJ, Mishevska M, Völkl M, Maryasin B, González L, Maulide N. α-Functionalisation of Ketones Through Metal-Free Electrophilic Activation. Angew Chem Int Ed Engl 2020; 59:20935-20939. [PMID: 32914929 PMCID: PMC7693173 DOI: 10.1002/anie.202006398] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Indexed: 01/08/2023]
Abstract
Triflic anhydride mediated activation of acetophenones leads to highly electrophilic intermediates that can undergo a variety of transformations when treated with nucleophiles. This electrophilic ketone activation gives access to α‐arylated and α‐oxyaminated acetophenones under metal‐free conditions in moderate to excellent yields and enables extension to the synthesis of arylated morpholines via generation of vinylsulfonium salts. Computational investigations confirmed the transient existence of intermediates derived from vinyl triflates and the role of the oxygen atoms at the para position of aromatic ring in facilitating their stabilisation.
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Affiliation(s)
- Wojciech Zawodny
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Christopher J Teskey
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Magdalena Mishevska
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Martin Völkl
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Boris Maryasin
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria.,Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria
| | - Leticia González
- Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
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8
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Uchikura T, Suzuki R, Suda Y, Akiyama T. Enantioselective Synthesis of 2‐Substituted Indoles Bearing Trifluoromethyl Moiety by the Friedel‐Crafts Alkylation Reaction of 4,7‐Dihydroindole with
N
−H Trifluoromethyl Ketimines. ChemCatChem 2020. [DOI: 10.1002/cctc.202000920] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tatsuhiro Uchikura
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
| | - Riku Suzuki
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
| | - Yusuke Suda
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
| | - Takahiko Akiyama
- Department of Chemistry Gakushuin University 1-5-1 Mejiro Toshima-ku, Tokyo Japan
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9
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Fager DC, Morrison RJ, Hoveyda AH. Regio- and Enantioselective Synthesis of Trifluoromethyl-Substituted Homoallylic α-Tertiary NH 2 -Amines by Reactions Facilitated by a Threonine-Based Boron-Containing Catalyst. Angew Chem Int Ed Engl 2020; 59:11448-11455. [PMID: 32219997 DOI: 10.1002/anie.202001184] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/25/2020] [Indexed: 12/20/2022]
Abstract
A method for catalytic regio- and enantioselective synthesis of trifluoromethyl-substituted and aryl-, heteroaryl-, alkenyl-, and alkynyl-substituted homoallylic α-tertiary NH2 -amines is introduced. Easy-to-synthesize and robust N-silyl ketimines are converted to NH-ketimines in situ, which then react with a Z-allyl boronate. Transformations are promoted by a readily accessible l-threonine-derived aminophenol-based boryl catalyst, affording the desired products in up to 91 % yield, >98:2 α:γ selectivity, >98:2 Z:E selectivity, and >99:1 enantiomeric ratio. A commercially available aminophenol may be used, and allyl boronates, which may contain an alkyl-, a chloro-, or a bromo-substituted Z-alkene, can either be purchased or prepared by catalytic stereoretentive cross-metathesis. What is more, Z-trisubstituted allyl boronates may be used. Various chemo-, regio-, and diastereoselective transformations of the α-tertiary homoallylic NH2 -amine products highlight the utility of the approach; this includes diastereo- and regioselective epoxide formation/trichloroacetic acid cleavage to generate differentiated diol derivatives.
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Affiliation(s)
- Diana C Fager
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA
| | - Ryan J Morrison
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA
- Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, 67000, Strasbourg, France
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10
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Fager DC, Morrison RJ, Hoveyda AH. Regio‐ and Enantioselective Synthesis of Trifluoromethyl‐Substituted Homoallylic α‐Tertiary NH
2
‐Amines by Reactions Facilitated by a Threonine‐Based Boron‐Containing Catalyst. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Diana C. Fager
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
| | - Ryan J. Morrison
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
| | - Amir H. Hoveyda
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
- Supramolecular Science and Engineering Institute University of Strasbourg CNRS 67000 Strasbourg France
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11
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Shen C, Wang RQ, Wei L, Wang ZF, Tao HY, Wang CJ. Catalytic Asymmetric Umpolung Allylation/2-Aza-Cope Rearrangement for the Construction of α-Tetrasubstituted α-Trifluoromethyl Homoallylic Amines. Org Lett 2019; 21:6940-6945. [DOI: 10.1021/acs.orglett.9b02543] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chong Shen
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Ruo-Qing Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Liang Wei
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zuo-Fei Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Hai-Yan Tao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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12
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Shi LM, Sun XS, Shen C, Wang ZF, Tao HY, Wang CJ. Catalytic Asymmetric Synthesis of α-Trifluoromethyl Homoallylic Amines via Umpolung Allylation/2-Aza-Cope Rearrangement: Stereoselectivity and Mechanistic Insight. Org Lett 2019; 21:4842-4848. [DOI: 10.1021/acs.orglett.9b01738] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Li-Min Shi
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xi-Shang Sun
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chong Shen
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Zuo-Fei Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Hai-Yan Tao
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Chun-Jiang Wang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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13
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Takata T, Hirano K, Miura M. Synthesis of α-Trifluoromethylamines by Cu-Catalyzed Regio- and Enantioselective Hydroamination of 1-Trifluoromethylalkenes. Org Lett 2019; 21:4284-4288. [DOI: 10.1021/acs.orglett.9b01471] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Tatsuaki Takata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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14
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Miyagawa M, Yoshida M, Kiyota Y, Akiyama T. Enantioselective Friedel–Crafts Alkylation Reaction of Heteroarenes with N‐Unprotected Trifluoromethyl Ketimines by Means of Chiral Phosphoric Acid. Chemistry 2019; 25:5677-5681. [DOI: 10.1002/chem.201901020] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Indexed: 02/04/2023]
Affiliation(s)
- Masamichi Miyagawa
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
| | - Masaru Yoshida
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
| | - Yuki Kiyota
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
| | - Takahiko Akiyama
- Department of ChemistryFaculty of ScienceGakushuin University, Mejiro Toshima-ku Tokyo 171-8588 Japan
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15
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Neouchy Z, Gomez Pardo D, Cossy J. Synthesis of Optically Active α-Trifluoromethylamines by Rearrangement of β-Amino-α-trifluoromethyl Alcohols. Org Lett 2018; 20:6017-6021. [PMID: 30216084 DOI: 10.1021/acs.orglett.8b02353] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of various optically active α-trifluoromethylamines has been realized from β-amino-α-trifluoromethyl alcohols via an aziridinium ion intermediate under kinetic conditions.
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Affiliation(s)
- Zeina Neouchy
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI) , ESPCI Paris/CNRS/PSL University , 10 rue Vauquelin , 75231 Cedex 05 Paris , France
| | - Domingo Gomez Pardo
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI) , ESPCI Paris/CNRS/PSL University , 10 rue Vauquelin , 75231 Cedex 05 Paris , France
| | - Janine Cossy
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI) , ESPCI Paris/CNRS/PSL University , 10 rue Vauquelin , 75231 Cedex 05 Paris , France
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16
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Girish YR, Biswas R, De M. Mixed-Phase 2D-MoS2
as an Effective Photocatalyst for Selective Aerobic Oxidative Coupling of Amines under Visible-Light Irradiation. Chemistry 2018; 24:13871-13878. [DOI: 10.1002/chem.201802468] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Yarabhally R. Girish
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
| | - Rohin Biswas
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
| | - Mrinmoy De
- Department of Organic Chemistry; Indian Institute of Science; Bangalore 560012 Karnataka India
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17
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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 2018; 55:13316-13320. [PMID: 27634055 DOI: 10.1002/anie.201607918] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Indexed: 12/17/2022]
Abstract
A novel phosphine-catalyzed, highly enantioselective umpolung addition of trifluoromethyl ketimines to Morita-Baylis-Hillman carbonates was developed and it provides facile access to optically active trifluoromethyl amines with a chiral tertiary stereocenter under mild reaction conditions. The salient features of this reaction include general substrate scope, mild reaction conditions, good yields, high enantioselectivity, ease of scale-up to gram scale, and further transformations of the products.
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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.
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18
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Zhang Y, Nie J, Zhang FG, Ma JA. Zinc-mediated enantioselective addition of terminal 3-en-1-ynes to cyclic trifluoromethyl ketimines. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Chen W, Meng D, N'Zemba B, Morris WJ. Palladium-Catalyzed Enantioselective Synthesis of Cyclic Sulfamidates and Application to a Synthesis of Verubecestat. Org Lett 2018; 20:1265-1268. [PMID: 29461065 DOI: 10.1021/acs.orglett.7b03639] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An enantioselective arylation reaction catalyzed by palladium complexed with substituted phosphinooxazoline (PHOX) ligands is described. Aza-quaternary stereocenters are readily accessible through the arylation reaction between cyclic iminosulfates and a wide variety of arylboronic acids, including electron-poor and ortho-substituted arylboronic acids. This reaction was applied to the preparation of verubecestat, which is currently undergoing clinical evaluation for the treatment of Alzheimer's disease.
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Affiliation(s)
- Wenyong Chen
- Process Research & Development, Merck & Co., Inc. , Rahway, New Jersey 07065, United States
| | - Dongfang Meng
- Process Research & Development, Merck & Co., Inc. , Rahway, New Jersey 07065, United States
| | - Blaise N'Zemba
- Process Research & Development, Merck & Co., Inc. , Rahway, New Jersey 07065, United States
| | - William J Morris
- Process Research & Development, Merck & Co., Inc. , Rahway, New Jersey 07065, United States
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20
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Chitra G, Franklin D, Sudarsan S, Sakthivel M, Guhanathan S. Noncytotoxic silver and gold nanocomposite hydrogels with enhanced antibacterial and wound healing applications. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24824] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- G. Chitra
- Department of Chemistry; Periyar University; Salem Tamilnadu 636011 India
- Department of Chemistry, Bangalore College of Engineering and Technology; Chandapura; Bangalore 560081 India
| | - D.S. Franklin
- Department of Chemistry; C. Abdul Hakeem College of Engineering and Technology; Melvisharam Tamilnadu 632509 India
| | - S. Sudarsan
- Department of Chemistry; C. Abdul Hakeem College of Engineering and Technology; Melvisharam Tamilnadu 632509 India
| | - M. Sakthivel
- Research and Development Centre; Bharathiar University; Coimbatore 641046 India
| | - S. Guhanathan
- PG and Research Department of Chemistry; Muthurangam Government Arts College; Vellore Tamilnadu 632002 India
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21
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Meng SS, Tang WB, Zheng WH. Catalytically Enantioselective Synthesis of Acyclic α-Tertiary Amines through Desymmetrization of 2-Substituted 2-Nitro-1,3-diols. Org Lett 2018; 20:518-521. [DOI: 10.1021/acs.orglett.7b03581] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shan-Shui Meng
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
| | - Wu-Bang Tang
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
| | - Wen-Hua Zheng
- State Key Laboratory of Coordination
Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School
of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin
Avenue, Nanjing, Jiangsu 210023, China
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22
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Wu LL, Zeng QQ, Yang YX, Hu HF, Guan Z, He YH. Earthworm extract as a biocatalyst for asymmetric Mannich addition of cyclic ketimine 3-aryl-2H-1,4-benzoxazines. BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2017.1349116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ling-Ling Wu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Qing-Qing Zeng
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Ya-Xuan Yang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Hong-Feng Hu
- School of Life Science, Southwest University, Chongqing, PR China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, PR China
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23
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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.
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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
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24
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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
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25
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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.
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26
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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
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27
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Affiliation(s)
- Yi-Yong Huang
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Chen Cai
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Xing Yang
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Zong-Chao Lv
- Department
of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Uwe Schneider
- EaStCHEM
School of Chemistry, The University of Edinburgh, The King’s Buildings, David
Brewster Road, Edinburgh EH9 3FJ, United Kingdom
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28
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Johnson T, Luo B, Lautens M. Palladium(II)-Catalyzed Enantioselective Synthesis of α-(Trifluoromethyl)arylmethylamines. J Org Chem 2016; 81:4923-30. [DOI: 10.1021/acs.joc.6b00657] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Thomas Johnson
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Bo Luo
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Mark Lautens
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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29
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Deutsch A, Wagner C, Deutsch C, Hoffmann-Röder A. Convenient Access to Di- and Trifluoroethylamines for Lead Structure Research. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501576] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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30
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Affiliation(s)
- Lin Zhang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jinhuan Dong
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xianxiu Xu
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Qun Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
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31
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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.
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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
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32
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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.
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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
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33
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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
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34
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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]
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35
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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.
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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
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36
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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.
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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
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37
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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
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38
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Chen YJ, Chen YH, Feng CG, Lin GQ. Enantioselective Rhodium-Catalyzed Arylation of Cyclic N-Sulfamidate Alkylketimines: A New Access to Chiral β-Alkyl-β-aryl Amino Alcohols. Org Lett 2014; 16:3400-3. [DOI: 10.1021/ol501464e] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ya-Jing Chen
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
| | - Ya-Heng Chen
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
| | - Chen-Guo Feng
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
| | - Guo-Qiang Lin
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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39
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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
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40
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Xie JB, Luo J, Winn TR, Cordes DB, Li G. Group-assisted purification (GAP) chemistry for the synthesis of Velcade via asymmetric borylation of N-phosphinylimines. Beilstein J Org Chem 2014; 10:746-51. [PMID: 24778728 PMCID: PMC3999766 DOI: 10.3762/bjoc.10.69] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 03/12/2014] [Indexed: 11/23/2022] Open
Abstract
A new approach to the anticancer drug Velcade was developed by performing asymmetric borylation of an imine anchored with a chiral N-phosphinyl auxiliary. Throughout the 7-step synthesis, especially in the imine’s synthesis and in the asymmetric borylation reactions, operations and work-up were conducted in simple and easy ways without any column chromatographic purification, which defines the GAP (group-assisted purification) chemistry concept. It was found that the optically pure isomer (dr > 99:1) can be readily obtained by washing the crude mixture of the asymmetric borylation reaction with hexane; the chiral N-phosphinyl auxiliary can be easily recovered after deprotection is finished. Several other N-phosphinylimines were also investigated for the asymmetric borylation reaction. The absolute configuration of the borylation product was confirmed by single crystal X-ray diffraction analysis.
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Affiliation(s)
- Jian-Bo Xie
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Jian Luo
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Timothy R Winn
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - David B Cordes
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Guigen Li
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States ; Institute of Chemistry & BioMedical Sciences (ICBMS), Nanjing University, Nanjing 210093, P. R. China
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41
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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.
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42
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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
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43
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Huang W, Ye JL, Zheng W, Dong HQ, Wei BG. Radical migration-addition of N-tert-butanesulfinyl imines with organozinc reagents. J Org Chem 2013; 78:11229-37. [PMID: 24160561 DOI: 10.1021/jo401640c] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel migration-addition sequence was discovered for the reaction of enantioenriched N-tert-butanesulfinyl iminoacetate 1a with functionalized benzylzinc bromide reagents, producing tert-leucine derivatives in excellent diastereoselectivity (dr 98:2). The absolute configurations of two new chiral centers were unambiguously assigned by chemical transformations and X-ray crystallography. In addition, the regio- and diastereoselectivities of this novel reaction were both explained through the key N-sulfinamine intermediate M6 generated by the tert-butyl radical attack on the imine. Computational analysis of this reaction process, which was performed at the B3LYP/6-311++G(3df,2p)//B3LYP/6-31G*-LANL2DZ level, also supported our proposed two-stage mechanism.
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Affiliation(s)
- Wei Huang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University , 220 Handan Road, Shanghai 200433, China
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44
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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]
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45
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Johnson T, Lautens M. Palladium(II)-Catalyzed Enantioselective Synthesis of α-(Trifluoromethyl)arylmethylamines. Org Lett 2013; 15:4043-5. [DOI: 10.1021/ol401862g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Johnson
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Mark Lautens
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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46
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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]
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47
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Liu TL, Wang CJ, Zhang X. Synthesis of Chiral Aliphatic Amines through Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2013; 52:8416-9. [DOI: 10.1002/anie.201302943] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 05/23/2013] [Indexed: 11/06/2022]
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48
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Liu TL, Wang CJ, Zhang X. Synthesis of Chiral Aliphatic Amines through Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302943] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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49
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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.
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Affiliation(s)
- Mao Liu
- Beijing National Laboratory of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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50
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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]
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