1
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Pu L. Regioselective Substitution of BINOL. Chem Rev 2024; 124:6643-6689. [PMID: 38723152 PMCID: PMC11117191 DOI: 10.1021/acs.chemrev.4c00132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/09/2024] [Accepted: 04/11/2024] [Indexed: 05/23/2024]
Abstract
1,1'-Bi-2-naphthol (BINOL) has been extensively used as the chirality source in the fields of molecular recognition, asymmetric synthesis, and materials science. The direct electrophilic substitution at the aromatic rings of the optically active BINOL has been developed as one of the most convenient strategies to structurally modify BINOL for diverse applications. High regioselectivity has been achieved for the reaction of BINOL with electrophiles. Depending upon the reaction conditions and substitution patterns, various functional groups can be introduced to the specific positions, such as the 6-, 5-, 4-, and 3-positions, of BINOL. Ortho-lithiation at the 3-position directed by the functional groups at the 2-position of BINOL have been extensively used to prepare the 3- and 3,3'-substituted BINOLs. The use of transition metal-catalyzed C-H activation has also been explored to functionalize BINOL at the 3-, 4-, 5-, 6-, and 7-positions. These regioselective substitutions of BINOL have allowed the construction of tremendous amount of BINOL derivatives with fascinating structures and properties as reviewed in this article. Examples for the applications of the optically active BINOLs with varying substitutions in asymmetric catalysis, molecular recognition, chiral sensing and materials are also provided.
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Affiliation(s)
- Lin Pu
- Department of Chemistry, University
of Virginia, Charlottesville, Virginia 22904, United States
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2
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Budinská A, Wennemers H. Organocatalytic Synthesis of Triflones Bearing Two Non-Adjacent Stereogenic Centers. Angew Chem Int Ed Engl 2023; 62:e202300537. [PMID: 36847408 DOI: 10.1002/anie.202300537] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/07/2023] [Accepted: 02/27/2023] [Indexed: 03/01/2023]
Abstract
Trifluoromethylsulfones (triflones) are useful compounds for synthesis and beyond. Yet, methods to access chiral triflones are scarce. Here, we present a mild and efficient organocatalytic method for the stereoselective synthesis of chiral triflones using α-aryl vinyl triflones, building blocks previously unexplored in asymmetric synthesis. The peptide-catalyzed reaction gives rise to a broad range of γ-triflylaldehydes with two non-adjacent stereogenic centers in high yields and stereoselectivities. A catalyst-controlled stereoselective protonation following a C-C bond formation is key to control over the absolute and relative configuration. Straightforward derivatization of the products into, e.g., disubstituted δ-sultones, γ-lactones, and pyrrolidine heterocycles highlights the synthetic versatility of the products.
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Affiliation(s)
- Alena Budinská
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Helma Wennemers
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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3
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Tang X, Su Z, Lin Q, Lin L, Dong S, Feng X. Asymmetric catalytic α‐selective allylation of ketones with allyltrifluoroborates using dual‐functional chiral
In
III
/
N
,
N
′‐dioxide complex. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaoxue Tang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry Sichuan University Chengdu 610064 P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry Sichuan University Chengdu 610064 P. R. China
| | - Qianchi Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry Sichuan University Chengdu 610064 P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry Sichuan University Chengdu 610064 P. R. China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry Sichuan University Chengdu 610064 P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry Sichuan University Chengdu 610064 P. R. China
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4
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Liu Y, Bai S, Du Y, Qi X, Gao H. Expeditious and Efficient
ortho
‐Selective Trifluoromethane‐sulfonylation of Arylhydroxylamines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115611] [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)
- Yue Liu
- School of Chemistry and Chemical Engineering Shandong University 27 South Shanda Road Ji'nan 250100, Shandong China
| | - Songlin Bai
- National Institute of Biological Sciences Beijing 102206 China
- Tsinghua Institute of Multidisciplinary Biomedical Research Tsinghua University Beijing 100084 China
| | - Yuanbo Du
- School of Chemistry and Chemical Engineering Shandong University 27 South Shanda Road Ji'nan 250100, Shandong China
| | - Xiangbing Qi
- National Institute of Biological Sciences Beijing 102206 China
- Tsinghua Institute of Multidisciplinary Biomedical Research Tsinghua University Beijing 100084 China
| | - Hongyin Gao
- School of Chemistry and Chemical Engineering Shandong University 27 South Shanda Road Ji'nan 250100, Shandong China
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5
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Mouhtady O, Castellan T, André‐Barrès C, Gornitzka H, Fabing I, Saffon‐Merceron N, Génisson Y, Gaspard H. (
R
)‐BINOL‐6,6’‐bistriflone: Shortened Synthesis, Characterization, and Enantioselective Catalytic Applications. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101137] [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)
- Omar Mouhtady
- College of Engineering and Technology American University of the Middle East Kuwait
| | - Tessa Castellan
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique SPCMIB UMR 5068 CNRS/Université Paul Sabatier - Toulouse III 118 route de Narbonne Toulouse 31062 Cedex 9 France
| | - Christiane André‐Barrès
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique SPCMIB UMR 5068 CNRS/Université Paul Sabatier - Toulouse III 118 route de Narbonne Toulouse 31062 Cedex 9 France
| | - Heinz Gornitzka
- LCC-CNRS Université de Toulouse CNRS UPS Toulouse 31077 France
| | - Isabelle Fabing
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique SPCMIB UMR 5068 CNRS/Université Paul Sabatier - Toulouse III 118 route de Narbonne Toulouse 31062 Cedex 9 France
| | - Nathalie Saffon‐Merceron
- Institut de Chimie de Toulouse ICT FR 2599 CNRS/Université Paul Sabatier - Toulouse III Toulouse 31062 Cedex 9 France
| | - Yves Génisson
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique SPCMIB UMR 5068 CNRS/Université Paul Sabatier - Toulouse III 118 route de Narbonne Toulouse 31062 Cedex 9 France
| | - Hafida Gaspard
- Laboratoire de Synthèse et Physico-Chimie de Molécules d'Intérêt Biologique SPCMIB UMR 5068 CNRS/Université Paul Sabatier - Toulouse III 118 route de Narbonne Toulouse 31062 Cedex 9 France
- Laboratoire Hétérochimie Fondamentale et Appliquée LHFA UMR 5069 CNRS/Université Paul Sabatier - Toulouse III 118 route de Narbonne Toulouse 31062 Cedex 9 France
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6
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Liu Y, Bai S, Du Y, Qi X, Gao H. Expeditious and Efficient ortho-Selective Trifluoromethane-sulfonylation of Arylhydroxylamines. Angew Chem Int Ed Engl 2021; 61:e202115611. [PMID: 34904339 DOI: 10.1002/anie.202115611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Indexed: 12/14/2022]
Abstract
A metal- and oxidant-free, practical and efficient method for the synthesis of highly versatile and synthetically useful ortho-trifluoromethanesulfonylated anilines from arylhydroxylamines and trifluoromethanesulfinic chloride was developed. This rapid transformation proceeded smoothly with good yields and excellent ortho-selectivity in the absence of any metals or ligands. Mechanistically, the reaction comprised a noncanonical O-trifluoromethanesulfinylation of the arylhydroxylamine, and the subsequent [2,3]-sigmatropic rearrangement to afford ortho-trifluoromethanesulfonylated aniline derivatives. The practical application of this reaction was demonstrated by further conversion into a series of functional molecules under different reaction conditions.
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Affiliation(s)
- Yue Liu
- School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, 250100, Shandong, China
| | - Songlin Bai
- National Institute of Biological Sciences, Beijing, 102206, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Yuanbo Du
- School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, 250100, Shandong, China
| | - Xiangbing Qi
- National Institute of Biological Sciences, Beijing, 102206, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, 100084, China
| | - Hongyin Gao
- School of Chemistry and Chemical Engineering, Shandong University, 27 South Shanda Road, Ji'nan, 250100, Shandong, China
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7
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Dong G, Bao M, Xie X, Jia S, Hu W, Xu X. Asymmetric Allylation by Chiral Organocatalyst‐Promoted Formal Hetero‐Ene Reactions of Alkylgold Intermediates. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012678] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Guizhi Dong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Ming Bao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xiongda Xie
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Shikun Jia
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Wenhao Hu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xinfang Xu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
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8
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Dong G, Bao M, Xie X, Jia S, Hu W, Xu X. Asymmetric Allylation by Chiral Organocatalyst‐Promoted Formal Hetero‐Ene Reactions of Alkylgold Intermediates. Angew Chem Int Ed Engl 2020; 60:1992-1999. [DOI: 10.1002/anie.202012678] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 09/30/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Guizhi Dong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Ming Bao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xiongda Xie
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Shikun Jia
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Wenhao Hu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xinfang Xu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
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9
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Wang J, Shao Z, Tan K, Tang R, Zhou Q, Xu M, Li YM, Shen Y. Synthesis of Amino Acids by Base-Enhanced Photoredox Decarboxylative Alkylation of Aldimines. J Org Chem 2020; 85:9944-9954. [DOI: 10.1021/acs.joc.0c01246] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jiancheng Wang
- Center for Pharmaceutical Sciences and Engineering, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Ziyan Shao
- Center for Pharmaceutical Sciences and Engineering, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Kai Tan
- Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Rui Tang
- Center for Pharmaceutical Sciences and Engineering, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Qingli Zhou
- Center for Pharmaceutical Sciences and Engineering, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Min Xu
- Center for Pharmaceutical Sciences and Engineering, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Ya-Min Li
- Center for Pharmaceutical Sciences and Engineering, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Yuehai Shen
- Center for Pharmaceutical Sciences and Engineering, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
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10
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Flynn AJ, Ford A, Maguire AR. Synthetic and mechanistic aspects of sulfonyl migrations. Org Biomol Chem 2020; 18:2549-2610. [DOI: 10.1039/c9ob02587a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sulfonyl migrations, frequently described as ‘unusual’ or ‘unexpected’, from the last 20 years, including 1,2-, 1,3-, 1,4-, 1,5-, 1,6- and 1,7-sulfonyl shifts, through either radical or polar processes, either inter- or intramolecularly are reviewed.
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Affiliation(s)
- Aaran J. Flynn
- School of Chemistry
- Analytical and Biological Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Cork
| | - Alan Ford
- School of Chemistry
- Analytical and Biological Research Facility
- University College Cork
- Cork
- Ireland
| | - Anita R. Maguire
- School of Chemistry and School of Pharmacy
- Analytical and Biological Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Cork
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11
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Zhou X, Hu D, He X, Li Y, Chu Y, She Y. Practical and efficient synthesis of aryl trifluoromethyl sulfones from arylsulfonyl chlorides with Umemoto’s reagent II. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Tang R, Shao Z, Wang J, Liu Z, Li YM, Shen Y. Iron(II)-Catalyzed Radical Addition to Aldimines with Hantzsch Ester as a Two-Hydrogen Atom Donor. J Org Chem 2019; 84:8177-8184. [PMID: 31122013 DOI: 10.1021/acs.joc.9b01163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The first Fe(OTf)2-catalyzed radical addition to aldimines with Hantzsch ester as a two-hydrogen atom donor is reported. The tin-free reaction works well for electron-deficient substrates and provides a potentially useful approach to α-branched amines and α-amino acids.
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Affiliation(s)
- Rui Tang
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Ziyan Shao
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Jiancheng Wang
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Zhongxian Liu
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Ya-Min Li
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
| | - Yuehai Shen
- Faculty of Life Science and Technology , Kunming University of Science and Technology , Kunming 650500 , China
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13
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Korb M, Lang H. The anionic Fries rearrangement: a convenient route to ortho-functionalized aromatics. Chem Soc Rev 2019; 48:2829-2882. [DOI: 10.1039/c8cs00830b] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The scope and mechanism of anionic (hetero-) Fries rearrangements are summarized for various migrating groups and arenes, including applications and computational studies.
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Affiliation(s)
- Marcus Korb
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
| | - Heinrich Lang
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
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14
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Zhang H, Wang KH, Wang J, Su Y, Huang D, Hu Y. N-Arylations of trifluoromethylated N-acylhydrazones with diaryliodonium salts as arylation reagents. Org Biomol Chem 2019; 17:2940-2947. [DOI: 10.1039/c9ob00236g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and efficient N-arylation of trifluoromethylated N-acylhydrazones is described by using diaryliodonium salts as arylation reagents in the presence of copper salts. A wide variety of N-aryl acylhydrazones are obtained with good to excellent yields under mild reaction conditions.
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Affiliation(s)
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Junjiao Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
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15
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16
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Sumii Y, Sugita Y, Tokunaga E, Shibata N. Synthesis of Aryl Triflones through the Trifluoromethanesulfonylation of Benzynes. ChemistryOpen 2018; 7:204-211. [PMID: 29497592 PMCID: PMC5827650 DOI: 10.1002/open.201700204] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Indexed: 11/05/2022] Open
Abstract
The direct synthesis of aryl triflones, that is, trifluoromethanesulfonyl arenes, was achieved through the trifluoromethanesulfonylation of benzynes. The trifluoromethanesulfonyl group, one of the fluorinated functional groups, is a highly electron-negative and mild lipophilic substituent. Aryl triflones have high potential in the synthesis of bioactive compounds and specialty materials. The treatment of 2-(trimethylsilyl)aryl trifluoromethanesulfonates with cesium fluoride in the presence of 15-crown-5 generated benzynes, which reacted with sodium trifluoromethanesulfinate followed by protonation with tBuOH under heating conditions, provided aryl triflones in moderated to good yields. Both symmetrical and unsymmetrical triflones were nicely accessed under the same reaction conditions. Interestingly, the trifluoromethanesulfonylation of unsymmetrical benzyne precursors proceeded smoothly to furnish corresponding aryl triflones in good yields with good to high regioselectivities. The balance of polarization of electric charge as well as steric hindrance of the benzyne intermediates are central factors to control the outcome of regioselectivity.
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Affiliation(s)
- Yuji Sumii
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Yutaka Sugita
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences and Department of Life Science and Applied ChemistryNagoya Institute of TechnologyGokiso-cho, Showa-kuNagoya466–8555Japan
- Institute of Advanced Fluorine-Containing MaterialsZhejiang Normal University688 Yingbin Avenue321004JinhuaChina
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17
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Das P, Shibata N. Electrophilic Triflyl-arylation and Triflyl-pyridylation by Unsymmetrical Aryl/Pyridyl-λ 3-iodonium Salts: Synthesis of Aryl and Pyridyl Triflones. J Org Chem 2017; 82:11915-11924. [PMID: 28840726 DOI: 10.1021/acs.joc.7b01690] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Unsymmetrical diaryl-λ3-iodonium salts containing aryl triflone (Ar-SO2CF3) were designed and synthesized. X-ray crystal structure analysis of the salt indicated a T-shaped geometry at the iodine atom. The salts were found to be powerful electrophilic reagents for triflyl-arylation of C-, N-, and O-centered nucleophiles under mild conditions. Electrophilic transfer of pyridine triflone (Py-SO2CF3) to nucleophiles was also realized by the use of corresponding triflylpyridyl-aryl-λ3-iodonium salts. Selection of auxiliaries (dummy ligands) of unsymmetrical diaryl-λ3-iodonium salts is crucial for this transformation.
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Affiliation(s)
- Prajwalita Das
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
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18
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Peng X, Wang KH, Huang D, Wang J, Wang Y, Su Y, Hu Y, Fu Y. Tin powder-promoted diastereoselective allylation of chiral acylhydrazones. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiansha Peng
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Juanjuan Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Yalin Wang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Yingpeng Su
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
| | - Ying Fu
- College of Chemistry and Chemical Engineering; Northwest Normal University; Anning East Road No. 967 Lanzhou Gansu 730070 People's Republic of China
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19
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Jiang Y, Schaus SE. Asymmetric Petasis Borono-Mannich Allylation Reactions Catalyzed by Chiral Biphenols. Angew Chem Int Ed Engl 2017; 56:1544-1548. [PMID: 28052567 PMCID: PMC5716625 DOI: 10.1002/anie.201611332] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Indexed: 12/25/2022]
Abstract
Chiral biphenols catalyze the asymmetric Petasis borono-Mannich allylation of aldehydes and amines through the use of a bench-stable allyldioxaborolane. The reaction proceeds via a two-step, one-pot process and requires 2-8 mole % of 3,3'-Ph2 -BINOL as the optimal catalyst. Under microwave heating the reaction affords chiral homoallylic amines in excellent yields (up to 99 %) and high enantioselectivies (er up to 99:1). The catalytic reaction is a true multicomponent condensation reaction whereas both the aldehyde and the amine can possess a wide range of structural and electronic properties. Use of crotyldioxaborolane in the reaction results in stereodivergent products with anti- and syn-diastereomers both in good diastereoselectivities and enantioselectivities from the corresponding E- and Z-borolane stereoisomers.
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Affiliation(s)
- Yao Jiang
- Department of Chemistry, Center for Molecular Discovery, Boston University, 24 Cummington Mall, Boston, MA, 02215, USA
| | - Scott E Schaus
- Department of Chemistry, Center for Molecular Discovery, Boston University, 24 Cummington Mall, Boston, MA, 02215, USA
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20
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Lee WJ, Jeong W, Park J, Rhee YH. Zinc‐Mediated
syn
‐Selective Crotylation of N‐Unsubstituted Imines. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600552] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Won Jong Lee
- Department of ChemistryPOSTECH (Pohang University of Science and Technology) 77 Cheongam-Ro, Nam-Gu Pohang Gyeongbuk 37673 Republic of Korea
| | - Wook Jeong
- Department of ChemistryPOSTECH (Pohang University of Science and Technology) 77 Cheongam-Ro, Nam-Gu Pohang Gyeongbuk 37673 Republic of Korea
| | - Jaiwook Park
- Department of ChemistryPOSTECH (Pohang University of Science and Technology) 77 Cheongam-Ro, Nam-Gu Pohang Gyeongbuk 37673 Republic of Korea
| | - Young Ho Rhee
- Department of ChemistryPOSTECH (Pohang University of Science and Technology) 77 Cheongam-Ro, Nam-Gu Pohang Gyeongbuk 37673 Republic of Korea
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21
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Jiang Y, Schaus SE. Asymmetric Petasis Borono-Mannich Allylation Reactions Catalyzed by Chiral Biphenols. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yao Jiang
- Department of Chemistry, Center for Molecular Discovery; Boston University; 24 Cummington Mall Boston MA 02215 USA
| | - Scott E. Schaus
- Department of Chemistry, Center for Molecular Discovery; Boston University; 24 Cummington Mall Boston MA 02215 USA
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22
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Nakamura S, Hara Y, Furukawa T, Hirashita T. Enantioselective Barbier-type allylation of ketones using allyl halide and indium in water. RSC Adv 2017. [DOI: 10.1039/c7ra01038a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We disclose herein an efficient enantioselective Barbier-type allylation of ketones using allyl halide and indium metal in water.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Yoshichika Hara
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Takashi Furukawa
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Tsunehisa Hirashita
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
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23
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Zhao X, Huang Y, Qing FL, Xu XH. Synthesis of aryl triflones by insertion of arynes into C–SO2CF3 bonds. RSC Adv 2017. [DOI: 10.1039/c6ra26429h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A new approach toward the synthesis of aryl triflones was achieved by the formal insertion of arynes into C–SO2CF3 bonds.
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Affiliation(s)
- Xian Zhao
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Yangen Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Feng-Ling Qing
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
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24
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Han JB, Yang L, Chen X, Zha GF, Zhang CP. Perfluoroalkanesulfonylation of Alkynyl(phenyl)iodonium Tosylates by the Weakly Nucleophilic Sodium Perfluoroalkanesulfinates. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600717] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jia-Bin Han
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; 205 Luoshi Road Wuhan 430070 People's Republic of China
| | - Lian Yang
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; 205 Luoshi Road Wuhan 430070 People's Republic of China
| | - Xing Chen
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; 205 Luoshi Road Wuhan 430070 People's Republic of China
| | - Gao-Feng Zha
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; 205 Luoshi Road Wuhan 430070 People's Republic of China
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; 205 Luoshi Road Wuhan 430070 People's Republic of China
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25
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Kumar D, Vemula SR, Balasubramanian N, Cook GR. Indium-Mediated Stereoselective Allylation. Acc Chem Res 2016; 49:2169-2178. [PMID: 27700084 DOI: 10.1021/acs.accounts.6b00362] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Stereoselective indium-mediated organic reactions have enjoyed tremendous growth in the last 25 years. This is in part due to the insensitivity of allylindium to moisture, affording facile and practical reaction conditions coupled with outstanding functional group tolerance and minimal side reactions. Despite the plethora of articles about allylindium, there is much yet to be discovered and exploited for efficient and sustainable synthesis. In this Account, we describe indium-mediated synthetic methods for the preparation of chiral amines with the aim to present a balance of practical method development, novel asymmetric chemistry, and mechanistic understanding that impact multiple chemical and materials science disciplines. In 2005, we demonstrated the indium-mediated allylation of chiral hydrazones with complete diastereoselectivity (>99:1) and quantitative yields. Further, we revealed the first example of enantioselective indium-mediated allylation of hydrazones using catalytic (R)-3,3'-bis(trifluoromethyl)-BINOL ligands to afford homoallylic amines with high enantioselectivity. The use of enantiopure perfluoroalkylsulfonate BINOLs greatly improved the indium-mediated allylation of N-acylhydrazones with exquisite enantiocontrol (99% yield, 99% ee). This laboratory has also investigated indium-mediated asymmetric intramolecular cyclization in the presence of amino acid additives to deliver biologically relevant chromanes with excellent diastereoselectivity (dr >99:1). The effect of amino acid additives (N-Boc-glycine) was further investigated during the indium-mediated allylation of isatins with allyl bromide to yield homoallylic alcohols in excellent yields in a short time with a wide range of functional group tolerance. Critical mechanistic insight was gained, and evidence suggests that the additive plays two roles: (1) to increase the rate of formation of allylindium from allyl bromide and In(0) and (2) to increase the nucleophilicity of the allylindium reagent, probably through disruption of aggregates and coordination to the metal. We recently reported the palladium-catalyzed umpolung allylation of hydrazones with allyl acetates in the presence of indium(I) iodide (InI) with excellent diastereoselectivity (up to 99:1). The conversion was found to be inversely proportional to the phosphine concentration, providing insight into the mechanism of the critical redox transmetalation process that has implications for other Pd-catalyzed umpolung-type allylation processes. A detailed overview of the work in our lab is presented with the intention of stimulating further research interest in organoindium chemistry and its application in organic synthesis.
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Affiliation(s)
- Dinesh Kumar
- Department
of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Sandeep R. Vemula
- Department
of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | | | - Gregory R. Cook
- Department
of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
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26
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Zhang Y, Wu JP, Li G, Fandrick KR, Gao J, Tan Z, Johnson J, Li W, Sanyal S, Wang J, Sun X, Lorenz JC, Rodriguez S, Reeves JT, Grinberg N, Lee H, Yee N, Lu BZ, Senanayake CH. An Enantioselective Synthesis of an 11-β-HSD-1 Inhibitor via an Asymmetric Methallylation Catalyzed by (S)-3,3'-F2-BINOL. J Org Chem 2016; 81:2665-9. [PMID: 26909738 DOI: 10.1021/acs.joc.6b00189] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient asymmetric synthesis of 11-β-HSD inhibitor 1 has been accomplished in five linear steps and 53% overall yield, starting from the readily available 3-chloro-1-phenylpropan-1-one. The key feature of the synthesis includes an asymmetric methallylation of 3-chloro-1-phenylpropan-1-one catalyzed by the highly effective organocatalyst (S)-3,3'-F2-BINOL under solvent-free and metal-free conditions.
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Affiliation(s)
- Yongda Zhang
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jiang-Ping Wu
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Guisheng Li
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Keith R Fandrick
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Joe Gao
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Zhulin Tan
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Joe Johnson
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Wenjie Li
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Sanjit Sanyal
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jun Wang
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Xiufeng Sun
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jon C Lorenz
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Sonia Rodriguez
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jonathan T Reeves
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nelu Grinberg
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Heewon Lee
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nathan Yee
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Bruce Z Lu
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Chris H Senanayake
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc. , 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
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27
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Smyth LA, Phillips EM, Chan VS, Napolitano JG, Henry R, Shekhar S. Pd-Catalyzed Synthesis of Aryl and Heteroaryl Triflones from Reactions of Sodium Triflinate with Aryl (Heteroaryl) Triflates. J Org Chem 2016; 81:1285-94. [DOI: 10.1021/acs.joc.5b02523] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lynette A. Smyth
- AbbVie Inc., Deutschland GmbH & Co. KG, Knollstraße, 67061 Ludwigshafen, Germany
| | - Eric M. Phillips
- AbbVie Inc., Process
Research and Development, 1 North Waukegan
Road, North Chicago, Illinois 60064, United States
| | - Vincent S. Chan
- AbbVie Inc., Process
Research and Development, 1 North Waukegan
Road, North Chicago, Illinois 60064, United States
| | - José G. Napolitano
- AbbVie Inc.,
Discovery
Chemistry and Technology, 1 North Waukegan
Road, North Chicago, Illinois 60064, United States
| | - Rodger Henry
- AbbVie Inc.,
Discovery
Chemistry and Technology, 1 North Waukegan
Road, North Chicago, Illinois 60064, United States
| | - Shashank Shekhar
- AbbVie Inc., Process
Research and Development, 1 North Waukegan
Road, North Chicago, Illinois 60064, United States
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28
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Coffinet M, Lamy S, Jaroschik F, Vasse JL. Cyclopent-2-enylaluminium as allylzinc precursor for the diastereoselective allylmetallation of non-racemic imines: applications to the synthesis of enantiomerically enriched heterocycles. Org Biomol Chem 2016; 14:69-73. [PMID: 26563731 DOI: 10.1039/c5ob02184g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The generation of cyclopent-2-enylzinc from cyclopentadiene based on a titanium-catalyzed hydroalumination/transmetallation sequence is described. Applied to the allylmetallation of phenylglycinol-derived imines, this sequence leads to homoallylic amines with moderate to good stereoselectivities. The synthesis of disubstituted azetidines and piperidines illustrates the potential of the method.
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Affiliation(s)
- Michaël Coffinet
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims, 51687 Reims Cedex 2, France.
| | - Samantha Lamy
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims, 51687 Reims Cedex 2, France.
| | - Florian Jaroschik
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims, 51687 Reims Cedex 2, France.
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 7312) and Université de Reims, 51687 Reims Cedex 2, France.
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29
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Hua LN, Li H, Qing FL, Huang Y, Xu XH. Iodine-mediated regioselective synthesis of vinyl triflones from styrenes with CF3SO2Na. Org Biomol Chem 2016; 14:8443-7. [DOI: 10.1039/c6ob01567k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The iodine-mediated reaction of styrenes and CF3SO2Na proceeded regioselectively to give various potentially useful vinyl triflones.
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Affiliation(s)
- Li-Na Hua
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Huan Li
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Feng-Ling Qing
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Yangen Huang
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
| | - Xiu-Hua Xu
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- China
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30
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Huang Z, Wang C, Tokunaga E, Sumii Y, Shibata N. Stereoselective Synthesis of β-Lactam-triflones under Catalyst-Free Conditions. Org Lett 2015; 17:5610-3. [DOI: 10.1021/acs.orglett.5b02827] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhongyan Huang
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Chen Wang
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Yuji Sumii
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical
Sciences, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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31
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Okusu S, Hirano K, Tokunaga E, Shibata N. Organocatalyzed Trifluoromethylation of Ketones and Sulfonyl Fluorides by Fluoroform under a Superbase System. ChemistryOpen 2015; 4:581-5. [PMID: 26491635 PMCID: PMC4608523 DOI: 10.1002/open.201500160] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Indexed: 11/25/2022] Open
Abstract
Fluoroform (HCF3, HFC-23) is a side product in the manufacture of polytetrafluoroethylene (Teflon). Despite its attractive properties, taming HCF3 for trifluoromethylation is quite problematic owing to its low acidity and the lability of the naked trifluoromethyl carbanion generated from HCF3. Herein we report the organic-superbase-catalyzed trifluoromethylation of ketones and arylsulfonyl fluorides by HCF3. The reactions were carried out by using a newly developed "superbase organocatalyst system" consisting of catalytic amounts of P4-tBu and N(SiMe3)3. A series of aryl and alkyl ketones were converted into the corresponding α-trifluoromethyl carbinols in good yields under the organocatalysis conditions in THF. The superbase organocatalytic system can also be applied to the trifluoromethylation of arylsulfonyl fluorides for biologically important aryl triflones in THF or DMF in good yields. Protonated P4-tBu, H[P4-tBu](+), is suggested to be crucial for the catalytic process. This new catalytic methodology using HCF3 is expected to expand the range of synthetic applications of trifluoromethylation.
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Affiliation(s)
- Satoshi Okusu
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Kazuki Hirano
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Etsuko Tokunaga
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Department of Frontier Materials, Nagoya Institute of TechnologyGokiso, Showa-ku, Nagoya, 466-8555, Japan
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32
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Zhang K, Xu XH, Qing FL. Copper-Promoted Trifluoromethanesulfonylation and Trifluoromethylation of Arenediazonium Tetrafluoroborates with NaSO2CF3. J Org Chem 2015; 80:7658-65. [DOI: 10.1021/acs.joc.5b01295] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ke Zhang
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Xiu-Hua Xu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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33
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34
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Aslam NA, Babu SA, Rani S, Mahajan S, Solanki J, Yasuda M, Baba A. Diastereoselective Construction of 3-Aminooxindoles with Adjacent Stereocenters: Stereocontrolled Addition of γ-Substituted Allylindiums to Isatin Ketimines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500340] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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35
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Balasubramanian N, Mandal T, Cook GR. Highly Diastereoselective Palladium-Catalyzed Indium-Mediated Allylation of Chiral Hydrazones. Org Lett 2015; 17:314-7. [DOI: 10.1021/ol5034207] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Narayanaganesh Balasubramanian
- Department
of Chemistry and Biochemistry, North Dakota State University, P.O. Box 6050, Fargo, North Dakota 58108-6050, United States
| | | | - Gregory R. Cook
- Department
of Chemistry and Biochemistry, North Dakota State University, P.O. Box 6050, Fargo, North Dakota 58108-6050, United States
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36
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Xu XH, Matsuzaki K, Shibata N. Synthetic methods for compounds having CF3-S units on carbon by trifluoromethylation, trifluoromethylthiolation, triflylation, and related reactions. Chem Rev 2014; 115:731-64. [PMID: 25121343 DOI: 10.1021/cr500193b] [Citation(s) in RCA: 839] [Impact Index Per Article: 83.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiu-Hua Xu
- Department of Nanopharmaceutical Science and Department of Frontier Materials, Nagoya Institute of Technology , Gokiso, Showa-ku, Nagoya 466-8555, Japan
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37
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Wu H, Haeffner F, Hoveyda AH. An efficient, practical, and enantioselective method for synthesis of homoallenylamides catalyzed by an aminoalcohol-derived, boron-based catalyst. J Am Chem Soc 2014; 136:3780-3. [PMID: 24588835 PMCID: PMC3985786 DOI: 10.1021/ja500374p] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A practical catalytic
method for enantioselective addition
of an allene unit to aldimines is disclosed. Transformations are promoted
by an in-situ-generated B-based catalyst that is derived from a simple,
robust, and readily accessible (in multigram quantities) chiral aminoalcohol.
A range of aryl-, heteroaryl-, and alkyl-substituted homoallenylamides
can be obtained in 66–91% yield and 84:16 to >99:1 enantiomeric
ratio through reactions performed at ambient temperature and in the
presence of 0.1–3.0 mol% of the chiral catalyst and a commercially
available allenylboron reagent. The catalytic protocol does not require
strict anhydrous conditions, can be performed on gram scale, and promotes
highly selective addition of an allenyl unit (vs a propargyl group).
The utility of the approach is demonstrated through development of
succinct approaches to syntheses of anisomycin and epi-cytoxazone.
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Affiliation(s)
- Hao Wu
- Department of Chemistry, Merkert Chemistry Center, Boston College , Chestnut Hill, Massachusetts 02467, United States
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38
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Kawai H, Sugita Y, Tokunaga E, Sato H, Shiro M, Shibata N. Diastereoselective additive trifluoromethylation/halogenation of isoxazole triflones: synthesis of all-carbon-functionalized trifluoromethyl isoxazoline triflones. ChemistryOpen 2014; 3:14-8. [PMID: 24688889 PMCID: PMC3943607 DOI: 10.1002/open.201300044] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Indexed: 11/08/2022] Open
Abstract
Highly functionalized 5-trifluoromethyl-2-isoxazoline derivatives featuring a triflyl (SO2CF3) group at the 4-position were successfully synthesized via diastereoselective trifluoromethylation and halogenation of isoxazole triflones using the Ruppert- Prakash reagent. The trifluoromethylation is quite general in terms of the substrates including 3,5-diaryl isoxazole triflones and 3-aryl-5-styrylisoxazole triflones to provide products in high yields with excellent diastereoselectivities. The highly functionalized 5-trifluoromethyl-2-isoxazoline derivatives are expected to be a new class of antiparasiticides. Thus the triflyl group both activates isoxazoles and the 4-postion of CF3 adducts, and has a potential biological function.
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Affiliation(s)
- Hiroyuki Kawai
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 (Japan)
| | - Yutaka Sugita
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 (Japan)
| | - Etsuko Tokunaga
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 (Japan)
| | - Hiroyasu Sato
- Rigaku Corporation, 3-9-12 Mastubara-cho Akishima, Tokyo 196-8666 (Japan)
| | - Motoo Shiro
- Rigaku Corporation, 3-9-12 Mastubara-cho Akishima, Tokyo 196-8666 (Japan)
| | - Norio Shibata
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 (Japan)
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Pluta R, Nikolaienko P, Rueping M. Direct catalytic trifluoromethylthiolation of boronic acids and alkynes employing electrophilic shelf-stable N-(trifluoromethylthio)phthalimide. Angew Chem Int Ed Engl 2014; 53:1650-3. [PMID: 24449094 DOI: 10.1002/anie.201307484] [Citation(s) in RCA: 215] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Indexed: 12/15/2022]
Abstract
A new and safe method for the synthesis of N-(trifluoromethylthio)phthalimide, a convenient and shelf-stable reagent for the direct trifluoromethylthiolation, has been developed. N-(Trifluoromethylthio)phthalimide can be used as an electrophilic source of F3 CS(+) and reacts readily with boronic acids and alkynes under copper catalysis. The utility of CF3 S-containing molecules as biologically active agents, the mild reaction conditions employed, and the high tolerance of functional groups demonstrate the potential of this new methodology to be widely applied in organic synthesis as well as industrial pharmaceutical and agrochemical research and development.
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Affiliation(s)
- Roman Pluta
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany)
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Pluta R, Nikolaienko P, Rueping M. Direct Catalytic Trifluoromethylthiolation of Boronic Acids and Alkynes Employing Electrophilic Shelf-StableN-(trifluoromethylthio)phthalimide. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201307484] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ghosh D, Bera PK, Kumar M, Abdi SHR, Khan NUH, Kureshy RI, Bajaj HC. Asymmetric allylation of sulfonyl imines catalyzed by in situ generated Cu(ii) complexes of chiral amino alcohol based Schiff bases. RSC Adv 2014. [DOI: 10.1039/c4ra10929e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We have developed a catalytic route for enantioselective synthesis of homoallyl amines through Cu(ii)-Schiff base catalyzed allylation of aryl N-sulfonylimines.
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Affiliation(s)
- Debashis Ghosh
- Discipline of Inorganic Materials and Catalysis
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364 002, India
- Academy of Scientific and Innovative Research
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
| | - Prasanta Kumar Bera
- Discipline of Inorganic Materials and Catalysis
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364 002, India
| | - Manish Kumar
- Discipline of Inorganic Materials and Catalysis
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364 002, India
- Academy of Scientific and Innovative Research
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
| | - Sayed H. R. Abdi
- Discipline of Inorganic Materials and Catalysis
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364 002, India
- Academy of Scientific and Innovative Research
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
| | - Noor-ul H. Khan
- Discipline of Inorganic Materials and Catalysis
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364 002, India
- Academy of Scientific and Innovative Research
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
| | - Rukhsana I. Kureshy
- Discipline of Inorganic Materials and Catalysis
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364 002, India
- Academy of Scientific and Innovative Research
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
| | - Hari C. Bajaj
- Discipline of Inorganic Materials and Catalysis
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Bhavnagar-364 002, India
- Academy of Scientific and Innovative Research
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
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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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Xu XH, Taniguchi M, Wang X, Tokunaga E, Ozawa T, Masuda H, Shibata N. Stereoselective Synthesis of Vinyl Triflones and Heteroaryl Triflones through Anionic O→Cvinyland N→CvinylTrifluoromethanesulfonyl Migration Reactions. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307535] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Stereoselective Synthesis of Vinyl Triflones and Heteroaryl Triflones through Anionic O→Cvinyland N→CvinylTrifluoromethanesulfonyl Migration Reactions. Angew Chem Int Ed Engl 2013; 52:12628-31. [DOI: 10.1002/anie.201307535] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Indexed: 11/07/2022]
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Hill AN, Delaney KM, Sullivan TR, Mylod G, Kiesow KH, Bowyer WJ. Heterogeneous Rate Constants for Indium Mediated Allylations: Cinnamyl Chloride in Ethanol/Water Mixtures. J Phys Chem A 2013; 117:8826-35. [DOI: 10.1021/jp404027p] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexa N. Hill
- Department
of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Katherine M. Delaney
- Department
of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Tessa R. Sullivan
- Department
of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Gabriella Mylod
- Department
of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Katrina H. Kiesow
- Department
of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Walter J. Bowyer
- Department
of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
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Lee BS, Jang DO. A Mild and Efficient Three-Component Synthesis of Secondary and Tertiary Homoallylic Hydrazides. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201757] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zhang Y, Li N, Qu B, Ma S, Lee H, Gonnella NC, Gao J, Li W, Tan Z, Reeves JT, Wang J, Lorenz JC, Li G, Reeves DC, Premasiri A, Grinberg N, Haddad N, Lu BZ, Song JJ, Senanayake CH. Asymmetric Methallylation of Ketones Catalyzed by a Highly Active Organocatalyst 3,3′-F2-BINOL. Org Lett 2013; 15:1710-3. [DOI: 10.1021/ol400498a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yongda Zhang
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Ning Li
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bo Qu
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Shengli Ma
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Heewon Lee
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nina C. Gonnella
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Joe Gao
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Wenjie Li
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhulin Tan
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jonathan T. Reeves
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jun Wang
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jon C. Lorenz
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Guisheng Li
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Diana C. Reeves
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Ajith Premasiri
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nelu Grinberg
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nizar Haddad
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bruce Z. Lu
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jinhua J. Song
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Chris H. Senanayake
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
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Simple organic molecules as catalysts for enantioselective synthesis of amines and alcohols. Nature 2013; 494:216-21. [PMID: 23407537 PMCID: PMC3576146 DOI: 10.1038/nature11844] [Citation(s) in RCA: 183] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 12/17/2012] [Indexed: 11/09/2022]
Abstract
The discovery of catalysts that can be used to synthesize complex organic compounds by enantioselective transformations is central to advances in the life sciences; for this reason, many chemists aim to discover catalysts that allow for preparation of chiral molecules as predominantly one mirror-image isomer. The ideal catalyst should not contain precious elements and should bring reactions to completion in a few hours through operationally simple procedures. Here we introduce a set of small organic molecules that can catalyse reactions of unsaturated organoboron reagents with imines and carbonyls; the products of the reactions are enantiomerically pure amines and alcohols, which might serve as intermediates in the preparation of biologically active molecules. A distinguishing feature of this catalyst class is the presence of a 'key' proton embedded within their structure. Catalysts are derived from the abundant amino acid valine and are prepared in large quantities in four steps with inexpensive reagents. Reactions are scalable, do not demand stringent conditions, and can be performed with as little as 0.25 mole per cent catalyst in less than six hours at room temperature to generate products in more than 85 per cent yield and ≥97:3 enantiomeric ratio. The efficiency, selectivity and operational simplicity of the transformations and the range of boron-based reagents are expected to render this advance important for future progress in syntheses of amines and alcohols, which are useful in chemistry, biology and medicine.
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Lin X, Wang G, Li H, Huang Y, He W, Ye D, Huang KW, Yuan Y, Weng Z. Copper-catalyzed trifluoromethylation of arylsulfinate salts using an electrophilic trifluoromethylation reagent. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.041] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Hellmann G, Hack A, Thiemermann E, Luche O, Raabe G, Gais HJ. Chiral Fluorinated α-Sulfonyl Carbanions: Enantioselective Synthesis and Electrophilic Capture, Racemization Dynamics, and Structure. Chemistry 2013; 19:3869-97. [DOI: 10.1002/chem.201204014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Indexed: 11/06/2022]
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