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Takeda Y, Toyoda K, Sameera WMC, Tohnai N, Minakata S. Palladium‐Catalyzed Regioselective and Stereospecific Ring‐Opening Suzuki‐Miyaura Arylative Cross‐Coupling of 2‐Arylazetidines with Arylboronic Acids. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Youhei Takeda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - Kazuya Toyoda
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - W. M. C. Sameera
- Institute of Low Temperature Science Hokkaido University North 19 Kita-ku, Sapporo Hokkaido 0600819 Japan
| | - Norimitsu Tohnai
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
| | - Satoshi Minakata
- Department of Applied Chemistry Graduate School of Engineering Osaka University Yamadaoka 2-1 Suita Osaka 5650871 Japan
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2
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Zhao H, Gao Q, Zhang Y, Zhang P, Xu S. Iridium-Catalyzed γ-Selective Hydroboration of γ-Substituted Allylic Amides. Org Lett 2020; 22:2861-2866. [PMID: 32202433 DOI: 10.1021/acs.orglett.0c00977] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Reported here for the first time is the Ir-catalyzed γ-selective hydroboration of γ-substituted allylic amides under mild reaction conditions. A variety of functional groups could be compatible with reaction conditions, affording γ-branched amides in good yields with ≤97% γ-selectivity. We have also demonstrated that the obtained borylated products could be used in a series of C-O, C-F, C-Br, and C-C bond-forming reactions.
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Affiliation(s)
- Hongliang Zhao
- Green Catalysis Center, College of Chemistry, Henan Advanced Institute of Technology, Zhengzhou University, Zhengzhou 450001, China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China
| | - Qian Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China
| | - Yajuan Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China
| | - Panke Zhang
- Green Catalysis Center, College of Chemistry, Henan Advanced Institute of Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Science, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, China.,Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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Talukdar R. BF3·OEt2 catalyzed base-free regiospecific ring opening of N-activated azetidines with (E)-1-arylidene-2-arylhydrazines. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-018-1489-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Nguyen TN, May JA. Branched Amine Synthesis via Aziridine or Azetidine Opening with Organotrifluoroborates by Cooperative Brønsted/Lewis Acid Catalysis: An Acid-Dependent Divergent Mechanism. Org Lett 2018; 20:3618-3621. [PMID: 29874082 DOI: 10.1021/acs.orglett.8b01394] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A practical catalytic method to synthesize β,β- and γ,γ-substituted amines by opening aziridines and azetidines, respectively, using alkenyl, alkynyl, or aryl/heteroaryl trifluoroborate salts is described. This reaction features simple open-flask reaction conditions, the use of transition-metal-free catalysis, complete regioselectivity, and high diastereoselectivity. Preliminary mechanistic studies suggest that carbocation formation is disfavored. Stereoretentive addition is favored with Brønsted acid present, while stereoinversion is favored in its absence, indicating divergent mechanisms.
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Affiliation(s)
- Truong N Nguyen
- Department of Chemistry , University of Houston , 3585 Cullen Boulevard, Fleming Building Room 112 , Houston , Texas 77204-5003 , United States
| | - Jeremy A May
- Department of Chemistry , University of Houston , 3585 Cullen Boulevard, Fleming Building Room 112 , Houston , Texas 77204-5003 , United States
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5
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An efficient copper catalyzed one-pot, four-component, and diastereoselective synthesis of highly functionalized ferrocenyl azetidinimines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Ghorai MK, Shukla D, Bhattacharyya A. Syntheses of Chiral β- and γ-Amino Ethers, Morpholines, and Their Homologues via Nucleophilic Ring-Opening of Chiral Activated Aziridines and Azetidines. J Org Chem 2012; 77:3740-53. [DOI: 10.1021/jo300002u] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Dipti Shukla
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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Hata S, Fukuda D, Hachiya I, Shimizu M. Reductive Aldol and Mannich-Type Reactions of Azetidin-3-ones Promoted by Titanium Tetraiodide. Chem Asian J 2010; 5:473-7. [DOI: 10.1002/asia.200900457] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Ghorai MK, Kumar A, Tiwari DP. BF3·OEt2-Mediated Highly Regioselective SN2-Type Ring-Opening of N-Activated Aziridines and N-Activated Azetidines by Tetraalkylammonium Halides. J Org Chem 2009; 75:137-51. [DOI: 10.1021/jo902244y] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Manas K. Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India
| | - Deo Prakash Tiwari
- Department of Chemistry, Indian Institute of Technology, Kanpur, 208016, India
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10
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Zyder M, Kochel A, Szymańska-Buzar T. A new versatile binuclear seven-coordinate complex of molybdenum(II), [(μ-Cl)2{Mo(μ-Cl)(SnCl3)(CO)3}2]2−. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.09.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Meng LG, Cai P, Guo Q, Xue S. Cycloaddition of Alkynyl Ketones with N-Tosylimines Catalyzed by Bu3P and DMAP: Synthesis of Highly Functionalized Pyrrolidines and Azetidines. J Org Chem 2008; 73:8491-6. [DOI: 10.1021/jo801687v] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ling-Guo Meng
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, Peopleʼs Republic of China, and Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, Peopleʼs Republic of China
| | - Peijie Cai
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, Peopleʼs Republic of China, and Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, Peopleʼs Republic of China
| | - Qingxiang Guo
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, Peopleʼs Republic of China, and Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, Peopleʼs Republic of China
| | - Song Xue
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, Peopleʼs Republic of China, and Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, Peopleʼs Republic of China
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Ghorai MK, Kumar A, Das K. Lewis acid-mediated unprecedented ring-opening rearrangement of 2-aryl-N-tosylazetidines to enantiopure (E)-allylamines. Org Lett 2007; 9:5441-4. [PMID: 18020346 DOI: 10.1021/ol7023218] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly efficient strategy for Cu(OTf)2-mediated ring-opening of 2-aryl-N-tosylazetidines in polar and coordinating solvents followed by an unprecedented rearrangement to substituted achiral and chiral (E)-allylamines (ee >99%) is reported. The methodology has been applied for the synthesis of gamma-unsaturated-beta-amino acids. A plausible mechanism for the rearrangement is also described.
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Affiliation(s)
- Manas K Ghorai
- Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India.
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Ghorai MK, Das K, Kumar A. Lewis acid mediated SN2-type nucleophilic ring opening followed by [4+2] cycloaddition of N-tosylazetidines with aldehydes and ketones: synthesis of chiral 1,3-oxazinanes and 1,3-amino alcohols. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.04.097] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ghorai MK, Das K, Kumar A. A convenient synthetic route to enantiopure N-tosylazetidines from α-amino acids. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.02.033] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Ghorai MK, Das K, Kumar A, Das A. A convenient synthetic route to 2-aryl-N-tosylazetidines and their ZnX2 (X=I, OTf) mediated regioselective nucleophilic ring opening reactions: synthesis of γ-iodoamines and tetrahydropyrimidines. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.05.058] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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