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Shen J, Yue X, Xu J, Li W. α-Amino Radical-Mediated Difunctionalization of Alkenes with Polyhaloalkanes and N-Heteroarenes. Org Lett 2023; 25:1994-1998. [PMID: 36920106 DOI: 10.1021/acs.orglett.3c00647] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Herein, we report a mild and practical protocol for the α-perchloroalkyl β-heteroarylation of alkenes using available chloroform as the dichloromethyl source via α-amino radical-mediated halogen-atom transfer. Various substrates are compatible under mild reaction conditions, providing the corresponding products in moderate to good yields. This strategy gives an efficient and convenient method for the introduction of chloroalkyl motifs into N-heteroarenes. The control experiment demonstrates that the α-amino radical generated in situ is a key intermediate in the transformation.
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Affiliation(s)
- Jiabin Shen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, P. R. China
| | - Xiaoguang Yue
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Jun Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Wanmei Li
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, P. R. China
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2
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Wang Q, Wang M, Wu Q, Ma M, Zhao B. Synthesis of β-Polychlorinated Alkynes Enabled by Copper-Catalyzed Multicomponent Reaction. Org Lett 2022; 24:4772-4777. [PMID: 35766365 DOI: 10.1021/acs.orglett.2c01755] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Functional molecules bearing polychlorinated moieties usually play versatile roles in organic synthesis and biochemistry. A copper-catalyzed multicomponent polychloro-carboalkynylation of alkenes presents an efficient and operationally simple approach for the synthesis of β-polychlorinated alkynes. Mechanistic experiments were conducted demonstrating that an in situ generated copper acetylide complex was the real catalyst and reactive intermediate during the copper-catalytic cycle. And enantioselective exploration demonstrated potential application for the synthesis of chiral β-polychlorinated alkynes.
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Affiliation(s)
- Qiuzhu Wang
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Mengning Wang
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Qianhui Wu
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, China
| | - Mengtao Ma
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Binlin Zhao
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
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3
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Kusakabe M, Nagao K, Ohmiya H. Radical Relay Trichloromethylacylation of Alkenes through N-Heterocyclic Carbene Catalysis. Org Lett 2021; 23:7242-7247. [PMID: 34464143 DOI: 10.1021/acs.orglett.1c02639] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
N-Heterocyclic carbene catalysis enabling vicinal trichloromethylacylation of alkenes using tetrachloromethane and aldehydes has been developed. The reaction involves single electron transfer from the enolate form of the Breslow intermediate to tetrachloromethane to generate the persistent Breslow intermediate-derived ketyl radical and a transient trichloromethyl radical. After radical addition of the trichloromethyl radical to an alkene, the prolonged alkyl radical is preferentially captured by the ketyl radical over tetrachloromethane leading to the atom transfer radical addition product.
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Affiliation(s)
- Mayu Kusakabe
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kazunori Nagao
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hirohisa Ohmiya
- Division of Pharmaceutical Sciences, Graduate School of Medical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.,JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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4
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Affiliation(s)
- Gao Huang
- School of Petrochemical Engineering Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology Jiangsu Province Key Laboratory of Fine Petrochemical Engineering Changzhou University Changzhou 213164 People's Republic of China
| | - Jin‐Tao Yu
- School of Petrochemical Engineering Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology Jiangsu Province Key Laboratory of Fine Petrochemical Engineering Changzhou University Changzhou 213164 People's Republic of China
| | - Changduo Pan
- School of Chemical & Environmental Engineering Jiangsu University of Technology Changzhou 213001 People's Republic of China
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5
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Xu C, Zhu Z, Wang Y, Jing Z, Gao B, Zhao L, Dong WK. Oxidative α-Trichloromethylation of Tertiary Amines: An Entry to α-Amino Acid Esters. J Org Chem 2019; 84:2234-2242. [PMID: 30669841 DOI: 10.1021/acs.joc.8b03238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Changming Xu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
- Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhaobin Zhu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Yongchang Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Zhiguo Jing
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Bin Gao
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Li Zhao
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
| | - Wen-Kui Dong
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, 88 Anning West Road, Lanzhou 730070, China
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6
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He Y, Zheng Z, Liu Q, Song G, Sun N, Chai X. Tunable Synthesis of 2-Ene-1,4-diones, 4-Hydroxycyclopent-2-en-1-ones, and 2-(Furan-3-yl)acetamides via Palladium-Catalyzed Cascade Reactions of Allenols. J Org Chem 2018; 83:12514-12526. [PMID: 30239199 DOI: 10.1021/acs.joc.8b01753] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient and regioselective synthesis of 2-ene-1,4-diones, 4-hydroxycyclopent-2-en-1-ones, or 2-(furan-3-yl)acetamides is successfully realized through palladium-catalyzed one-pot multicomponent reactions of allenols with aryl iodides and carbon monoxide in the presence of tertiary amines. Interestingly, the selectivity depends on the substitution patterns of the allenol substrates. To be specific, from the reaction of allenols with no substituent attached on the internal position of the allenic moiety, 2-ene-1,4-diones or 4-hydroxycyclopent-2-en-1-ones were formed selectively through carbonylation of aryl iodide followed by acylation of allenol with the in situ formed acyl palladium species, β-hydride elimination of the in situ formed allyl palladium complex, and further tautomerization or intramolecular aldol reaction. From the reaction of allenols bearing a substituent at the internal position of the allenic unit, on the other hand, diversely substituted 2-(furan-3-yl)acetamides were formed through a cascade process combining carbonylation of aryl iodide, acylation, and carbonylation of allenol followed by intramolecular condensation and amination by tertiary amine featuring an oxidant-free C-N bond cleavage.
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Affiliation(s)
- Yan He
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Zhi Zheng
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Qimeng Liu
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Guixian Song
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Nan Sun
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
| | - Xinyuan Chai
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
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7
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Lee DS, Durán-Peña MJ, Burroughs L, Woodward S. Efficient Preparation of TMSCCl2 Br and Its Use in Dichlorocyclopropanation of Electron-Deficient Alkenes. Chemistry 2016; 22:7609-16. [PMID: 27112785 DOI: 10.1002/chem.201600607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Indexed: 11/10/2022]
Abstract
The reaction of excess TMSCl and LiCCl2 Br at low temperature is a technically simple high yield route to TMSCCl2 Br. The latter is a stable source of the dichlorobromomethide carbanion, which undergoes 1,4-addition with cyclic nitroalkenes and (E)-fumarates leading to dichlorocyclopropanes after bromide expulsion. For nitrostyrenes the reaction arrests at the 1,4-addition product. Low temperature NMR spectroscopy studies and DFT calculations suggest the formation of an "ate" species [(nitronate)SiFMe3 ](-) which, upon boil-off of TMSF at 10-20 °C, yields the cyclopropane. DFT calculations also support the experimental differences between fluoride and acetate as promotors.
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Affiliation(s)
- Darren S Lee
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
| | | | - Laurence Burroughs
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Simon Woodward
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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Ávila EP, de Souza IF, Oliveira AVB, Kartnaller V, Cajaiba J, de Souza ROMA, Corrêa CC, Amarante GW. Catalyst free decarboxylative trichloromethylation of aldimines. RSC Adv 2016. [DOI: 10.1039/c6ra23936f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A catalyst free decarboxylative trichloromethylation of imines to afford different trichloromethyl sulfonyl and sulfinyl amines has been presented.
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Affiliation(s)
- Eloah P. Ávila
- Departamento de Química
- Universidade Federal de Juiz de Fora
- Juiz de Fora
- Brazil
| | | | | | - Vinicius Kartnaller
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Rio de Janeiro
- Brazil
| | - João Cajaiba
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Rio de Janeiro
- Brazil
| | | | - Charlane C. Corrêa
- Departamento de Química
- Universidade Federal de Juiz de Fora
- Juiz de Fora
- Brazil
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9
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Nishimine T, Taira H, Tokunaga E, Shiro M, Shibata N. Enantioselective Trichloromethylation of MBH‐Fluorides with Chloroform Based on Silicon‐assisted C−F Activation and Carbanion Exchange Induced by a Ruppert–Prakash Reagent. Angew Chem Int Ed Engl 2015; 55:359-63. [DOI: 10.1002/anie.201508574] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Revised: 10/01/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Takayuki Nishimine
- Department of Frontier Materials Nagoya Institute of Technology, Gokiso Showa-ku, Nagoya 466-8555 Japan
| | - Hiromi Taira
- Department of Frontier Materials Nagoya Institute of Technology, Gokiso Showa-ku, Nagoya 466-8555 Japan
| | - Etsuko Tokunaga
- Department of Frontier Materials Nagoya Institute of Technology, Gokiso Showa-ku, Nagoya 466-8555 Japan
| | - Motoo Shiro
- Rigaku Corporation 3-9-12 Matsubara-cho Akishima, Tokyo 196-8666 Japan
| | - Norio Shibata
- Department of Frontier Materials Nagoya Institute of Technology, Gokiso Showa-ku, Nagoya 466-8555 Japan
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10
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Nishimine T, Taira H, Tokunaga E, Shiro M, Shibata N. Enantioselective Trichloromethylation of MBH‐Fluorides with Chloroform Based on Silicon‐assisted C−F Activation and Carbanion Exchange Induced by a Ruppert–Prakash Reagent. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508574] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Takayuki Nishimine
- Department of Frontier Materials Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 Japan
| | - Hiromi Taira
- Department of Frontier Materials Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 Japan
| | - Etsuko Tokunaga
- Department of Frontier Materials Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 Japan
| | - Motoo Shiro
- Rigaku Corporation 3-9-12 Matsubara-cho Akishima, Tokyo 196-8666 Japan
| | - Norio Shibata
- Department of Frontier Materials Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya 466-8555 Japan
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