101
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Wang Y, Zhou Y, Ma X, Song Q. Solvent-Dependent Cyclization of 2-Alkynylanilines and ClCF 2COONa for the Divergent Assembly of N-(Quinolin-2-yl)amides and Quinolin-2(1 H)-ones. Org Lett 2021; 23:5599-5604. [PMID: 34259006 DOI: 10.1021/acs.orglett.1c01484] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein, we present an expedient Cu-catalyzed [5 + 1] cyclization of 2-alkynylanilines and ClCF2COONa to divergent construction of N-(quinolin-2-yl)amides and quinolin-2(1H)-ones by regulating the reaction solvents. Notably, nitrile acts as a solvent and performs the Ritter reactions. ClCF2COONa is used as a C1 synthon in this transformation, which also represents the first example for utilization of ClCF2COONa as an efficient desiliconization reagent. The current protocol involves in situ generation of isocyanide, copper-activated alkyne, Ritter reaction and protonation.
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Affiliation(s)
- Ya Wang
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, People's Republic of China
| | - Yao Zhou
- Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei 435002, People's Republic of China
| | - Xingxing Ma
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, People's Republic of China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, People's Republic of China.,Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, People's Republic of China.,State Key Laboratory of Organometallic Chemistry and Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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102
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[4+1] cyclization of benzohydrazide and ClCF2COONa towards 1,3,4-oxadiazoles and 1,3,4-oxadiazoles-d5. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.08.089] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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103
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Liu Y, Shi Y, Wei L, Zhao K, Zhao J, Zhang P, Xu X, Li P. Gold-Catalyzed One-Pot Synthesis of Polyfluoroalkylated Oxazoles from N-Propargylamides Under Visible-Light Irradiation. Chem Asian J 2021; 16:2417-2420. [PMID: 34235859 DOI: 10.1002/asia.202100614] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/29/2021] [Indexed: 11/11/2022]
Abstract
A gold-catalyzed synthesis of polyfluoroalkylated oxazoles from N-propargylamides under visible-light irradiation has been developed. These reactions display excellent compatibility of radicals and gold catalysts under visible-light irradiation. Mechanistic experiments indicate that polyfluoroalkyl iodides play a dual role in enhanced compatibility of radicals and gold catalysts through assisted protodeauration of vinyl gold and reactivated the gold catalyst. In addition, PPh3 AuNTf2 not only activates N-propargylamide to generate vinyl gold intermediate, but also greatly promotes homolysis of polyfluoroalkyl iodides under blue light irradiation.
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Affiliation(s)
- Yantao Liu
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
| | - Yating Shi
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
| | - Lanen Wei
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
| | - Ke Zhao
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
| | - Jingjing Zhao
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
| | - Puyu Zhang
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
| | - Xuejun Xu
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
| | - Pan Li
- Department Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P. R. China
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104
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Li Y, Sun N, Zhang C, Hao M. Base‐Promoted
Formylation and
N
‐Difluoromethylation
of Azaindoles with Ethyl Bromodifluoroacetate as a Carbon Source. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yang Li
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 China
| | - Ning Sun
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 China
| | - Cai‐Lin Zhang
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 China
| | - Meng Hao
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University Xi'an Shaanxi 710048 China
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105
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Zhang M, Dou M, Xia Y, Hu Z, Zhang B, Bai Y, Xie J, Liu Q, Xie C, Lu D, Hou S, He J, Tao J, Sun R. Photostable 1-Trifluoromethyl Cinnamyl Alcohol Derivatives Designed as Potential Fungicides and Bactericides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5435-5445. [PMID: 33945271 DOI: 10.1021/acs.jafc.1c00272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In the current work, a series of 1-trifluoromethyl cinnamyl alcohol derivatives were designed and synthesized and their antifungal activities were evaluated. The bioassay result showed that most compounds exhibited excellent antifungal activity in vitro at 10 μg mL-1. Next, photostable and easily synthesized compound 2 with broad-spectrum antifungal activity in vitro was selected as a potential candidate to evaluate its antibacterial and antifungal activities. The EC50 values of compound 2 against eight fungal plant pathogens in vitro ranged from 3.806 to 17.981 μg mL-1; at the same time, compound 2 could effectively control Podosphaera xanthii, Odium heveae Steinm, Puccinia striiformis West, and Puccinia sorghi in pot experiments. In addition, compound 2 exhibited excellent antibacterial activities in vitro and in vivo against Xanthomonas oryzae pv. oryzae. Furthermore, the absorption and translocation of compound 2 in wheat plants were determined by the high-performance liquid chromatography method. The result showed that compound 2 could be translocated acropetally as well as basipetally in wheat plants. Finally, it was found that compound 2 had no cross-resistance with carbendazim, azoxystrobin, and boscalid.
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Affiliation(s)
- Meng Zhang
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Menglan Dou
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Yingying Xia
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Haikou, Hainan 570228, People's Republic of China
| | - Zhan Hu
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Beijing Zhang
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Yongxia Bai
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Jia Xie
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Qifeng Liu
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Changping Xie
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Dadong Lu
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Shuai Hou
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Jianguo He
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
| | - Jun Tao
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Haikou, Hainan 570228, People's Republic of China
| | - Ranfeng Sun
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, Hainan 570228, People's Republic of China
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106
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Mkrtchyan S, Jakubczyk M, Lanka S, Pittelkow M, Iaroshenko VO. Cu-Catalyzed Arylation of Bromo-Difluoro-Acetamides by Aryl Boronic Acids, Aryl Trialkoxysilanes and Dimethyl-Aryl-Sulfonium Salts: New Entries to Aromatic Amides. Molecules 2021; 26:2957. [PMID: 34065691 PMCID: PMC8156957 DOI: 10.3390/molecules26102957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 11/28/2022] Open
Abstract
We describe a mechanism-guided discovery of a synthetic methodology that enables the preparation of aromatic amides from 2-bromo-2,2-difluoroacetamides utilizing a copper-catalyzed direct arylation. Readily available and structurally simple aryl precursors such as aryl boronic acids, aryl trialkoxysilanes and dimethyl-aryl-sulfonium salts were used as the source for the aryl substituents. The scope of the reactions was tested, and the reactions were insensitive to the electronic nature of the aryl groups, as both electron-rich and electron-deficient aryls were successfully introduced. A wide range of 2-bromo-2,2-difluoroacetamides as either aliphatic or aromatic secondary or tertiary amides were also reactive under the developed conditions. The described synthetic protocols displayed excellent efficiency and were successfully utilized for the expeditious preparation of diverse aromatic amides in good-to-excellent yields. The reactions were scaled up to gram quantities.
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Affiliation(s)
- Satenik Mkrtchyan
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łodź, Poland; (M.J.); (S.L.)
| | - Michał Jakubczyk
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łodź, Poland; (M.J.); (S.L.)
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznań, Poland
| | - Suneel Lanka
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łodź, Poland; (M.J.); (S.L.)
- Institute of General and Ecological Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Michael Pittelkow
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark;
| | - Viktor O. Iaroshenko
- Laboratory of Homogeneous Catalysis and Molecular Design at the Center of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łodź, Poland; (M.J.); (S.L.)
- Dipartimento di Chimica e Biologia “A. Zambelli” Università di Salerno, Via Giovanni Paolo II, 84084 Fisciano (SA), Italy
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, 00014 Helsinki, Finland
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107
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Zhang J, Yang JD, Cheng JP. Chemoselective catalytic hydrodefluorination of trifluoromethylalkenes towards mono-/gem-di-fluoroalkenes under metal-free conditions. Nat Commun 2021; 12:2835. [PMID: 33990577 PMCID: PMC8121801 DOI: 10.1038/s41467-021-23101-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/15/2021] [Indexed: 01/08/2023] Open
Abstract
Fluorine-containing moieties show significant effects in improving the properties of functional molecules. Consequently, efficient methods for installing them into target compounds are in great demand, especially those enabled by metal-free catalysis. Here we show a diazaphospholene-catalyzed hydrodefluorination of trifluoromethylalkenes to chemoselectively construct gem-difluoroalkenes and terminal monofluoroalkenes by simple adjustment of the reactant stoichiometry. This metal-free hydrodefluorination features mild reaction conditions, good group compatibility, and almost quantitative yields for both product types. Stoichiometric experiments indicated a stepwise mechanism: hydridic addition to fluoroalkenes and subsequent β-F elimination from hydrophosphination intermediates. Density functional theory calculations disclosed the origin of chemoselectivity, regioselectivity and stereoselectivity, suggesting an electron-donating effect of the alkene-terminal fluorine atom.
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Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China
| | - Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China.
| | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China.
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin, China.
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108
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Ito S, Takahashi F, Yorimitsu H. Defluorinative Diborasodiation of Benzotrifluorides with Bis(pinacolato)Diboron and Sodium. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shiori Ito
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Fumiya Takahashi
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
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109
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Peng L, Wang H, Guo C. Copper-Catalyzed Enantioselective Difluoromethylation of Amino Acids via Difluorocarbene. J Am Chem Soc 2021; 143:6376-6381. [PMID: 33900748 DOI: 10.1021/jacs.1c02697] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Difluoromethyl amino acids (DFAA) exhibit intriguing biological properties, making them highly desirable motifs in agrochemical and pharmaceutical science. However, stereochemical control of direct difluoromethyl transformation via the difluorocarbene species has not been demonstrated. Here we describe an efficient copper-catalyzed asymmetric difluoromethylation reaction that systematically delivers chiral DFAA as rationally designed mechanism-based inhibitors of PLP-dependent amino acid decarboxylases. The reaction employs difluoromonochloromethane, an abundant raw material, as the direct precursor of difluorocarbene species, enabling the unprecedentedly direct conversion of amino esters into corresponding valuable DFAA products in good yields with excellent enantioselectivities. This de novo synthesis creates opportunities to integrate an asymmetric catalytic platform for the preparation of diverse libraries of biologically important DFAA derivatives and will support efforts in both drug discovery and development.
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Affiliation(s)
- Lingzi Peng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Hongyi Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
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110
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Priebbenow DL, Pilkington RL, Hearn KN, Polyzos A. Fluorinated Ketones as Trapping Reagents for Visible-Light-Induced Singlet Nucleophilic Carbenes. Org Lett 2021; 23:2783-2789. [PMID: 33733797 DOI: 10.1021/acs.orglett.1c00708] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Singlet nucleophilic carbenes (SNCs) containing only one heteroatom donor remain underutilized in chemical synthesis. We recently discovered that visible-light-induced SNC intermediates can be trapped by fluorinated ketones via 1,2-carbonyl addition to afford benzoin-type products. This discovery represents a rare example of nucleophilic carbenes reacting with ketones and delivers an efficient, user-friendly, and scalable process for accessing fluorinated tertiary alcohol derivatives driven only by light circumventing the use of exogenous catalysts or additives.
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Affiliation(s)
- Daniel L Priebbenow
- School of Chemistry, The University of Melbourne, Parkville 3010, Victoria, Australia
| | - Rowan L Pilkington
- School of Chemistry, The University of Melbourne, Parkville 3010, Victoria, Australia
| | - Kyle N Hearn
- STEM College, RMIT University, Melbourne 3000, Victoria, Australia
| | - Anastasios Polyzos
- School of Chemistry, The University of Melbourne, Parkville 3010, Victoria, Australia.,CSIRO Manufacturing, Research Way, Clayton 3168, Victoria, Australia
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111
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Chen H, Wang L, Liu Y, Guo M, Zhao W, Tang X, Wang G. Copper Catalyzed Direct Synthesis of Unsymmetrically Substituted Oxalamides From Bromodifluoroacetamide and Tertiary Amines. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hongtai Chen
- Department of Chemistry, School of Science Tianjin University 135 Yaguan Road Tianjin 300072 P. R. China
| | - Lianxin Wang
- Department of Chemistry, School of Science Tianjin University 135 Yaguan Road Tianjin 300072 P. R. China
| | - Yujie Liu
- Department of Chemistry, School of Science Tianjin University 135 Yaguan Road Tianjin 300072 P. R. China
| | - Minjie Guo
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology Tianjin University 92 Weijin Road Tianjin 300072 P. R. China
| | - Wentao Zhao
- Department of Chemistry, School of Science Tianjin University 135 Yaguan Road Tianjin 300072 P. R. China
| | - Xiangyang Tang
- Department of Chemistry, School of Science Tianjin University 135 Yaguan Road Tianjin 300072 P. R. China
| | - Guangwei Wang
- Department of Chemistry, School of Science Tianjin University 135 Yaguan Road Tianjin 300072 P. R. China
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112
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Difluoroalkylation/1,2-aryl migration of allylic alcohols under transition metal-free conditions. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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113
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Liu X, Sheng H, Zhou Y, Song Q. Pd-Catalyzed Assembly of Fluoren-9-ones by Merging of C–H Activation and Difluorocarbene Transfer. Org Lett 2021; 23:2543-2547. [DOI: 10.1021/acs.orglett.1c00467] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaobing Liu
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen 361021, Fujian, P. R. China
| | - Heyun Sheng
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen 361021, Fujian, P. R. China
| | - Yao Zhou
- College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi 435002, Hubei, P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen 361021, Fujian, P. R. China
- Fujian University Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, P. R. China
- State Key Laboratory of Organometallic Chemistry and Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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114
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Gao B, Ni Y, Liu X, Jiang T, Yan Q, Yang R, Zhang X. Copper‐Catalyzed Difluoroalkylation‐Thiolation of Alkenes Promoted by Na
2
S
2
O
5. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bao Gao
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Yingjie Ni
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Xiaojun Liu
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Tao Jiang
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Qian Yan
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Ruiting Yang
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
| | - Xiuli Zhang
- Department of Applied Chemistry Anhui Agricultural University Hefei 230036 People's Republic of China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Shanghai 200032 PR China
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115
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Yu YJ, Zhang FL, Peng TY, Wang CL, Cheng J, Chen C, Houk KN, Wang YF. Sequential C-F bond functionalizations of trifluoroacetamides and acetates via spin-center shifts. Science 2021; 371:1232-1240. [PMID: 33674411 DOI: 10.1126/science.abg0781] [Citation(s) in RCA: 134] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/09/2021] [Indexed: 12/21/2022]
Abstract
Defluorinative functionalization of readily accessible trifluoromethyl groups constitutes an economical route to partially fluorinated molecules. However, the controllable replacement of one or two fluorine atoms while maintaining high chemoselectivity remains a formidable challenge. Here we describe a general strategy for sequential carbon-fluorine (C-F) bond functionalizations of trifluoroacetamides and trifluoroacetates. The reaction begins with the activation of a carbonyl oxygen atom by a 4-dimethylaminopyridine-boryl radical, followed by a spin-center shift to trigger the C-F bond scission. A chemoselectivity-controllable two-stage process enables sequential generation of difluoro- and monofluoroalkyl radicals, which are selectively functionalized with different radical traps to afford diverse fluorinated products. The reaction mechanism and the origin of chemoselectivity were established by experimental and computational approaches.
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Affiliation(s)
- You-Jie Yu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Feng-Lian Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tian-Yu Peng
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chang-Ling Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jie Cheng
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chen Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA
| | - Yi-Feng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.,Center for Excellence in Molecular Synthesis of CAS, Hefei, Anhui 230026, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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116
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He SY, Yan XW, Tu HY, Zhang XG. Palladium-catalyzed selective defluorinative arylation for the efficient stereospecific synthesis of ( E)-β-fluoroacrylamides. Org Chem Front 2021. [DOI: 10.1039/d1qo00721a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A practical and efficient method for the synthesis of (E)-β-fluoroacrylamides was developed by the selective defluorinative arylation of trifluoropropanamides with arylboronic acids.
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Affiliation(s)
- Shi-Yu He
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xiao-Wei Yan
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
| | - Hai-Yong Tu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xing-Guo Zhang
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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117
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Yan G, Qiu K, Guo M. Recent advance in the C–F bond functionalization of trifluoromethyl-containing compounds. Org Chem Front 2021. [DOI: 10.1039/d1qo00037c] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The C–F bond is the strongest single bond in organic compounds.
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Affiliation(s)
- Guobing Yan
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
| | - Kaiying Qiu
- Department of Chemistry
- Lishui University
- Lishui 323000
- China
| | - Ming Guo
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
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118
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Zhao Y, Zhang Y, Liu Y, Zhu T, Wu J. Photoredox-catalyzed direct C(sp 2)–H difluoromethylation of enamides or heterocycles with [bis(difluoroacetoxy)iodo]benzene. Org Chem Front 2021. [DOI: 10.1039/d1qo00995h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox-catalyzed direct C(sp2)–H difluoromethylation of enamides and heterocycles is accomplished by using easily accessible [bis(difluoroacetoxy)iodo]benzene as the CF2H source.
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Affiliation(s)
- Yun Zhao
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yan Zhang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yating Liu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Tonghao Zhu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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119
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Zhang XJ, Cheng YM, Zhao XW, Cao ZY, Xiao X, Xu Y. Catalytic asymmetric synthesis of monofluoroalkenes and gem-difluoroalkenes: advances and perspectives. Org Chem Front 2021. [DOI: 10.1039/d0qo01630f] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The latest achievements in the catalytic asymmetric synthesis of both monofluoro- and gem-difluoroalkenes are discussed.
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Affiliation(s)
- Xiao-Juan Zhang
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Ya-Min Cheng
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Xiao-Wei Zhao
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Zhong-Yan Cao
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Xiao Xiao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Ying Xu
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
- Engineering Research Center for Water Environment and Health of Henan
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