1
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Sun Q, Li H, Chen X, Hao J, Deng H, Jiang H. Silver-Promoted Radical Cascade Aryldifluoromethylation/Cyclization of 2-Allyloxybenzaldehydes for the Synthesis of 3-Aryldifluoromethyl-Containing Chroman-4-one Derivatives. Molecules 2023; 28:molecules28083578. [PMID: 37110812 PMCID: PMC10142801 DOI: 10.3390/molecules28083578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
A convenient silver-promoted radical cascade aryldifluoromethylation/cyclization of 2-allyloxybenzaldehydes has been developed. Experimental studies disclosed that the addition of aryldifluoromethyl radicals in situ produced from easily accessible gem-difluoroarylacetic acids to unactivated double bonds in 2-allyloxybenzaldehyde was an effective route to access a series of 3-aryldifluoromethyl-containing chroman-4-one derivatives in moderate to good yields under mild reaction conditions.
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Affiliation(s)
- Qianqian Sun
- Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Hongxiao Li
- Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Xingyu Chen
- Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Jian Hao
- Department of Chemistry, Shanghai University, Shanghai 200444, China
| | - Hongmei Deng
- Laboratory for Microstructures, Shanghai University, Shanghai 200444, China
| | - Haizhen Jiang
- Department of Chemistry, Shanghai University, Shanghai 200444, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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2
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Peng P, Yang R, Xu B. Tunable Reduction of Benzyl
α
,
α
‐Difluorotriflones: Synthesis of Difluoroarenes and Sodium Aryldifluoromethyl Sufinates and their Applications. ChemistrySelect 2022. [DOI: 10.1002/slct.202202870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Peng Peng
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology, Address Hangzhou 310014 China
| | - Ren‐Yin Yang
- College of Chemistry Chemical Engineering and Biotechnology Donghua University, Address Shanghai 201620 China
| | - Bo Xu
- College of Chemistry Chemical Engineering and Biotechnology Donghua University, Address Shanghai 201620 China
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3
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Gong H, Wang J, Peng Y, Chen H, Deng H, Hao J, Wan W. Photocatalyzed difluoroalkylation of pyridine N-oxides. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2112057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Haiying Gong
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Juan Wang
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Yi Peng
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Hua Chen
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Hongmei Deng
- Laboratory of Microstructures, Shanghai University, Shanghai, China
| | - Jian Hao
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Wen Wan
- Department of Chemistry, Shanghai University, Shanghai, China
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4
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Peng Y, Gong H, Wang J, Chen H, Deng H, Hao J, Wan W. Regiospecific C2‐Difluoroalkylation on Chromone via Transition‐Metal‐free Oxidative Decarboxylation of Aryldifluoroacetic acids. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yi Peng
- Shanghai University Department of chemistry CHINA
| | - Haiying Gong
- Shanghai University Department of chemistry CHINA
| | - Juan Wang
- Shanghai University Department of chemistry CHINA
| | - Hua Chen
- Shanghai University Department of chemistry CHINA
| | - Hongmei Deng
- Shanghai University laboratory of Microstructures CHINA
| | - Jian Hao
- Shanghai University Department of chemistry CHINA
| | - Wen Wan
- Shanghai University of Science and Technology: Shanghai University Deptartment of Chemistry Shangda Road 99 200444 Shanghai CHINA
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5
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Guo X, Li P, Wang Q, Wang Q, Wang L. Remote Selective Decarboxylative Difluoroarylmethylation of 8-Aminoquinolines under Transition Metal-Free Conditions. Org Chem Front 2022. [DOI: 10.1039/d1qo01912k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile transition metal-free decarboxylative C4 selective C-H difluoroarylmethylation of 8-aminoquinolines has been developed. This strategy proceeds under simple aqueous conditions and displays a broad substrate scope and excellent functional...
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6
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Shi L, An D, Mei GJ. Difluoromethylation of Heterocycles via a Radical Process. Org Chem Front 2022. [DOI: 10.1039/d2qo00762b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Difluoromethylation is of prime importance for its applicability in functionalizing diverse fluorine-containing heterocycles, which are core moieties of various biologically and pharmacologically active ingredients. Due to their significant biological and...
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7
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Zhu Y, Xiao T, Xia D, Yang W. Recent Advances in the Decarboxylative Fluoroalkylation of Fluoroalkyl Carboxylic Acids. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202208017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8
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Saranya PV, Aneeja T, Anilkumar G. Palladium‐catalyzed difluoromethylation and difluoroalkylation reactions: An overview. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6503] [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]
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9
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Zhao Y, Ju G, Tu G. Recent Advances in Transition-Metal-Catalyzed Selective C–H Alkoxycarbonyldifluoromethylation Reactions of Aromatic Substrates. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1522-7460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractFluorine is well-known as a very special element. Approximately 30% of agrochemicals and 20% of all drugs contain fluorine; most of those compounds have unique functions in biochemistry, pharmacy, and bioscience and those containing alkoxycarbonyldifluoromethyl functional groups often have irreplaceable roles. Therefore, the selective introduction of alkoxycarbonyldifluoromethylated functional groups into various aromatic substrates has significant practical application. This review describes recent advances in selective alkoxycarbonyldifluoromethylation of aromatic substrates by using different catalytic strategies (cyclometalated ruthenium complex, transient regulating and visible-light-induced strategies).1 Introduction2 para-C–H Alkoxycarbonyldifluoromethylation of Aromatic Derivatives2.1 Ruthenium Catalysis2.2 Palladium Catalysis2.3 Visible-Light Catalysis2.4 Iron Catalysis3 meta-C–H Alkoxycarbonyldifluoromethylation of Aromatic Derivatives3.1 Ruthenium Catalysis3.2 Palladium Catalysis4 The Influence of Transition Metals and Directing Groups on Site Selectivity of Alkoxycarbonyldifluoromethylation4.1 The Influence of Directing Groups on the Site Selectivity of Alkoxycarbonyldifluoromethylation4.2 The Influence of Transition Metals on the Site Selectivity of Alkoxycarbonyldifluoromethylation5 Conclusions
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Affiliation(s)
- Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University
- School of Chemistry and Chemical Engineering, Henan Normal University
| | - Guodong Ju
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University
| | - Guanglian Tu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University
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10
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Wang Q, Gong H, Zhang Y, Peng Y, Chen H, Li M, Deng H, Hao J, Wan W. Visible-light mediated stereospecific C(sp 2)-H difluoroalkylation of ( Z)-aldoximes. Org Biomol Chem 2021; 19:7867-7874. [PMID: 34492676 DOI: 10.1039/d1ob01401c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible light mediated stereospecific C(sp2)-H difluoroalkylation of (Z)-aldoximes to (E)-difluoroalkylated ketoximes has been described. In this reaction, (hetero)-aromatic and aliphatic difluoroalkylated ketoximes could be obtained with the retention of the configuration of the starting aldoximes. A preliminary mechanism study showed that a difluoromethyl radical via an SET pathway was involved.
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Affiliation(s)
- Qian Wang
- Department of Chemistry, Shanghai University, Shanghai, China.
| | - Haiying Gong
- Department of Chemistry, Shanghai University, Shanghai, China.
| | - Yifang Zhang
- Department of Chemistry, Shanghai University, Shanghai, China.
| | - Yi Peng
- Department of Chemistry, Shanghai University, Shanghai, China.
| | - Hua Chen
- Department of Chemistry, Shanghai University, Shanghai, China.
| | - Mingjie Li
- Department of Chemistry, Shanghai University, Shanghai, China.
| | - Hongmei Deng
- Laboratory of Microstructures, Shanghai University, China
| | - Jian Hao
- Department of Chemistry, Shanghai University, Shanghai, China.
| | - Wen Wan
- Department of Chemistry, Shanghai University, Shanghai, China.
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11
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Zhang Y, Wang Q, Peng Y, Gong H, Chen H, Deng H, Hao J, Wan W. Metal-free, oxidative decarboxylation of aryldifluoroacetic acid with the formation of the ArS-CF 2 bond. Org Biomol Chem 2021; 19:7024-7030. [PMID: 34328491 DOI: 10.1039/d1ob01165k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A metal-free, oxidative decarboxylative reaction of aryldifluoroacetic acids with diaryl disulfides or thiols under mild reaction conditions has been developed. This is an efficient and straightforward radical cross-coupling method for the synthesis of diverse aryldifluoromethylthio ethers in moderate to excellent yields.
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Affiliation(s)
- Yifang Zhang
- Department of Chemistry, Shanghai University, Shanghai, China.
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12
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Xiao P, Pannecoucke X, Bouillon JP, Couve-Bonnaire S. Wonderful fusion of organofluorine chemistry and decarboxylation strategy. Chem Soc Rev 2021; 50:6094-6151. [PMID: 34027960 DOI: 10.1039/d1cs00216c] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Decarboxylation strategy has been emerging as a powerful tool for the synthesis of fluorine-containing organic compounds that play important roles in various fields such as pharmaceuticals, agrochemicals, and materials science. Considerable progress in decarboxylation has been made over the past decade towards the construction of diverse valuable fluorinated fine chemicals for which the fluorinated part can be brought in two ways. The first way is described as the reaction of non-fluorinated carboxylic acids (and their derivatives) with fluorinating reagents, as well as fluorine-containing building blocks. The second way is dedicated to the exploration and the use of fluorine-containing carboxylic acids (and their derivatives) in decarboxylative transformations. This review aims to provide a comprehensive summary of the development and applications of decarboxylative radical, nucleophilic and cross-coupling strategies in organofluorine chemistry.
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Affiliation(s)
- Pan Xiao
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France.
| | - Xavier Pannecoucke
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France.
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13
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Zhu Y, Xu H, Zhang J, Luo Y, Dong L. Ru(II)‐Catalyzed Difluoromethylations of 7‐Azaindoles: Access to Novel Fluoro‐7‐Azaindole Derivatives. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yan‐Ying Zhu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University 610041 Chengdu P. R. China
| | - Hui‐Bei Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University 610041 Chengdu P. R. China
| | - Jing Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University 610041 Chengdu P. R. China
| | - Yi Luo
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University 610041 Chengdu P. R. China
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University 610041 Chengdu P. R. China
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14
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Ruthenium(II)-catalyzed para-selective C H difluoroalkylation of aromatic aldehydes and ketones using transient directing groups. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.09.044] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Wang P, Du P, Sun Q, Zhang J, Deng H, Jiang H. Silver-catalyzed decarboxylative radical allylation of α,α-difluoroarylacetic acids for the construction of CF 2-allyl bonds. Org Biomol Chem 2021; 19:2023-2029. [PMID: 33594399 DOI: 10.1039/d0ob02546a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient silver-catalyzed method of decarboxylative radical allylation of α,α-difluoroarylacetic acids to build CF2-allyl bonds has been developed. Using allylsulfone as an allyl donor, α,α-difluorine substituted arylacetic acids bearing various functional groups are successfully allylated to access a series of 3-(α,α-difluorobenzyl)-1-propylene compounds in moderate to excellent yields in aqueous CH3CN solution under the mild conditions. Experimental studies disclosed that the α-fluorine substitution of arylacetic acid has a great influence on free radical activity and reactivity.
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Affiliation(s)
- Pingyang Wang
- Department of Chemistry, Shanghai University, Shanghai, 200444, PR China.
| | - Pengcheng Du
- Department of Chemistry, Shanghai University, Shanghai, 200444, PR China.
| | - Qianqian Sun
- Department of Chemistry, Shanghai University, Shanghai, 200444, PR China.
| | - Jianhua Zhang
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai University, Shanghai, 200072, PR China
| | - Hongmei Deng
- Laboratory for Microstructures, Shanghai University, Shanghai, 200444, PR China
| | - Haizhen Jiang
- Department of Chemistry, Shanghai University, Shanghai, 200444, PR China. and Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, PR China
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16
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Xu HB, Chen YJ, Chai XY, Yang JH, Xu YJ, Dong L. Ruthenium-Catalyzed P III-Directed Remote ε-C-H Alkylation of Phosphines. Org Lett 2021; 23:2052-2056. [PMID: 33630600 DOI: 10.1021/acs.orglett.0c03906] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ruthenium-catalyzed remote ε-C-H alkylation of phosphines with tertiary alkyl halides has been developed. This novel PIII-directed C-H activation strategy tolerated various functional groups and delivered a wide variety of modified phosphines with excellent meta-site selectivity. Preliminary mechanistic studies indicated that a PIII-assisted ortho-cyclometalation/remote σ-activation pathway might be involved in this methodology.
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Affiliation(s)
- Hui-Bei Xu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610066, China.,Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yin-Jun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Xin-Yue Chai
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jia-Hui Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yan-Jun Xu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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17
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Carvalho DR, Christian AH. Modern approaches towards the synthesis of geminal difluoroalkyl groups. Org Biomol Chem 2021; 19:947-964. [PMID: 33406177 DOI: 10.1039/d0ob02374d] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This review will cover the importance of and most recent approaches toward geminal difluoroalkyl groups. Transition metal-mediated, photochemical, organocatalytic, and other methods as well as their mechanistic implications will be discussed, with special emphasis on applications to biologically-relevant compounds.
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Affiliation(s)
- Dayanne R Carvalho
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, USA.
| | - Alec H Christian
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, USA.
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18
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Mei W, Kong Y, Yan G. Synthetic applications of α,α-difluoroarylacetic acids and salts via decarboxylative functionalization. Org Chem Front 2021. [DOI: 10.1039/d1qo00775k] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
α,α-Difluoroarylacetic acids are stable, inexpensive and readily available building blocks which can be used to access various difluoromethylated aryl motifs via decarboxylative functionalization for the formation of carbon–carbon and carbon-heteroatom (F, O, S) bonds.
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Affiliation(s)
- Wenqiang Mei
- College of Jiyang, Zhejiang A&F University, Zhuji 311800, China
| | - Yilin Kong
- College of Jiyang, Zhejiang A&F University, Zhuji 311800, China
| | - Guobing Yan
- College of Jiyang, Zhejiang A&F University, Zhuji 311800, China
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19
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Chen XP, Han J, Hu YJ, Li YF, Wang XC, Ran JX, Wang ZH, Wu FH. Study on the mild, rapid and selective difluorocarbene-mediated triclassification of iododifluoroacetophenone with secondary amines and tree model for product classification. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Zhao F, Guo S, Zhang Y, Sun T, Yang B, Ye Y, Sun K. Silver-catalyzed decarboxylative radical relay difluoroalkylation–carbocyclization: convenient access to CF 2-containing quinolinones. Org Chem Front 2021. [DOI: 10.1039/d1qo01425k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical Ag-catalyzed formal decarboxylation and radical difluoroalkylation–carbocyclization–hydrolysis route is established to construct a series of structurally diverse CF2-containing N-heterocycles.
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Affiliation(s)
- Feng Zhao
- School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, P. R. China
| | - Sa Guo
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China
| | - Yan Zhang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China
| | - Ting Sun
- School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, P. R. China
| | - Bing Yang
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China
| | - Yong Ye
- College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Kai Sun
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, 264005, Shandong, P. R. China
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21
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Zhang Y, Ge J, Luo L, Yan SQ, Lai GW, Mei ZQ, Luo HQ, Fan XL. Difluoroisoxazolacetophenone: A Difluoroalkylation Reagent for Organocatalytic Vinylogous Nitroaldol Reactions of 1,2-Diketones. Org Lett 2020; 22:7952-7957. [PMID: 32991188 DOI: 10.1021/acs.orglett.0c02873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Difluoroisoxazolacetophenone (DFIO) is developed as a new difluoroalkylation reagent that can be easily prepared from inexpensive starting materials. In situ remote C-C bond cleavage of DFIO affords γ,γ-difluoroisoxazole nitronate that undergoes base-catalyzed vinylogous nitroaldol additions to isatins, benzothiophene-2,3-dione, unsaturated-α-ketoesters, and cyclic 1,2-diketones. This organocatalytic debenzoate vinylogous nitroaldol reaction provides a new and mild approach for the preparation of various difluoroisoxazole-substituted 3-hydroxy-2-oxindoles.
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Affiliation(s)
- Yong Zhang
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Jin Ge
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Liang Luo
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Su-Qiong Yan
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Guo-Wei Lai
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Zu-Qin Mei
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Hai-Qing Luo
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Xiao-Lin Fan
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
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22
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Chen Z, Bai X, Sun J, Xu Y. Fe(III)-Catalyzed Decarboxylative C3-Difluoroarylmethylation of Coumarins with α,α-Difluoroarylacetic Acids. J Org Chem 2020; 85:7674-7682. [PMID: 32436381 DOI: 10.1021/acs.joc.0c00113] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A facile Fe(III)-catalyzed oxidative decarboxylative radical coupling reaction of α,α-difluoroarylacetic acids with coumarins has been developed. This transformation, which provides a series of C-3 difluoroarylmethylated coumarins containing various functional groups in moderate-to-good yields, features easily accessible starting materials and operational simplicity.
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Affiliation(s)
- Zhiwei Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou310014, P. R. China
| | - Xiang Bai
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou310014, P. R. China
| | - Jie Sun
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou310014, P. R. China
| | - Yicheng Xu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou310014, P. R. China
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23
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Gao Y, Zhao L, Xiang T, Li P, Wang L. Photoinitiated decarboxylative C3-difluoroarylmethylation of quinoxalin-2(1 H)-ones with potassium 2,2-difluoro-2-arylacetates in water. RSC Adv 2020; 10:10559-10568. [PMID: 35492892 PMCID: PMC9050393 DOI: 10.1039/d0ra02059a] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/05/2020] [Indexed: 12/19/2022] Open
Abstract
An efficient and green strategy for the preparation of C3-difluoroarylmethylated quinoxalin-2(1H)-one via a visible-light-induced decarboxylative C3-difluoroarylmethylation of quinoxalin-2(1H)-one with potassium 2,2-difluoro-2-arylacetate in water at room temperature was developed. This photoinduced reaction generated the desired products in good yields under simple and mild conditions.
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Affiliation(s)
- Yanhui Gao
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Lulu Zhao
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Tianyi Xiang
- College of Pharmacy, Shenyang Pharmaceutical University Shenyang 110016 P. R. China
| | - Pinhua Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University Huaibei Anhui 235000 P. R. China
| | - Lei Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Department of Chemistry, Huaibei Normal University Huaibei Anhui 235000 P. R. China
- Department of Chemistry, Advanced Research Institute, Taizhou University Taizhou Zhejiang 318000 P. R. China
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24
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Li X, Zhang R, Zhang X, Zhu P, Yao T. Silver-Catalyzed Decarboxylative Allylation of Difluoroarylacetic Acids with Allyl Sulfones in Water. Chem Asian J 2020; 15:1175-1179. [PMID: 32056375 DOI: 10.1002/asia.202000059] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/11/2020] [Indexed: 11/07/2022]
Abstract
A practical silver-catalyzed decarboxylative allylation of α,α-difluoroarylacetic acids with allyl sulfones is described, which provides a variety of β,β-difluorinated alkenes in good yields. Notably, the reaction proceeds smoothly in water with good functional group tolerance. The practicality and synthetic value of this process was demonstrated by scaled-up experiment and elaboration of the products via reduction or Heck reaction. Primary mechanism investigations suggest that a radical process might be involved.
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Affiliation(s)
- Xiang Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Ruihong Zhang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Xiaofei Zhang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Peiyuan Zhu
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
| | - Tuanli Yao
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
- Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, China
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25
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Xie X, Zhang Y, Hao J, Wan W. Ag-Catalyzed minisci C–H difluoromethylarylation of N-heteroarenes. Org Biomol Chem 2020; 18:400-404. [DOI: 10.1039/c9ob02586c] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A mild silver-catalyzed decarboxylative C–H difluoromethylarylation of electron-deficient N-heteroarenes.
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Affiliation(s)
- Xiaojuan Xie
- Department of Chemistry
- Shanghai University
- Shanghai
- China
| | - Yifang Zhang
- Department of Chemistry
- Shanghai University
- Shanghai
- China
| | - Jian Hao
- Department of Chemistry
- Shanghai University
- Shanghai
- China
- Key Laboratory of Organofluorine Chemistry
| | - Wen Wan
- Department of Chemistry
- Shanghai University
- Shanghai
- China
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26
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Zhou J, Wang F, Lin Z, Cheng C, Zhang Q, Li J. Visible-Light-Induced para-Selective C(sp 2)-H Difluoroalkylation of Diverse (Hetero)aromatic Carbonyls. Org Lett 2019; 22:68-72. [PMID: 31854995 DOI: 10.1021/acs.orglett.9b03923] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient visible-light-induced para-selective C(sp2)-H difluoroalkylation of diverse electron-deficient (hetero)aromatic carbonyls (aldehydes and ketones) at ambient temperature has been developed by employing Ir(ppy)3 as the catalyst and 1,10-phenanthroline as the additive. This protocol was highlighted by its wide substrate scope, high regioselectivity, low catalyst usage, and operational simplicity.
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Affiliation(s)
- Jiadi Zhou
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals , Zhejiang University of Technology , Hangzhou 310014 , P.R. China
| | - Fang Wang
- College of Pharmaceutical Sciences , Zhejiang University of Technology , Hangzhou 310014 , P.R. China
| | - Zhihao Lin
- College of Pharmaceutical Sciences , Zhejiang University of Technology , Hangzhou 310014 , P.R. China
| | - Cheng Cheng
- College of Pharmaceutical Sciences , Zhejiang University of Technology , Hangzhou 310014 , P.R. China
| | - Qiwei Zhang
- College of Pharmaceutical Sciences , Zhejiang University of Technology , Hangzhou 310014 , P.R. China
| | - Jianjun Li
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals , Zhejiang University of Technology , Hangzhou 310014 , P.R. China.,College of Pharmaceutical Sciences , Zhejiang University of Technology , Hangzhou 310014 , P.R. China
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27
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Wang Y, Zhao H, Xie X, Jiang H, Deng H, Hao J, Wan W. Silver-catalyzed decarboxylative homocoupling reaction for the construction of tetrafluoroethylene-bridging aromatic compounds. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1651865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Yong Wang
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Huaxin Zhao
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Xiaojuan Xie
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Haizhen Jiang
- Department of Chemistry, Shanghai University, Shanghai, China
| | - Hongmei Deng
- Laboratory of Microstructures, Shanghai University, Shanghai, China
| | - Jian Hao
- Department of Chemistry, Shanghai University, Shanghai, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Wen Wan
- Department of Chemistry, Shanghai University, Shanghai, China
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28
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Guo L, Xu C, Wu DC, Hu GQ, Zhang HH, Hong K, Chen S, Liu X. Cascade alkylation and deuteration with aryl iodides via Pd/norbornene catalysis: an efficient method for the synthesis of congested deuterium-labeled arenes. Chem Commun (Camb) 2019; 55:8567-8570. [DOI: 10.1039/c9cc03988k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An efficient approach for synthesizing congested deuterium-labeled arenes via cascade alkylation and deuteration with aryl iodides has been disclosed.
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Affiliation(s)
- Lei Guo
- College of Chemistry and Chemical Engineering
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Chen Xu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Ding-Chuan Wu
- College of Chemistry and Chemical Engineering
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Guang-Qi Hu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Hong-Hai Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Kunlun Hong
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Su Chen
- College of Chemistry and Chemical Engineering
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
| | - Xiang Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech. University (Nanjing Tech.)
- Nanjing 211816
- P. R. China
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