51
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Xingang Zhang. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/anie.201605777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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52
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Xingang Zhang. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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53
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Shao C, Shi G, Zhang Y. Easy Access to Difluoromethylene-Containing Arene Analogues through Palladium-Catalysed C-H Olefination. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600954] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Changdong Shao
- School of Chemical Science and Engineering; Tongji University; 1239 Siping Road 200092 Shanghai P. R. China
- UNEP - Tongji Institute of Environment for Sustainable Development; Tongji University; 1239 Siping Road 200092 Shanghai P. R. China
| | - Guangfa Shi
- School of Chemical Science and Engineering; Tongji University; 1239 Siping Road 200092 Shanghai P. R. China
| | - Yanghui Zhang
- School of Chemical Science and Engineering; Tongji University; 1239 Siping Road 200092 Shanghai P. R. China
- UNEP - Tongji Institute of Environment for Sustainable Development; Tongji University; 1239 Siping Road 200092 Shanghai P. R. China
- Shanghai Key Laboratory of Chemical Assessment and Sustainability; 1239 Siping Road 200092 Shanghai P. R. China
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54
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Li J, Wan W, Ma G, Chen Y, Hu Q, Kang K, Jiang H, Hao J. Silver-Mediated C-H Difluoromethylation of Arenes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600770] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jialiang Li
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Wen Wan
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Guobin Ma
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Yunrong Chen
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Qingyang Hu
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Kai Kang
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Haizhen Jiang
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Jian Hao
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Ling Ling Road 345 Shanghai P. R. China
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55
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Zhao HY, Feng Z, Luo Z, Zhang X. Carbonylation of Difluoroalkyl Bromides Catalyzed by Palladium. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605380] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hai-Yang Zhao
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Zhang Feng
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Zhiji Luo
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
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56
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Zhao HY, Feng Z, Luo Z, Zhang X. Carbonylation of Difluoroalkyl Bromides Catalyzed by Palladium. Angew Chem Int Ed Engl 2016; 55:10401-5. [DOI: 10.1002/anie.201605380] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 06/30/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Hai-Yang Zhao
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Zhang Feng
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Zhiji Luo
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
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57
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Andersen TL, Frederiksen MW, Domino K, Skrydstrup T. Direct Access to α,α-Difluoroacylated Arenes by Palladium-Catalyzed Carbonylation of (Hetero)Aryl Boronic Acid Derivatives. Angew Chem Int Ed Engl 2016; 55:10396-400. [DOI: 10.1002/anie.201604152] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/03/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Thomas L. Andersen
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Mette W. Frederiksen
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Katrine Domino
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
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58
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Andersen TL, Frederiksen MW, Domino K, Skrydstrup T. Direct Access to α,α-Difluoroacylated Arenes by Palladium-Catalyzed Carbonylation of (Hetero)Aryl Boronic Acid Derivatives. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604152] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Thomas L. Andersen
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Mette W. Frederiksen
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Katrine Domino
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the Interdisciplinary Nanoscience Center (iNANO); Aarhus University; Gustav Wieds Vej 14 8000 Aarhus C Denmark
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59
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Ivanova MV, Bayle A, Besset T, Pannecoucke X, Poisson T. New Prospects toward the Synthesis of Difluoromethylated Phosphate Mimics. Chemistry 2016; 22:10284-93. [DOI: 10.1002/chem.201601310] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Maria V. Ivanova
- Normandie Univ.; INSA Rouen; UNIROUEN, CNRS, COBRA; 76000 Rouen France
| | - Alexandre Bayle
- Normandie Univ.; INSA Rouen; UNIROUEN, CNRS, COBRA; 76000 Rouen France
| | - Tatiana Besset
- Normandie Univ.; INSA Rouen; UNIROUEN, CNRS, COBRA; 76000 Rouen France
| | | | - Thomas Poisson
- Normandie Univ.; INSA Rouen; UNIROUEN, CNRS, COBRA; 76000 Rouen France
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60
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Nickel-Catalyzed Difluoroalkylation of (Hetero)Arylborons with Unactivated 1-Bromo-1,1-difluoroalkanes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601351] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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61
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Xiao YL, Min QQ, Xu C, Wang RW, Zhang X. Nickel-Catalyzed Difluoroalkylation of (Hetero)Arylborons with Unactivated 1-Bromo-1,1-difluoroalkanes. Angew Chem Int Ed Engl 2016; 55:5837-41. [DOI: 10.1002/anie.201601351] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Indexed: 12/28/2022]
Affiliation(s)
- Yu-Lan Xiao
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Qiao-Qiao Min
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Chang Xu
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Ruo-Wen Wang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 China
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62
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Arlow SI, Hartwig JF. Synthesis of Aryldifluoroamides by Copper-Catalyzed Cross-Coupling. Angew Chem Int Ed Engl 2016; 55:4567-72. [PMID: 26929068 PMCID: PMC4956475 DOI: 10.1002/anie.201600105] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 02/11/2016] [Indexed: 11/06/2022]
Abstract
A copper-catalyzed coupling of aryl, heteroaryl, and vinyl iodides with α-silyldifluoroamides is reported. The reaction forms α,α-difluoro-α-aryl amides from electron-rich, electron-poor, and sterically hindered aryl iodides in high yield and tolerates a variety of functional groups. The aryldifluoroamide products can be transformed further to provide access to a diverse array of difluoroalkylarenes, including compounds of potential biological interest.
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Affiliation(s)
- Sophie I Arlow
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.
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63
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Arlow SI, Hartwig JF. Synthesis of Aryldifluoroamides by Copper‐Catalyzed Cross‐Coupling. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600105] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sophie I. Arlow
- Department of Chemistry University of California Berkeley CA 94720 USA
| | - John F. Hartwig
- Department of Chemistry University of California Berkeley CA 94720 USA
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64
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Li G, Wang T, Fei F, Su YM, Li Y, Lan Q, Wang XS. Nickel-Catalyzed Decarboxylative Difluoroalkylation of α,β-Unsaturated Carboxylic Acids. Angew Chem Int Ed Engl 2016; 55:3491-5. [DOI: 10.1002/anie.201511321] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Revised: 01/10/2016] [Indexed: 01/06/2023]
Affiliation(s)
- Gang Li
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Tao Wang
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Fan Fei
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Yi-Ming Su
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Yan Li
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Quan Lan
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Xi-Sheng Wang
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Chinese Academy of Sciences; Shanghai Institute of Organic Chemistry; Shanghai 200032 China
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65
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Li G, Wang T, Fei F, Su YM, Li Y, Lan Q, Wang XS. Nickel-Catalyzed Decarboxylative Difluoroalkylation of α,β-Unsaturated Carboxylic Acids. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511321] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gang Li
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Tao Wang
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Fan Fei
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Yi-Ming Su
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Yan Li
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Quan Lan
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Xi-Sheng Wang
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 China
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Chinese Academy of Sciences; Shanghai Institute of Organic Chemistry; Shanghai 200032 China
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66
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Xie J, Zhang T, Chen F, Mehrkens N, Rominger F, Rudolph M, Hashmi ASK. Gold-katalysierte hochselektive Photoredox-C(sp2
)-H-Difluoralkylierung und -Perfluoralkylierung von Hydrazonen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201508622] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jin Xie
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Tuo Zhang
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Fei Chen
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Nina Mehrkens
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Frank Rominger
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Matthias Rudolph
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
- Chemistry Department, Faculty of Science; King Abdulaziz University (KAU); Jeddah 21589 Saudi-Arabien
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67
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Xie J, Zhang T, Chen F, Mehrkens N, Rominger F, Rudolph M, Hashmi ASK. Gold-Catalyzed Highly Selective Photoredox C(sp(2) )-H Difluoroalkylation and Perfluoroalkylation of Hydrazones. Angew Chem Int Ed Engl 2016; 55:2934-8. [PMID: 26800002 DOI: 10.1002/anie.201508622] [Citation(s) in RCA: 217] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Indexed: 11/11/2022]
Abstract
The first gold-catalyzed photoredox C(sp(2) )-H difluoroalkylation and perfluoroalkylation of hydrazones with readily available RF -Br reagents is reported. The resulting gem-difluoromethylated and perfluoroalkylated hydrazones are highly functionalized, versatile molecules. A mild reduction of the coupling products can efficiently produce gem-difluoromethylated β-amino phosphonic acids and β-amino acid derivatives. In mechanistic studies, a difluoroalkyl radical intermediate was detected by an EPR spin-trapping experiment, indicating that a gold-catalyzed radical pathway is operating.
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Affiliation(s)
- Jin Xie
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Tuo Zhang
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Fei Chen
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Nina Mehrkens
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - A Stephen K Hashmi
- Chemistry Department, Faculty of Science, King Abdulaziz University (KAU), Jeddah, 21589, Saudi Arabia.
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68
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Prieto A, Melot R, Bouyssi D, Monteiro N. Palladium-Catalyzed C(sp2
)−H Alkylation of Aldehyde-Derived Hydrazones with Functionalized Difluoromethyl Bromides. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201510334] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Alexis Prieto
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Romain Melot
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Didier Bouyssi
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Nuno Monteiro
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
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69
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Prieto A, Melot R, Bouyssi D, Monteiro N. Palladium-Catalyzed C(sp2
)−H Alkylation of Aldehyde-Derived Hydrazones with Functionalized Difluoromethyl Bromides. Angew Chem Int Ed Engl 2015; 55:1885-9. [DOI: 10.1002/anie.201510334] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Alexis Prieto
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Romain Melot
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Didier Bouyssi
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Nuno Monteiro
- Université Lyon 1; Institut de Chimie et Biochimie Moléculaires et Supramoléculaires; CNRS UMR 5246, CPE Lyon; 43, Boulevard du 11 Novembre 1918 69622 Villeurbanne France
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70
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Douglas JJ, Albright H, Sevrin MJ, Cole KP, Stephenson CRJ. A Visible-Light-Mediated Radical Smiles Rearrangement and its Application to the Synthesis of a Difluoro-Substituted Spirocyclic ORL-1 Antagonist. Angew Chem Int Ed Engl 2015; 54:14898-902. [PMID: 26474077 PMCID: PMC4725294 DOI: 10.1002/anie.201507369] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Indexed: 12/20/2022]
Abstract
A visible-light-mediated radical Smiles rearrangement has been developed to address the challenging synthesis of the gem-difluoro group present in an opioid receptor-like 1 (ORL-1) antagonist that is currently in development for the treatment of depression and/or obesity. This method enables the direct and efficient introduction of the difluoroethanol motif into a range of aryl and heteroaryl systems, representing a new disconnection for the synthesis of this versatile moiety. When applied to the target compound, the photochemical step could be conducted on 15 g scale using industrially relevant [Ru(bpy)3Cl2] catalyst loadings of 0.01 mol %. This transformation is part of an overall five-step route to the antagonist that compares favorably to the current synthetic sequence and demonstrates, in this specific case, a clear strategic benefit of photocatalysis.
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Affiliation(s)
- James J Douglas
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/
- Small Molecule Design and Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46285 (USA)
| | - Haley Albright
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/
| | - Martin J Sevrin
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/
| | - Kevin P Cole
- Small Molecule Design and Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46285 (USA)
| | - Corey R J Stephenson
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/.
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71
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Visible-Light Photoredox-Catalyzed C−H Difluoroalkylation of Hydrazones through an Aminyl Radical/Polar Mechanism. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508698] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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72
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Xu P, Wang G, Zhu Y, Li W, Cheng Y, Li S, Zhu C. Visible-Light Photoredox-Catalyzed C-H Difluoroalkylation of Hydrazones through an Aminyl Radical/Polar Mechanism. Angew Chem Int Ed Engl 2015; 55:2939-43. [PMID: 26592803 DOI: 10.1002/anie.201508698] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 10/14/2015] [Indexed: 11/10/2022]
Abstract
An unprecedented visible-light-induced direct C-H bond difluoroalkylation of aldehyde-derived hydrazones was developed. This reaction represents a new way to synthesize substituted hydrazones. The salient features of this reaction include difluorinated hydrazone synthesis rather than classical amine synthesis, extremely mild reaction conditions, high efficiency, wide substrate scope, ease in further transformations of the products, and one-pot syntheses. Mechanistic analyses and theoretical calculations indicate that this reaction is enabled by a novel aminyl radical/polar crossover mechanism, with the aminyl radical being oxidized into the corresponding aminyl cation through a single electron transfer (SET) process.
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Affiliation(s)
- Pan Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Yuchen Zhu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Weipeng Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Yixiang Cheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 200032, P. R. China.
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73
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Percy JM, McCarter AW, Sewell AL, Sloan N, Kennedy AR, Hirst DJ. Developing the Saegusa–Ito Cyclisation for the Synthesis of Difluorinated Cyclohexenones. Chemistry 2015; 21:19119-27. [DOI: 10.1002/chem.201503653] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Jonathan M. Percy
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Adam W. McCarter
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Alan L. Sewell
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Nikki Sloan
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Alan R. Kennedy
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - David J. Hirst
- Flexible Discovery Unit, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY (UK)
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74
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Douglas JJ, Albright H, Sevrin MJ, Cole KP, Stephenson CRJ. A Visible‐Light‐Mediated Radical Smiles Rearrangement and its Application to the Synthesis of a Difluoro‐Substituted Spirocyclic ORL‐1 Antagonist. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507369] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- James J. Douglas
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/
- Small Molecule Design and Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46285 (USA)
| | - Haley Albright
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/
| | - Martin J. Sevrin
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/
| | - Kevin P. Cole
- Small Molecule Design and Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46285 (USA)
| | - Corey R. J. Stephenson
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109 (USA) www.umich.edu/∼crsgroup/
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75
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Gu Z, Zhang H, Xu P, Cheng Y, Zhu C. Visible-Light-Induced Radical Tandem Aryldifluoroacetylation of Cinnamamides: Access to Difluoroacetylated Quinolone-2-ones And 1-Azaspiro[4.5]decanes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500514] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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76
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Saulnier S, Ciardi M, Lopez-Carrillo V, Gualandi A, Cozzi PG. A Versatile Organocatalytic Approach for the Synthesis of Enantioenriched gem-Difluorinated Compounds. Chemistry 2015; 21:13689-95. [PMID: 26239866 DOI: 10.1002/chem.201502099] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Indexed: 11/11/2022]
Abstract
The combination of a practical and highly enantioselective organocatalytic reaction, which allows the stereoselective introduction of a benzodithiol group, with a fluorination step, gives a new and effective strategy for the stereoselective synthesis of difluorinated building blocks. The benzodithiol group is a versatile and chameleonic group that can be further functionalized before fluorination, giving customized and tailored useful synthetic strategies. As an example of the application of this facile strategy, the effective enantioselective synthesis of difluoroarundic acid is described.
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Affiliation(s)
- Steve Saulnier
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Moira Ciardi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy).,Université catholique de Louvain, Institute of Condensed Matter and Nanosciences, Croix du Sud, 1 bte L7.04.02, room a.241, 1348 Louvain-la-Neuve (Belgium)
| | - Veronica Lopez-Carrillo
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Andrea Gualandi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy).
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77
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Ivanova MV, Bayle A, Besset T, Poisson T, Pannecoucke X. Copper-Mediated Formation of Aryl, Heteroaryl, Vinyl and Alkynyl Difluoromethylphosphonates: A General Approach to Fluorinated Phosphate Mimics. Angew Chem Int Ed Engl 2015; 54:13406-10. [PMID: 26358947 DOI: 10.1002/anie.201507130] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Indexed: 11/06/2022]
Abstract
A general and efficient access to aryl, heteroaryl, vinyl and alkynyl difluoromethylphosphonates is described. The developed methodology using TMSCF2PO(OEt)2, iodonium salts and a copper salt provided a straightforward manifold to reach these highly relevant products. The reaction proved to be highly functional group tolerant and proceeded under mild conditions, giving the corresponding products in good to excellent yields. This method represents the first general synthetic route to this important class of fluorinated scaffolds, which are well-recognized as in vivo stable phosphate surrogates.
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Affiliation(s)
- Maria V Ivanova
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint-Aignan Cedex (France)
| | - Alexandre Bayle
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint-Aignan Cedex (France)
| | - Tatiana Besset
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint-Aignan Cedex (France)
| | - Thomas Poisson
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint-Aignan Cedex (France).
| | - Xavier Pannecoucke
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint-Aignan Cedex (France)
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78
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Ivanova MV, Bayle A, Besset T, Poisson T, Pannecoucke X. Copper‐Mediated Formation of Aryl, Heteroaryl, Vinyl and Alkynyl Difluoromethylphosphonates: A General Approach to Fluorinated Phosphate Mimics. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507130] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Maria V. Ivanova
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France)
| | - Alexandre Bayle
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France)
| | - Tatiana Besset
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France)
| | - Thomas Poisson
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France)
| | - Xavier Pannecoucke
- Normandie Univ., COBRA, UMR 6014 et FR 3038, Univ. Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France)
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79
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Belhomme MC, Besset T, Poisson T, Pannecoucke X. Recent Progress toward the Introduction of Functionalized Difluoromethylated Building Blocks onto C(sp2) and C(sp) Centers. Chemistry 2015; 21:12836-65. [DOI: 10.1002/chem.201501475] [Citation(s) in RCA: 268] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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80
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Shi SL, Buchwald SL. Palladium-Catalyzed Intramolecular CH Difluoroalkylation: Synthesis of Substituted 3,3-Difluoro-2-oxindoles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410471] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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81
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Shi SL, Buchwald SL. Palladium-catalyzed intramolecular C-H difluoroalkylation: synthesis of substituted 3,3-difluoro-2-oxindoles. Angew Chem Int Ed Engl 2014; 54:1646-50. [PMID: 25476241 DOI: 10.1002/anie.201410471] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 11/14/2014] [Indexed: 11/11/2022]
Abstract
The synthesis of 3,3-difluoro-2-oxindoles through a robust and efficient palladium-catalyzed CH difluoroalkylation is described. This process generates a broad range of difluorooxindoles from readily prepared starting materials. The use of BrettPhos as the ligand was crucial for high efficiency. Preliminary mechanistic studies suggest that oxidative addition is the rate-determining step for this process.
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Affiliation(s)
- Shi-Liang Shi
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
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82
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Feng Z, Min QQ, Zhao HY, Gu JW, Zhang X. A General Synthesis of Fluoroalkylated Alkenes by Palladium-Catalyzed Heck-Type Reaction of Fluoroalkyl Bromides. Angew Chem Int Ed Engl 2014; 54:1270-4. [DOI: 10.1002/anie.201409617] [Citation(s) in RCA: 246] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Indexed: 11/06/2022]
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83
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Feng Z, Min QQ, Zhao HY, Gu JW, Zhang X. A General Synthesis of Fluoroalkylated Alkenes by Palladium-Catalyzed Heck-Type Reaction of Fluoroalkyl Bromides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409617] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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84
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Korvorapun K, Soorukram D, Kuhakarn C, Tuchinda P, Reutrakul V, Pohmakotr M. Stereoselective Nucleophilic Addition of PhSCF2SiMe3to Chiral Cyclic Nitrones: Asymmetric Synthesis ofgem-Difluoromethylenated Polyhydroxypyrrolizidines and -indolizidines. Chem Asian J 2014; 10:948-68. [DOI: 10.1002/asia.201403023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Indexed: 01/22/2023]
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85
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Ilchenko NO, Tasch BOA, Szabó KJ. Mild silver-mediated geminal difluorination of styrenes using an air- and moisture-stable fluoroiodane reagent. Angew Chem Int Ed Engl 2014; 53:12897-901. [PMID: 25335468 PMCID: PMC4501311 DOI: 10.1002/anie.201408812] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 10/02/2014] [Indexed: 11/06/2022]
Abstract
An air- and moisture-stable fluoroiodane in the presence of AgBF4 is suitable for selective geminal difluorination of styrenes under mild reaction conditions. One of the CF bonds is formed by transfer of electrophilic fluorine from the hypervalent iodine reagent, while the other one arises from the tetrafluoroborate counterion of silver. Deuterium-isotope-labelling experiments and rearrangement of methyl styrene substrates suggest that the reaction proceeds through a phenonium ion intermediate.
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86
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Ilchenko NO, Tasch BOA, Szabó KJ. Mild Silver-Mediated Geminal Difluorination of Styrenes Using an Air- and Moisture-Stable Fluoroiodane Reagent. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408812] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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87
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88
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Yu YB, He GZ, Zhang X. Synthesis of α,α-Difluoromethylene Alkynes by Palladium-Catalyzedgem-Difluoropropargylation of Aryl and Alkenyl Boron Reagents. Angew Chem Int Ed Engl 2014; 53:10457-61. [DOI: 10.1002/anie.201405204] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/28/2014] [Indexed: 01/16/2023]
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89
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Yu YB, He GZ, Zhang X. Synthesis of α,α-Difluoromethylene Alkynes by Palladium-Catalyzedgem-Difluoropropargylation of Aryl and Alkenyl Boron Reagents. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405204] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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90
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Xiao YL, Guo WH, He GZ, Pan Q, Zhang X. Nickel-Catalyzed Cross-Coupling of Functionalized Difluoromethyl Bromides and Chlorides with Aryl Boronic Acids: A General Method for Difluoroalkylated Arenes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405653] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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91
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Xiao YL, Guo WH, He GZ, Pan Q, Zhang X. Nickel-catalyzed cross-coupling of functionalized difluoromethyl bromides and chlorides with aryl boronic acids: a general method for difluoroalkylated arenes. Angew Chem Int Ed Engl 2014; 53:9909-13. [PMID: 25044391 DOI: 10.1002/anie.201405653] [Citation(s) in RCA: 200] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Indexed: 11/05/2022]
Abstract
Transition-metal-catalyzed difluoroalkylation of aromatics remains challenging despite the importance of difluoroalkylated arenes in medicinal chemistry. Herein, the first successful example of nickel-catalyzed difluoroalkylation of aryl boronic acids is described. The reaction allows access to a variety of functionalized difluoromethyl bromides and chlorides, and paves the way to highly cost-efficient synthesis of a wide range of difluoroalkylated arenes. The notable features of this protocol are its high generality, excellent functional-group compatibility, low-cost nickel-catalyst, and practicality for gram-scale production, thus providing a facile method for applications in drug discovery and development.
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Affiliation(s)
- Yu-Lan Xiao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032 (China)
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92
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Xu P, Guo S, Wang L, Tang P. Silver-Catalyzed Oxidative Activation of Benzylic CH Bonds for the Synthesis of Difluoromethylated Arenes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400225] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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93
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Xu P, Guo S, Wang L, Tang P. Silver-Catalyzed Oxidative Activation of Benzylic CH Bonds for the Synthesis of Difluoromethylated Arenes. Angew Chem Int Ed Engl 2014; 53:5955-8. [DOI: 10.1002/anie.201400225] [Citation(s) in RCA: 184] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/17/2014] [Indexed: 12/26/2022]
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