1
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Gladkov AA, Levin VV, Dilman AD. Photoredox Activation of Fluorinated Organozinc Reagents: Hydrofluoroalkylation of Unactivated and Electron Deficient Alkenes. J Org Chem 2024; 89:11826-11835. [PMID: 39059413 DOI: 10.1021/acs.joc.4c01623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Hydrofluoroalkylation of alkenes with organozinc reagents under photocatalytic conditions is described. The fluorinated alkyl radicals were generated from organozincs by the single electron oxidation of the carbon-zinc bond. The radical addition step is followed either by hydrogen atom transfer for unactivated olefins or by a reduction/protonation sequence for strongly accepting arylidenemalononitriles.
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Affiliation(s)
- Anton A Gladkov
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
- Lomonosov Moscow State University, Department of Chemistry, 119991, Moscow, Leninskie Gory 1-3, Russian Federation
| | - Vitalij V Levin
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
| | - Alexander D Dilman
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
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2
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Chen X, Liu Y, Zhang S, Li Y, Zhou XY, Yu X, Feng X, Yamamoto Y, Bao M. A Difluoromethylation Reagent: Access to Difluoromethyl Arenes through Palladium Catalysis. Org Lett 2024; 26:6024-6029. [PMID: 38984734 DOI: 10.1021/acs.orglett.4c02161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
A new radical difluoromethylation was developed by using inexpensive and readily available difluoroacetic anhydride and N-phenyl-4-methylbenzenesulfonamide for the first time. The reaction of arylboronic acids with the new difluoromethylation reagent, N-phenyl-N-tosyldifluoroacetamide, proceeded smoothly in the presence of palladium catalyst to provide difluoromethylarenes in satisfactory to excellent yields. The electronic property (electron-donating or electron-withdrawing) of the substituent linked to the aromatic ring did not considerably influence the reactivity of arylboronic acid. Various groups, including the synthetically useful functional groups Cl, CN, and NO2, were tolerated well under the current reaction conditions.
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Affiliation(s)
- Xia Chen
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Yining Liu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yang Li
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiao-Yu Zhou
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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3
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Jiang X, Song Y, Peng J, Zhong Z, Chen L, Zeng X. Oxidant- and Base-Free, Copper-Catalyzed Difluoromethylation of Haloalkynes. Org Lett 2023; 25:8127-8132. [PMID: 37922337 DOI: 10.1021/acs.orglett.3c03198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
We report herein a highly efficient copper-catalyzed protocol for the transformation of haloalkynes to the corresponding difluoromethylated alkynes. This scalable protocol exhibits a broad substrate scope and excellent functional group tolerance, enabling the late-stage difluoromethylation of bioactive molecules. Additionally, the strategy of utilizing the difluoromethylalkynes in gram-scale reactions and multiple transformations has proven to be highly valuable in synthetic chemistry.
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Affiliation(s)
- Xujuan Jiang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Yanshan Song
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Junjie Peng
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Zhiying Zhong
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Li Chen
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
| | - Xiaojun Zeng
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, China
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4
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Zhao H, Gu Y, Shen Q. [(SIPr)Ag(CF 2 H)]: A Shelf-Stable, Versatile Difluoromethylation Reagent. CHEM REC 2023; 23:e202300124. [PMID: 37194962 DOI: 10.1002/tcr.202300124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/05/2023] [Indexed: 05/18/2023]
Abstract
Due to its unique physical and electrophilic properties, the difluoromethyl group (-CF2 H) has been playing an irreplaceable role in the field of pharmaceutical and agrochemical industry. Methods that could efficiently incorporate the difluoromethyl group into the target molecules are increasing in the recent years. Developing a stable and efficient difluoromethylating reagent is thus highly attractive. In this review, we describe the development of a nucleophilic difluoromethylation reagent [(SIPr)Ag(CF2 H)], including its elemental reaction, difluoromethylation reaction with different types of electrophiles, and its application in the synthesis of a nucleophilic and an electrophilic difluoromethylthiolating reagent.
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Affiliation(s)
- Haiwei Zhao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Yang Gu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Qilong Shen
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
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5
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Wu S, Cheng X, Yao C, Yang W, Zheng J. Synthesis of CF
3
, CF
2
H‐Substituted, Epoxide‐Fused Heterocycles with Prop‐2‐ynylsulfonium salts. ASIAN J ORG CHEM 2023. [DOI: 10.1002/ajoc.202300023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2023]
Affiliation(s)
- Shitong Wu
- School of Chemical and Chemical Engineering NanChang University NanChang 330031 China
| | - Xi Cheng
- School of Chemical and Chemical Engineering NanChang University NanChang 330031 China
| | - Changguang Yao
- School of Chemical and Chemical Engineering NanChang University NanChang 330031 China
| | - Weiran Yang
- School of Chemical and Chemical Engineering NanChang University NanChang 330031 China
| | - Jing Zheng
- School of Chemical and Chemical Engineering NanChang University NanChang 330031 China
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6
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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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7
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Choi K, Mormino MG, Kalkman ED, Park J, Hartwig JF. Palladium-Catalyzed Aryldifluoromethylation of Aryl Halides with Aryldifluoromethyl Trimethylsilanes. Angew Chem Int Ed Engl 2022; 61:e202208204. [PMID: 35960816 PMCID: PMC9530024 DOI: 10.1002/anie.202208204] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Indexed: 11/12/2022]
Abstract
Diaryl difluoromethanes are valuable targets for medicinal chemistry because they are bioisosteres of diaryl ethers and can function as replacements for diaryl methane, ketone, and sulfone groups. However, methods to prepare diaryl difluoromethanes are scarce, especially methods starting from abundant aryl halides. We report the Pd-catalyzed aryldifluoromethylation of aryl halides with aryldifluoromethyl trimethylsilanes (TMSCF2 Ar). The reaction occurs when the catalyst contains a simple, but unusual, dialkylaryl phosphine ligand that promotes transmetallation of the silane. Computational studies show that reductive elimination following transmetallation occurs with a low barrier, despite the fluorine atoms on the α-carbon, due to coordination of the difluorobenzyl π-system to palladium. The co-development of a cobalt-catalyzed synthesis of the silanes broadened the scope of the process including several applications to the synthesis biologically relevant diaryl difluoromethanes.
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Affiliation(s)
- Kyoungmin Choi
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Michael G. Mormino
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Eric D. Kalkman
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - John Park
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - John F. Hartwig
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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8
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Choi K, Mormino MG, Kalkman ED, Park J, Hartwig JF. Palladium‐Catalyzed Aryldifluoromethylation of Aryl Halides with Aryldifluoromethyl Trimethylsilanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208204] [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)
- Kyoungmin Choi
- University of California Berkeley Chemistry UNITED STATES
| | | | | | - John Park
- University of California Berkeley Chemistry UNITED STATES
| | - John F. Hartwig
- University of California Department of Chemistry 718 LATIMER HALL #1460 94720-1460 Berkeley UNITED STATES
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9
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Horbaczewskyj CS, Fairlamb IJS. Pd-Catalyzed Cross-Couplings: On the Importance of the Catalyst Quantity Descriptors, mol % and ppm. Org Process Res Dev 2022; 26:2240-2269. [PMID: 36032362 PMCID: PMC9396667 DOI: 10.1021/acs.oprd.2c00051] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 12/26/2022]
Abstract
![]()
This Review examines parts per million (ppm) palladium
concentrations
in catalytic cross-coupling reactions and their relationship with
mole percentage (mol %). Most studies in catalytic cross-coupling
chemistry have historically focused on the concentration ratio between
(pre)catalyst and the limiting reagent (substrate), expressed as mol
%. Several recent papers have outlined the use of “ppm level”
palladium as an alternative means of describing catalytic cross-coupling
reaction systems. This led us to delve deeper into the literature
to assess whether “ppm level” palladium is a practically
useful descriptor of catalyst quantities in palladium-catalyzed cross-coupling
reactions. Indeed, we conjectured that many reactions could, unknowingly,
have employed low “ppm levels” of palladium (pre)catalyst,
and generally, what would the spread of ppm palladium look like across
a selection of studies reported across the vast array of the cross-coupling
chemistry literature. In a few selected examples, we have examined
other metal catalyst systems for comparison with palladium.
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Affiliation(s)
| | - Ian J. S. Fairlamb
- University of York, Heslington, York, North Yorkshire, YO10 5DD, United Kingdom
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10
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Gedde OR, Bonde A, Golbækdal PI, Skrydstrup T. Pd‐Catalyzed Difluoromethylations of Aryl Boronic Acids, Halides, and Pseudohalides with ICF
2
H Generated ex Situ. Chemistry 2022; 28:e202200997. [PMID: 35388933 PMCID: PMC9321866 DOI: 10.1002/chem.202200997] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Indexed: 02/02/2023]
Abstract
An expedient ex‐situ generation of difluoroiodomethane (DFIM) and its immediate use in a Pd‐catalyzed difluoromethylation of aryl boronic acids and ester derivatives in a two‐chamber reactor is reported. Heating a solution of bromodifluoroacetic acid with sodium iodide in sulfolane proved to be effective for the generation of near stoichiometric amounts of DFIM for the ensuing catalytic coupling step. A two‐step difluoromethylation of aryl (pseudo)halides with tetrahydroxydiboron as a low‐cost reducing agent, both promoted by Pd catalysis, proved effective to install this fluorine‐containing C1 group onto several pharmaceutically relevant molecules. Finally, the method proved adaptable to deuterium incorporation by simply adding D2O to the DFIM‐generating chamber.
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Affiliation(s)
- Oliver R. Gedde
- Carbon Dioxide Activation Center (CADIAC) The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Andreas Bonde
- Carbon Dioxide Activation Center (CADIAC) The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Peter I. Golbækdal
- Carbon Dioxide Activation Center (CADIAC) The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Gustav Wieds Vej 14 8000 Aarhus C Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC) The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Gustav Wieds Vej 14 8000 Aarhus C Denmark
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11
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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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12
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Li H, Wang F, Zhu S, Chu L. Selective Fluoromethyl Couplings of Alkynes via Nickel Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Huan Li
- State Key Laboratory for Modification of Chemical Fibers Sand Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China
| | - Fang Wang
- State Key Laboratory for Modification of Chemical Fibers Sand Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China
| | - Shengqing Zhu
- State Key Laboratory for Modification of Chemical Fibers Sand Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China
| | - Lingling Chu
- State Key Laboratory for Modification of Chemical Fibers Sand Polymer Materials Center for Advanced Low-Dimension Materials College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China
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13
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Li H, Wang F, Zhu S, Chu L. Selective Fluoromethyl Couplings of Alkynes via Nickel Catalysis*. Angew Chem Int Ed Engl 2021; 61:e202116725. [PMID: 34962343 DOI: 10.1002/anie.202116725] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Indexed: 11/09/2022]
Abstract
We describe here a Ni-catalyzed intermolecular carbo-fluoromethylation of alkynes with aliphatic halides and fluoromethyl halides (BrCF 2 H and ICH 2 F) in the presence of zinc, enabling the facile and selective access to a diverse range of biologically valuable CF 2 H/CH 2 F-incorporated alkenes with excellent regio- and stereo-selectivity. Notably, merging intramolecular radical cyclization with fluoromethyl coupling enables the expedient constructions of CF 2 H/CH 2 F-incorporated lactones and lactams with high efficiency and selectivity. Mechanistic studies disclose that this catalytic protocol proceeds via a radical addition to an alkyne followed by selective coupling with the fluoromethyl unit.
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Affiliation(s)
- Huan Li
- Donghua University - Songjiang Campus: Donghua University, CALM, 2999 NORTH RENMIN ROAD, 201620, Shanghai, CHINA
| | - Fang Wang
- Donghua University - Songjiang Campus: Donghua University, CALM, 2999 NORTH RENMIN ROAD, 201620, Shanghai, CHINA
| | - Shengqing Zhu
- Donghua University - Songjiang Campus: Donghua University, CALM, 2999 NORTH RENMIN ROAD, 201620, Shanghai, CHINA
| | - Lingling Chu
- Donghua University, Center for Advanced Low-Dimension Materials, 2999 Renmin Road, Songjiang District, 201620, Shanghai, CHINA
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14
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Taillemaud S, Charette AB. Spectroscopic Characterization of Heterohalogenic Dihalomethylzinc Carbenoids: Application to a More Efficient Chlorocyclopropanation Reaction. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sylvain Taillemaud
- Centre in Green Chemistry and Catalysis, Department of Chemistry, Université de Montréal, 1375, av. Thérèse Lavoie-Roux, Montréal, Québec H2V 0B3, Canada
| | - André B. Charette
- Centre in Green Chemistry and Catalysis, Department of Chemistry, Université de Montréal, 1375, av. Thérèse Lavoie-Roux, Montréal, Québec H2V 0B3, Canada
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15
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Cai A, Yan W, Wang C, Liu W. Copper-Catalyzed Difluoromethylation of Alkyl Iodides Enabled by Aryl Radical Activation of Carbon-Iodine Bonds. Angew Chem Int Ed Engl 2021; 60:27070-27077. [PMID: 34652873 DOI: 10.1002/anie.202111993] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Indexed: 01/07/2023]
Abstract
The engagement of unactivated alkyl halides in copper-catalyzed cross-coupling reactions has been historically challenging, due to their low reduction potential and the slow oxidative addition of copper(I) catalysts. In this work, we report a novel strategy that leverages the halogen abstraction ability of aryl radicals, thereby engaging a diverse range of alkyl iodides in copper-catalyzed Negishi-type cross-coupling reactions at room temperature. Specifically, aryl radicals generated via copper catalysis efficiently initiate the cleavage of the carbon-iodide bonds of alkyl iodides. The alkyl radicals thus generated enter the copper catalytic cycles to couple with a difluoromethyl zinc reagent, thus furnishing the alkyl difluoromethane products. This unprecedented Negishi-type difluoromethylation approach has been applied to the late-stage modification of densely functionalized pharmaceutical agents and natural products.
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Affiliation(s)
- Aijie Cai
- Department of Chemistry, University of Cincinnati, Cincinnati, OH, 45221, USA
| | - Wenhao Yan
- Department of Chemistry, University of Cincinnati, Cincinnati, OH, 45221, USA
| | - Chao Wang
- Department of Chemistry, University of Cincinnati, Cincinnati, OH, 45221, USA
| | - Wei Liu
- Department of Chemistry, University of Cincinnati, Cincinnati, OH, 45221, USA
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16
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Cai A, Yan W, Wang C, Liu W. Copper‐Catalyzed Difluoromethylation of Alkyl Iodides Enabled by Aryl Radical Activation of Carbon–Iodine Bonds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Aijie Cai
- Department of Chemistry University of Cincinnati Cincinnati OH 45221 USA
| | - Wenhao Yan
- Department of Chemistry University of Cincinnati Cincinnati OH 45221 USA
| | - Chao Wang
- Department of Chemistry University of Cincinnati Cincinnati OH 45221 USA
| | - Wei Liu
- Department of Chemistry University of Cincinnati Cincinnati OH 45221 USA
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17
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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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18
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Li X, Li J, Wang X, Wu L, Wang Y, Maestri G, Malacria M, Liu X. Photoelectric properties of aromatic triangular tri-palladium complexes and their catalytic applications in the Suzuki-Miyaura coupling reaction. Dalton Trans 2021; 50:11834-11842. [PMID: 34369501 DOI: 10.1039/d1dt01597d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The photoelectric properties and catalytic activities of substituted triphenylphosphine and sulfur/selenium ligand supported aromatic triangular tri-palladium complexes 1-4, abbreviated as [Pd3]+, were investigated. The cyclic voltammogram of [Pd3]+ in CH3CN-nBu4NPF6 showed a single quasi-reversible wave which was consistent with their robust property and provided preliminary proof for their electron transfer processes in catalysis. With excitation at 267 nm, [Pd3]+ exhibited strong ratiometric fluorescence at 550 and 780 nm at a temperature gradient from 77 K to 287 K. These peculiar triangular tri-palladium complexes showed excellent catalytic activities and exclusive reactivity with aryl iodides over the other halogenated aromatics in the Suzuki-Miyaura coupling reaction. The electronic and steric hindrance effects of substituents on the aryl iodides and aryl boronic acids including heteroaromatics like pyridine, pyrazine and thiophenes were explored and most substrates achieved up to 99% of yields. (2-[1,1'-Biphenyl]-2-ylbenzothiazole) which was analogous to the selective cyclooxygenase-2 (COX-2) inhibitors was also synthesized with our tri-palladium catalyst and gave good isolated yield (94%). The study of the catalytic process revealed that the mechanism of the reaction may involve the replacement of the sulphur ligand on [Pd3]+ by iodine from aryl iodides, which was beneficial for the matching of C-I bond energy.
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Affiliation(s)
- Xujun Li
- Department of chemistry and chemical engineering, Liaocheng University, 252059, Liaocheng, China.
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19
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Cai A, Yan W, Liu W. Aryl Radical Activation of C-O Bonds: Copper-Catalyzed Deoxygenative Difluoromethylation of Alcohols. J Am Chem Soc 2021; 143:9952-9960. [PMID: 34180233 DOI: 10.1021/jacs.1c04254] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Given their ubiquity in natural products and pharmaceuticals, alcohols represent one of the most attractive starting materials for the construction of C-C bonds. We report herein the first catalytic strategy to harness the reactivity of aryl radicals for the activation of C-O bonds in alcohol-derived xanthate esters, allowing for the discovery of the first catalytic deoxygenative difluoromethylation reaction. Under copper-catalyzed conditions, a wide variety of alkyl xanthate esters, readily synthesized from alcohol feedstocks, were activated by catalytically generated aryl radicals and were converted to the alkyl-difluoromethane products via alkyl radical intermediates. This scalable protocol exhibits a broad substrate scope and functional group tolerance, enabling late-stage modification of complex pharmaceutical agents. A one-pot protocol has been developed that allows for the direct use of free alcohols without purification of the xanthate esters. Mechanistic studies are consistent with the hypothesis of aryl radicals being formed and initiating the cleavage of the C-O bonds of xanthate esters, to generate alkyl radicals as the key intermediates. This aryl radical activation approach represents a new strategy for the activation of alcohols as cross-coupling partners.
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Affiliation(s)
- Aijie Cai
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Wenhao Yan
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Wei Liu
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
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20
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Zheng Y, Xie ZZ, He XC, Chen YS, Cheng WS, Chen K, Xiang HY, Chen XQ, Yang H. Phosphonium Ylide-Mediated Programmable Fluorination to Access Mono- and Difluoromethylarenes. Org Lett 2021; 23:2538-2542. [DOI: 10.1021/acs.orglett.1c00457] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu Zheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xian-Chen He
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yan-Shan Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Wen-Shuo Cheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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21
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Brigham CE, Malapit CA, Lalloo N, Sanford MS. Nickel-Catalyzed Decarbonylative Synthesis of Fluoroalkyl Thioethers. ACS Catal 2020; 10:8315-8320. [PMID: 34306801 DOI: 10.1021/acscatal.0c02950] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This report describes the development of a nickel-catalyzed decarbonylative reaction for the synthesis of fluoroalkyl thioethers (RFSR) from the corresponding thioesters. Readily available, inexpensive, and stable fluoroalkyl carboxylic acids (RFCO2H) serve as the fluoroalkyl (RF) source in this transformation. Stoichiometric organometallic studies reveal that RF-S bond-forming reductive elimination is a challenging step in the catalytic cycle. This led to the identification of diphenylphosphinoferrocene as the optimal ligand for this transformation. Ultimately, this method was applied to the construction of diverse fluoroalkyl thioethers (RFSR), with R = both aryl and alkyl.
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Affiliation(s)
- Conor E. Brigham
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Christian A. Malapit
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Naish Lalloo
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Melanie S. Sanford
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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22
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Monfette S, Fang YQ, Bio MM, Brown AR, Crouch IT, Desrosiers JN, Duan S, Hawkins JM, Hayward CM, Peperni N, Rainville JP. Continuous Process for Preparing the Difluoromethylating Reagent [(DMPU)2Zn(CF2H)2] and Improved Synthesis of the ICHF2 Precursor. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00089] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastien Monfette
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
| | - Yuan-Qing Fang
- Snapdragon Chemistry Inc., 300 2nd Ave, Waltham, Massachusetts 02451, United States
| | - Matthew M. Bio
- Snapdragon Chemistry Inc., 300 2nd Ave, Waltham, Massachusetts 02451, United States
| | - Adam R. Brown
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
| | - Ian T. Crouch
- Snapdragon Chemistry Inc., 300 2nd Ave, Waltham, Massachusetts 02451, United States
| | - Jean-Nicolas Desrosiers
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
| | - Shengquan Duan
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
| | - Joel M. Hawkins
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
| | - Cheryl M. Hayward
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
| | - Nikita Peperni
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
| | - Joseph P. Rainville
- Process Chemistry, Chemical R&D, Pfizer Worldwide R&D, Eastern Point Rd, Groton, Connecticut 06340, United States
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23
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Zhao H, Herbert S, Kinzel T, Zhang W, Shen Q. Two Ligands Transfer from Ag to Pd: En Route to (SIPr)Pd(CF 2H)(X) and Its Application in One-Pot C-H Borylation/Difluoromethylation. J Org Chem 2020; 85:3596-3604. [PMID: 31970986 DOI: 10.1021/acs.joc.9b03296] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A process for the concurrent transfer of both the NHC ligand and the difluoromethyl group from [(SIPr)Ag(CF2H)] to PdX2 (X = Cl, OAc, and OPiv) for the preparation of [(SIPr)Pd(CF2H)X] complexes is described. These complexes were air-stable and easily underwent transmetalation with aryl pinacol boronate/reductive elimination to generate ArCF2H in high yields. Based on this discovery, the first one-pot C-H borylation and difluoromethylation process for the preparation of difluoromethylated (hetero)arenes was developed.
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Affiliation(s)
- Haiwei Zhao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Simon Herbert
- Bayer AG, Research & Development, Pharmaceuticals, 178 Müllerstraße, Berlin 13342, Germany
| | - Tom Kinzel
- Open Innovation Center China, Bayer Center, Bayer Pharmaceuticals, Bei Dong San Han 27, Beijing 100020, P. R. China
| | - Wei Zhang
- Centre for Green Chemistry and Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Qilong Shen
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
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24
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Trifonov AL, Panferova LI, Levin VV, Kokorekin VA, Dilman AD. Visible-Light-Promoted Iododifluoromethylation of Alkenes via (Phosphonio)difluoromethyl Radical Cation. Org Lett 2020; 22:2409-2413. [DOI: 10.1021/acs.orglett.0c00604] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Alexey L. Trifonov
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991 Moscow, Russian Federation
- D. Mendeleev University of Chemical Technology of Russia, Higher Chemical College, Miusskaya sq. 9, 125047 Moscow, Russian Federation
| | - Liubov I. Panferova
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991 Moscow, Russian Federation
| | - Vitalij V. Levin
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991 Moscow, Russian Federation
| | - Vladimir A. Kokorekin
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991 Moscow, Russian Federation
| | - Alexander D. Dilman
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky prosp. 47, 119991 Moscow, Russian Federation
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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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Dong DQ, Yang H, Shi JL, Si WJ, Wang ZL, Xu XM. Promising reagents for difluoroalkylation. Org Chem Front 2020. [DOI: 10.1039/d0qo00567c] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review describes recent advances in difluoroalkylation reactions using different substrates.
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Affiliation(s)
- Dao-Qing Dong
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Huan Yang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Jun-Lian Shi
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Wen-Jia Si
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Zu-Li Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Xin-Ming Xu
- College of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- China
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27
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Kalanthoden AN, Shaikh MN, Aziz MA, Rani SK. Pd Nanoparticles Decorated on Jute Sticks: Dip‐Catalyst of Suzuki‐Miyaura and Mizoroki‐Heck C–C Bond Formation Reactions in Water. ChemistrySelect 2019. [DOI: 10.1002/slct.201903423] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - M. Nasiruzzaman Shaikh
- Center of Research Excellence in Nanotechnology (CENT)King Fahd University of Petroleum and Minerals (KFUPM) Saudi Arabia
| | - Md. Abdul Aziz
- Center of Research Excellence in Nanotechnology (CENT)King Fahd University of Petroleum and Minerals (KFUPM) Saudi Arabia
| | - S. Kutti Rani
- BSA Crescent Institute of Science and Technology GST Road, Chennai, Tamil Nadu India
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28
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Hisano N, Kimura D, Mori K. Synthesis of Seven-membered Ring Containing Difluoromethylene Unit by Sc(OTf)3-catalyzed Activation of Single C–F Bond in CF3 Group. CHEM LETT 2019. [DOI: 10.1246/cl.190280] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoya Hisano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Daiki Kimura
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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29
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Chiral copper-catalyzed enantioselective Michael difluoromethylation of arylidene meldrum's acids with (difluoromethyl)zinc reagents. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Fuchibe K, Watanabe S, Takao G, Ichikawa J. Synthesis of (difluoromethyl)naphthalenes using the ring construction strategy: C-C bond formation on the central carbon of 1,1-difluoroallenes via Pd-catalyzed insertion. Org Biomol Chem 2019; 17:5047-5054. [PMID: 31049538 DOI: 10.1039/c9ob00540d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The insertion of 1,1-difluoroallenes was carried out to form a C-C bond exclusively on their central carbon. o-Bromophenyl-bearing 1,1-difluoroallenes underwent intramolecular insertion in the presence of a palladium catalyst. Regioselective C-C bond formation occurred to form a six-membered carbocycle, leading to pharmaceutically and agrochemically promising difluoromethylated naphthalenes.
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Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
| | - Shumpei Watanabe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
| | - Go Takao
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
| | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
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31
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Geri JB, Aguilera EY, Szymczak NK. Difluoromethane as a precursor to difluoromethyl borates. Chem Commun (Camb) 2019; 55:5119-5122. [PMID: 30969308 DOI: 10.1039/c9cc01565e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Difluoromethane (CF2H2) is an ecologically-friendly refrigerant which holds promise as a source of CF2H-. However, the weak acidity (pKa = 35-41) and low stability of the conjugate base have prevented its utilization as a chemical feedstock. In this manuscript, we use a Lewis pair approach to deprotonate CF2H2 and capture CF2H- as R3B-CF2H- adducts. One reagent can be used as a base-free Suzuki reagent in palladium-mediated difluoromethylation, where CF2H- transfer is templated by precoordination to an azaborine derived R3B-CF2H- reagent.
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Affiliation(s)
- Jacob B Geri
- Department of Chemistry, University of Michigan Ann Arbor, 930 N. University, Ann Arbor, MI 48109, USA.
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32
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Nitta J, Motohashi H, Aikawa K, Mikami K. Palladium‐Catalyzed Negishi Cross‐Coupling Reaction of Difluoroiodomethane with Arylzinc Reagents. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Junki Nitta
- Department of Chemical Science and EngineeringSchool of Materials and Chemical TechnologyTokyo Institute of Technology O-okayama, Meguro-ku, Tokyo 152-8552 Japan
| | - Hirotaka Motohashi
- Department of Chemical Science and EngineeringSchool of Materials and Chemical TechnologyTokyo Institute of Technology O-okayama, Meguro-ku, Tokyo 152-8552 Japan
| | - Kohsuke Aikawa
- Department of Chemical Science and EngineeringSchool of Materials and Chemical TechnologyTokyo Institute of Technology O-okayama, Meguro-ku, Tokyo 152-8552 Japan
| | - Koichi Mikami
- Department of Chemical Science and EngineeringSchool of Materials and Chemical TechnologyTokyo Institute of Technology O-okayama, Meguro-ku, Tokyo 152-8552 Japan
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33
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Motohashi H, Kato M, Mikami K. Ligand-Less Iron-Catalyzed Aromatic Cross-Coupling Difluoromethylation of Grignard Reagents with Difluoroiodomethane. J Org Chem 2019; 84:6483-6490. [DOI: 10.1021/acs.joc.9b00585] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hirotaka Motohashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Miki Kato
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Koichi Mikami
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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34
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Ferguson DM, Malapit CA, Bour JR, Sanford MS. Palladium-Catalyzed Difluoromethylation of Aryl Chlorides and Bromides with TMSCF 2H. J Org Chem 2019; 84:3735-3740. [PMID: 30789266 DOI: 10.1021/acs.joc.9b00324] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A palladium-catalyzed cross-coupling of aryl chlorides/bromides with TMSCF2H is described. Two different catalysts, Pd(dba)2/BrettPhos and Pd(P tBu3)2, are demonstrated and provide a variety of difluoromethylated arenes in good yields.
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Affiliation(s)
- Devin M Ferguson
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
| | - Christian A Malapit
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
| | - James R Bour
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
| | - Melanie S Sanford
- Department of Chemistry , University of Michigan , 930 North University Avenue , Ann Arbor , Michigan 48109 , United States
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35
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Melvin PR, Ferguson DM, Schimler SD, Bland DC, Sanford MS. Room Temperature Deoxyfluorination of Benzaldehydes and α-Ketoesters with Sulfuryl Fluoride and Tetramethylammonium Fluoride. Org Lett 2019; 21:1350-1353. [DOI: 10.1021/acs.orglett.9b00054] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrick R. Melvin
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Devin M. Ferguson
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Sydonie D. Schimler
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Douglas C. Bland
- CP PD&P Process Chemistry, Corteva Agriscience, Agriculture Division of DowDuPont, 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Melanie S. Sanford
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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36
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Fan Z, Yang S, Peng X, Zhang C, Han J, Chen J, Deng H, Shao M, Zhang H, Cao W. Metal-free synthesis of 2-difluoromethylated quinolines via DBU-promoted cascade michael addition / cyclization of methyl 4,4-difluorobut-2-ynoate with 2-aminobenzonitriles. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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37
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Zhao H, Ma G, Xie X, Wang Y, Hao J, Wan W. Pd(ii)-Catalyzed decarboxylative meta-C–H difluoromethylation. Chem Commun (Camb) 2019; 55:3927-3930. [DOI: 10.1039/c9cc00984a] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Palladium(ii)-catalyzed decarboxylative meta-C–H difluoromethylation reactions have been developed. Initial mechanistic studies disclosed that a migratory insertion would be involved in this meta-selective C–H functionalization.
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Affiliation(s)
- Huaxin Zhao
- Department of Chemistry
- Shanghai University
- Shanghai
- China
| | - Guobin Ma
- School of Science
- Shanghai University
- China
| | - Xiaojuan Xie
- Department of Chemistry
- Shanghai University
- Shanghai
- China
| | - Yong Wang
- Department of Chemistry
- Shanghai University
- Shanghai
- China
| | - Jian Hao
- Department of Chemistry
- Shanghai University
- Shanghai
- China
| | - Wen Wan
- Department of Chemistry
- Shanghai University
- Shanghai
- China
- Key Laboratory of Organofluorine Chemistry
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38
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Pan F, Boursalian GB, Ritter T. Palladium‐Catalyzed Decarbonylative Difluoromethylation of Acid Chlorides at Room Temperature. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811139] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fei Pan
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Gregory B. Boursalian
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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39
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Pan F, Boursalian GB, Ritter T. Palladium‐Catalyzed Decarbonylative Difluoromethylation of Acid Chlorides at Room Temperature. Angew Chem Int Ed Engl 2018; 57:16871-16876. [DOI: 10.1002/anie.201811139] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/19/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Fei Pan
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Gregory B. Boursalian
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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40
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Tissot M, Body N, Petit S, Claessens J, Genicot C, Pasau P. Synthesis of Electron-Deficient Heteroaromatic 1,3-Substituted Cyclobutyls via Zinc Insertion/Negishi Coupling Sequence under Batch and Automated Flow Conditions. Org Lett 2018; 20:8022-8025. [DOI: 10.1021/acs.orglett.8b03588] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthieu Tissot
- Global Chemistry, UCB New Medicines, UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
| | - Nathalie Body
- Department Chimie Organique, Université catholique de Louvain-la-Neuve, Place Louis Pasteur, 1, 1348 Louvain-la-Neuve, Belgium
| | - Sylvain Petit
- Chemical Process Research and Development, UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
| | - Jehan Claessens
- Global Chemistry, UCB New Medicines, UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
| | - Christophe Genicot
- Global Chemistry, UCB New Medicines, UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
| | - Patrick Pasau
- Global Chemistry, UCB New Medicines, UCB Biopharma SPRL, Avenue de l’industrie, 1420 Braine l’Alleud, Belgium
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41
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Cobalt-catalyzed difluoroalkylation of tertiary aryl ketones for facile synthesis of quaternary alkyl difluorides. Nat Commun 2018; 9:4951. [PMID: 30470757 PMCID: PMC6251884 DOI: 10.1038/s41467-018-07525-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 11/08/2018] [Indexed: 11/08/2022] Open
Abstract
The selective incorporation of gem-difluoroalkyl groups into biologically active molecules has long been used as an efficient strategy for drug design and discovery. However, the catalytic C(sp3)-CF2 bond-forming cross-coupling reaction for selective incorporation of difluoromethylene group into diverse alkyl chains, especially more sterically demanding secondary and tertiary functionalized alkanes, still remains as a major challenge. Herein, we describe a cobalt-catalyzed difluoroalkylation of tertiary aryl ketones for facile synthesis of quaternary alkyl difluorides, which exhibited high efficiency, broad scope and mild conditions. The synthetic utility of this method is demonstrated by late-stage difluoroalkylation of donepezil, a well-known acetylcholinesterase inhibitor used to treat the Alzheimer's disease. Preliminary mechanistic investigations indicate that a difluoroalkyl radical is involved in a Co(I)/Co(III) catalytic cycle. This cobalt-catalyzed fluoroalkylation thus offers insights into an efficient way for the synthesis of fluoroalkylated bioactive molecules for drug discovery.
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42
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Butler IR, Coles SJ, Horton PN. On the self assembly of a trans-dibromo-bis-(dppfo) iron (III), a ferrocene-ligand complex, dppfo2 = [(ƞ5-C5H4P(O)Ph2)2Fe]: Letting nature do the work. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Zhu SQ, Liu YL, Li H, Xu XH, Qing FL. Direct and Regioselective C–H Oxidative Difluoromethylation of Heteroarenes. J Am Chem Soc 2018; 140:11613-11617. [DOI: 10.1021/jacs.8b08135] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sheng-Qing Zhu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 LinglingLu, Shanghai 200032, China
| | - Yin-Li Liu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 LinglingLu, Shanghai 200032, China
| | - Huan Li
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North RenminLu, Shanghai 201620, China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 LinglingLu, Shanghai 200032, China
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 LinglingLu, Shanghai 200032, China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North RenminLu, Shanghai 201620, China
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44
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Motohashi H, Mikami K. Nickel-Catalyzed Aromatic Cross-Coupling Difluoromethylation of Grignard Reagents with Difluoroiodomethane. Org Lett 2018; 20:5340-5343. [DOI: 10.1021/acs.orglett.8b02264] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hirotaka Motohashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Koichi Mikami
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
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45
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Meanwell M, Adluri BS, Yuan Z, Newton J, Prevost P, Nodwell MB, Friesen CM, Schaffer P, Martin RE, Britton R. Direct heterobenzylic fluorination, difluorination and trifluoromethylthiolation with dibenzenesulfonamide derivatives. Chem Sci 2018; 9:5608-5613. [PMID: 30061993 PMCID: PMC6050628 DOI: 10.1039/c8sc01221k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/25/2018] [Indexed: 12/14/2022] Open
Abstract
Functionalization of heterocyclic scaffolds with mono- or difluoroalkyl groups provides unique opportunities to modulate drug pKa, influence potency and membrane permeability, and attenuate metabolism. While advances in the addition of fluoroalkyl radicals to heterocycles have been made, direct C(sp3)-H heterobenzylic fluorination is comparatively unexplored. Here we demonstrate both mono- and difluorination of a range of alkyl heterocycles using a convenient process that relies on transient sulfonylation by the electrophilic fluorinating agent N-fluorobenzenesulfonimide. We also report heterobenzylic trifluoromethylthiolation and 18F-fluorination, providing a suite of reactions for late-stage C(sp3)-H functionalization of drug leads and radiotracer discovery.
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Affiliation(s)
- Michael Meanwell
- Department of Chemistry , Simon Fraser University , Burnaby , British Columbia V5A 1S6 , Canada .
| | - Bharani Shashank Adluri
- Department of Chemistry , Simon Fraser University , Burnaby , British Columbia V5A 1S6 , Canada .
| | - Zheliang Yuan
- Department of Chemistry , Simon Fraser University , Burnaby , British Columbia V5A 1S6 , Canada .
- Life Science Division , TRIUMF , Vancouver , BC V6T 2A3 , Canada
| | - Josiah Newton
- Department of Chemistry , Simon Fraser University , Burnaby , British Columbia V5A 1S6 , Canada .
- Department of Chemistry , Trinity Western University , Langley , British Columbia V2Y 1Y1 , Canada
| | - Philippe Prevost
- Department of Chemistry , Simon Fraser University , Burnaby , British Columbia V5A 1S6 , Canada .
| | - Matthew B Nodwell
- Department of Chemistry , Simon Fraser University , Burnaby , British Columbia V5A 1S6 , Canada .
| | - Chadron M Friesen
- Department of Chemistry , Trinity Western University , Langley , British Columbia V2Y 1Y1 , Canada
| | - Paul Schaffer
- Life Science Division , TRIUMF , Vancouver , BC V6T 2A3 , Canada
| | - Rainer E Martin
- Medicinal Chemistry , Roche Pharma Research and Early Development (pRED) , Roche Innovation Center Basel , F. Hoffmann-La Roche Ltd , Grenzacherstrasse 124 , CH-4070 Basel , Switzerland
| | - Robert Britton
- Department of Chemistry , Simon Fraser University , Burnaby , British Columbia V5A 1S6 , Canada .
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46
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Baran T, Yılmaz Baran N, Menteş A. Preparation, structural characterization, and catalytic performance of Pd(II) and Pt(II) complexes derived from cellulose Schiff base. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.074] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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47
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Merchant RR, Edwards JT, Qin T, Kruszyk MM, Bi C, Che G, Bao DH, Qiao W, Sun L, Collins MR, Fadeyi OO, Gallego GM, Mousseau JJ, Nuhant P, Baran PS. Modular radical cross-coupling with sulfones enables access to sp 3-rich (fluoro)alkylated scaffolds. Science 2018; 360:75-80. [PMID: 29456201 DOI: 10.1126/science.aar7335] [Citation(s) in RCA: 149] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 02/08/2018] [Indexed: 12/20/2022]
Abstract
Cross-coupling chemistry is widely applied to carbon-carbon bond formation in the synthesis of medicines, agrochemicals, and other functional materials. Recently, single-electron-induced variants of this reaction class have proven particularly useful in the formation of C(sp2)-C(sp3) linkages, although certain compound classes have remained a challenge. Here, we report the use of sulfones to activate the alkyl coupling partner in nickel-catalyzed radical cross-coupling with aryl zinc reagents. This method's tolerance of fluoroalkyl substituents proved particularly advantageous for the streamlined preparation of pharmaceutically oriented fluorinated scaffolds that previously required multiple steps, toxic reagents, and nonmodular retrosynthetic blueprints. Five specific sulfone reagents facilitate the rapid assembly of a vast set of compounds, many of which contain challenging fluorination patterns.
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Affiliation(s)
- Rohan R Merchant
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Jacob T Edwards
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Tian Qin
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Monika M Kruszyk
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Cheng Bi
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Guanda Che
- Asymchem Life Science (Tianjin), Tianjin Economic-Technological Development Zone, Tianjin 300457, China
| | - Deng-Hui Bao
- Asymchem Life Science (Tianjin), Tianjin Economic-Technological Development Zone, Tianjin 300457, China
| | - Wenhua Qiao
- Asymchem Life Science (Tianjin), Tianjin Economic-Technological Development Zone, Tianjin 300457, China
| | - Lijie Sun
- Asymchem Life Science (Tianjin), Tianjin Economic-Technological Development Zone, Tianjin 300457, China
| | - Michael R Collins
- Department of Chemistry, La Jolla Laboratories, Pfizer, 10770 Science Center Drive, San Diego, CA 92121, USA
| | | | - Gary M Gallego
- Department of Chemistry, La Jolla Laboratories, Pfizer, 10770 Science Center Drive, San Diego, CA 92121, USA
| | - James J Mousseau
- Pfizer Medicinal Sciences, Eastern Point Road, Groton, CT 06340, USA
| | - Philippe Nuhant
- Pfizer Medicinal Sciences, Eastern Point Road, Groton, CT 06340, USA
| | - Phil S Baran
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
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48
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Lu C, Lu H, Wu J, Shen HC, Hu T, Gu Y, Shen Q. Palladium-Catalyzed Difluoromethylation of Aryl Chlorides and Triflates and Its Applications in the Preparation of Difluoromethylated Derivatives of Drug/Agrochemical Molecules. J Org Chem 2018; 83:1077-1083. [DOI: 10.1021/acs.joc.7b02989] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Changhui Lu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Sciences, 345 Lingling
Road, Shanghai 200032, China
| | - Hao Lu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Sciences, 345 Lingling
Road, Shanghai 200032, China
| | - Jiang Wu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Sciences, 345 Lingling
Road, Shanghai 200032, China
| | - Hong C. Shen
- Roche Innovation Center Shanghai, Roche R&D Center (China) Ltd., 720 Cai Lun Road, Building 5, Pudong, Shanghai, 201203, China
| | - Taishan Hu
- Roche Innovation Center Shanghai, Roche R&D Center (China) Ltd., 720 Cai Lun Road, Building 5, Pudong, Shanghai, 201203, China
| | - Yucheng Gu
- Syngenta, Jealott’s Hill International Research Centre Bracknell, Berkshire RG42 6EY, U.K
| | - Qilong Shen
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Sciences, 345 Lingling
Road, Shanghai 200032, China
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49
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Miao W, Zhao Y, Ni C, Gao B, Zhang W, Hu J. Iron-Catalyzed Difluoromethylation of Arylzincs with Difluoromethyl 2-Pyridyl Sulfone. J Am Chem Soc 2018; 140:880-883. [PMID: 29278333 DOI: 10.1021/jacs.7b11976] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report the first iron-catalyzed difluoromethylation of arylzincs with difluoromethyl 2-pyridyl sulfone via selective C-S bond cleavage. This method employs the readily available, bench-stable fluoroalkyl sulfone reagent and inexpensive iron catalyst, allowing facile access to structurally diverse difluoromethylated arenes at low temperatures. The experiment employing a radical clock indicates the involvement of radical species in this iron-catalyzed difluoromethylation process.
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Affiliation(s)
- Wenjun Miao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai 200032, China
| | - Yanchuan Zhao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai 200032, China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai 200032, China
| | - Bing Gao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai 200032, China
| | - Wei Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai 200032, China
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50
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Fu XP, Xiao YL, Zhang X. Nickel-Catalyzed Difluoromethylation of Arylboronic Acids with Bromodifluoromethane. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201700624] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xia-Ping Fu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road; Shanghai 200032 China
| | - Yu-Lan Xiao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road; Shanghai 200032 China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road; Shanghai 200032 China
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