1
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Yang L, Tao Z, Xu HD, Shen MH, Chu H. Synthesis of gem-Difluorinated Oxa/Azaspiro[2.4]heptanes via Palladium-Catalyzed Spirocyclopropanation. Org Lett 2024; 26:5782-5787. [PMID: 38940384 DOI: 10.1021/acs.orglett.4c01912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
A palladium-catalyzed spirocyclopropanation of gem-difluoroalkenes with π-allylpalladium 1,4-dipoles has been successfully developed, which gives a powerful and straightforward synthetic strategy for the construction of novel gem-difluorinated spirocyclic compounds, 6,6-difluoro-5-oxa/azaspiro[2.4]heptanes. The scope of gem-difluoroalkenes can be extended to styrenes, acrylic esters, and acrylamides to realize the installment of various functional groups and different heteroatoms on the spirocyclic skeletons, which could be converted to valuable compounds with potential biological activity. The mechanistic investigations revealed the competition between spirocyclopropanation and β-F elimination of π-allylpalladium zwitterionic intermediates.
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Affiliation(s)
- Linhui Yang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Zhu Tao
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Hua-Dong Xu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Mei-Hua Shen
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Haoke Chu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
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2
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Yu X, Maity A, Studer A. Cooperative Photoredox and N-Heterocyclic Carbene Catalyzed Fluoroaroylation for the Synthesis of α-Trifluoromethyl-Substituted Ketones. Angew Chem Int Ed Engl 2023; 62:e202310288. [PMID: 37812525 DOI: 10.1002/anie.202310288] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/08/2023] [Accepted: 10/09/2023] [Indexed: 10/11/2023]
Abstract
α-Trifluoromethylated ketones have attracted significant attention as valuable building blocks in organic synthesis. Such compounds are generally accessed through trifluoromethylation of ketones. Here we report an alternative disconnection approach for the construction of α-CF3 carbonyl compounds by using aroyl fluorides as bifunctional reagents for fluoroaroylation of gem-difluoroalkenes through cooperative photoredox and N-heterocyclic carbene (NHC) catalysis. This strategy bypasses the use of expensive or sensitive trifluoromethylation reagents and/or the requirement for ketone pre-functionalization, thus enabling an efficient and general synthetic method to access α-CF3 -substituted ketones. A wide variety of gem-difluoroalkenes and aroyl fluorides bearing a diverse set of functional groups are eligible substrates. Notably, the developed methodology also provides rapid access to mono- or difluoroalkyl ketones. Mechanistic studies reveal that merging photoredox catalysis with NHC catalysis is essential for the reaction.
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Affiliation(s)
- Xiaoye Yu
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Anirban Maity
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
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3
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Chen L, Luo ZF, Ye P, Mao YJ, Xu ZY, Xu DQ, Lou SJ. Z-Selective access to α-trifluoromethyl arylenes through Pd-catalysed fluoroarylation of 1,1-difluoroallenes. Org Biomol Chem 2023; 21:8979-8983. [PMID: 37934046 DOI: 10.1039/d3ob01574b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The synthesis of stereo-defined α-trifluoromethyl arylenes is of great importance in medical chemistry, organic chemistry, and materials science. However, despite the recent advances, the Z-selective formation of α-trifluoromethyl arylenes has remained underdeveloped. Here, we describe a facile approach towards Z-α-trifluoromethyl arylenes through Pd-catalysed stereoselective fluoroarylation of 1,1-difluoroallenes in the presence of a bulky monophosphine ligand.
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Affiliation(s)
- Lei Chen
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Ze-Feng Luo
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Peng Ye
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Yang-Jie Mao
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Zhen-Yuan Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Shao-Jie Lou
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
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4
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Li X, Song H, Yu S, Mi R, Li XX. Rhodium-Catalyzed Enantioselective 1,4-Oxyamination of Conjugated gem-Difluorodienes via Coupling with Carboxylic Acids and Dioxazolones. Angew Chem Int Ed Engl 2023; 62:e202305669. [PMID: 37357836 DOI: 10.1002/anie.202305669] [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: 04/25/2023] [Revised: 06/21/2023] [Accepted: 06/26/2023] [Indexed: 06/27/2023]
Abstract
The incorporation of fluorine atoms in organics improves their bioactivity and lipophilicity. Catalytic functionalization of gem-difluorodienes represents one of the most straightforward approaches to access fluorinated alkenes. In contrast to the regular 1,3-dienes that undergo diverse asymmetric di/hydrofunctionalizations, the regio- and enantioselective oxyamination of gem-difluorodienes remains untouched. Herein, we report asymmetric 1,4-oxyamination of gem-difluorodiene by chiral rhodium-catalyzed three-component coupling with readily available carboxylic acid and dioxazolone, affording gem-difluorinated 1,4-amino alcohol derivatives. Our asymmetric protocol exhibits high 1,4-regio- and enantioselectivity with utility in the late-stage modification of pharmaceuticals and natural products. Stoichiometric experiments provide evidences for the π-allylrhodium pathway. Related oxyamination was also realized when trifluoroethanol was used as an oxygen nucleophile.
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Affiliation(s)
- Xingwei Li
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Heng Song
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China
| | - Songjie Yu
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China
| | - Ruijie Mi
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China
| | - Xiao-Xi Li
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China
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5
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Bai D, Guo Y, Ma D, Guo X, Wu H. Copper-Catalyzed Hydroamination of gem-Difluoroalkenes Access to Diversified α-Difluoromethyl Amines. Org Lett 2023; 25:533-537. [PMID: 36637250 DOI: 10.1021/acs.orglett.2c04278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The difluoromethyl group (CF2H) is of great importance in medicinal chemistry. We report herein an efficient method for the synthesis of diversified α-difluoromethyl amines through copper-catalyzed hydroamination of gem-difluoroalkenes, where the C-N bond formed via a α-CF2H transition-metal intermediate. This new reaction proceeds through Cu-H insertion to gem-difluoroalkenes and gives valuable alkyl-CF2H-containing compounds, which overcome the much more challenged β-F elimination from α-fluoroalkyl organocopper species. The reaction exhibits broad substrate scope with readily available starting materials and commercial catalysis.
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Affiliation(s)
- Dachang Bai
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Pingyuan Laboratory, Henan Normal University, Xinxiang 453007, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P R China
| | - Yuanyuan Guo
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Pingyuan Laboratory, Henan Normal University, Xinxiang 453007, China
| | - Dandan Ma
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Pingyuan Laboratory, Henan Normal University, Xinxiang 453007, China
| | - Xiuli Guo
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Pingyuan Laboratory, Henan Normal University, Xinxiang 453007, China
| | - Hao Wu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Pingyuan Laboratory, Henan Normal University, Xinxiang 453007, China
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6
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Sun G, Liu H, Wang X, Zhang W, Miao W, Luo Q, Gao B, Hu J. Palladium-Catalyzed Defluorinative Coupling of Difluoroalkenes and Aryl Boronic Acids for Ketone Synthesis. Angew Chem Int Ed Engl 2023; 62:e202213646. [PMID: 36315428 DOI: 10.1002/anie.202213646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Indexed: 11/06/2022]
Abstract
The transition-metal-catalyzed carbonylation reaction is a useful approach for ketone synthesis. However, it is often problematic to use exogenous carbonyl reagents, such as gaseous carbon monoxide. In this manuscript, we report a novel palladium-catalyzed coupling reaction of gem-difluoroalkenes and aryl boronic acids that yields bioactive indane-type ketones with an all-carbon α-quaternary center. Characterization and stoichiometric reactions of the key intermediates RCF2 PdII support a water-induced defluorination and cross-coupling cascade mechanism. The vinyl difluoromethylene motif serves as an in situ carbonyl precursor which is unprecedented in transition-metal-catalyzed coupling reactions. It is expected to raise broad research interest from the perspectives of ketone synthesis, fluoroalkene functionalization, and rational design of new synthetic protocols based on the unique reactivity of difluoroalkyl palladium(II) species.
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Affiliation(s)
- Guangwu Sun
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Chemical Biology and Nanomedicine, Hunan University, Changsha, Hunan 410082, China
| | - Herui Liu
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Chemical Biology and Nanomedicine, Hunan University, Changsha, Hunan 410082, China
| | - Xiu Wang
- 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
| | - Wenbo Zhang
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Chemical Biology and Nanomedicine, Hunan University, Changsha, Hunan 410082, China
| | - 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
| | - Qinyu Luo
- 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
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Chemical Biology and Nanomedicine, Hunan University, Changsha, Hunan 410082, 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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7
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Koley S, Cayton KT, González-Montiel GA, Yadav MR, Orsi DL, Intelli AJ, Cheong PHY, Altman RA. Cu(II)-Catalyzed Unsymmetrical Dioxidation of gem-Difluoroalkenes to Generate α,α-Difluorinated-α-phenoxyketones. J Org Chem 2022; 87:10710-10725. [PMID: 35914193 PMCID: PMC9391295 DOI: 10.1021/acs.joc.2c00925] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A Cu-based catalyst system convergently couples gem-difluoroalkenes with phenols under aerobic conditions to deliver α,α-difluorinated-α-phenoxyketones, an unstudied hybrid fluorinated functional group. Composed of α,α-difluorinated ketone and α,α-difluorinated ether moieties, these compounds have rarely been reported as a synthetic intermediate. Computational predictions and later experimental corroboration suggest that the phenoxy-substituted fluorinated ketone's sp3-hybridized hydrate form is energetically favored relative to the respective nonether variant and that perturbation of the electronic character of the ketone can further encourage the formation of the hydrate. The more facile conversion between ketone and hydrate forms suggests that analogues should readily covalently inhibit proteases and other enzymes. Further functionalization of the ketone group enables access to other useful fluorinated functional groups.
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Affiliation(s)
- Suvajit Koley
- Department of Medicinal Chemistry and Molecular Pharmacology; Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Kaylee T. Cayton
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331, USA
| | | | - M. Ramu Yadav
- Department of Chemistry, MS-723, IIT Delhi, Hauz Khas, New Delhi, India 110016
| | - Douglas L. Orsi
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA
| | - Andrew J. Intelli
- Department of Medicinal Chemistry and Molecular Pharmacology; Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, 153 Gilbert Hall, Corvallis, Oregon 97331, USA
| | - Ryan A. Altman
- Department of Medicinal Chemistry and Molecular Pharmacology; Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, USA
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8
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Zhu C, Zhang H, Liu Q, Chen K, Liu ZY, Feng C. Nickel-Catalyzed anti-Markovnikov Hydroalkylation of Trifluoromethylalkenes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Chuan Zhu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Heng Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Qian Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Kai Chen
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Ze-Yao Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
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9
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Sorrentino JP, Altman RA. Fluorine-Retentive Strategies for the Functionalization of gem-Difluoroalkenes. SYNTHESIS-STUTTGART 2021; 53:3935-3950. [PMID: 34707322 DOI: 10.1055/a-1547-9270] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
gem-Difluoroalkenes are readily available fluorinated building blocks, and the fluorine-induced electronic perturbations of the alkenes enables a wide array of selective functionalization reactions. However, many reactions of gem-difluoroalkenes result in a net C─F functionalization to generate monofluorovinyl products or addition of F to generate trifluoromethyl-containing products. In contrast, fluorine-retentive strategies for the functionalization of gem-difluoroalkenes remain less generally developed, and is now becoming a rapidly developing area. This review will present the development of fluorine-retentive strategies including electrophilic, nucleophilic, radical, and transition metal catalytic strategies with an emphasis on key physical organic and mechanistic aspects that enable reactivities.
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Affiliation(s)
- Jacob P Sorrentino
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ryan A Altman
- Department of Medicinal Chemistry and Molecular Pharmacology and Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
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10
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Liu J, Yu L, Zheng C, Zhao G. Asymmetric Synthesis of 2,2-Difluorotetrahydrofurans through Palladium-Catalyzed Formal [3+2] Cycloaddition. Angew Chem Int Ed Engl 2021; 60:23641-23645. [PMID: 34494347 DOI: 10.1002/anie.202111376] [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: 08/22/2021] [Indexed: 12/21/2022]
Abstract
The asymmetric synthesis of 2,2-difluorinated tetrahydrofurans was accomplished via enantioselective formal [3+2] cycloaddition catalyzed by palladium. The asymmetric reaction between gem-difluoroalkenes and racemic vinyl epoxides or vinylethylene carbonates resulted in the formation of enantioenriched 2,2-difluorotetrahydrofurans with an enantioselectivity up to 98 %. Notably, the reaction used the readily available (R)-BINAP as the ligand at a low loading and yielded a wide variety of difluorinated products in moderate to high yields. Both chiral diastereomers could be obtained in a single sequence.
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Affiliation(s)
- Jun Liu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
| | - Longhui Yu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
| | - Changwu Zheng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai, 201203, P.R. China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
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11
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Liu J, Yu L, Zheng C, Zhao G. Asymmetric Synthesis of 2,2‐Difluorotetrahydrofurans through Palladium‐Catalyzed Formal [3+2] Cycloaddition. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Liu
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P.R. China
| | - Longhui Yu
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P.R. China
| | - Changwu Zheng
- School of Pharmacy Shanghai University of Traditional Chinese Medicine 1200 Cailun Road Shanghai 201203 P.R. China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 P.R. China
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12
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Li W, Liu R, Li R, Wang S, Li D, Yang J. Catalyst‐Free and Oxidant‐Free Cascade Difluoroalkylation and Controllable C−F Bond Activation of Aryl Enol Acetates for the Synthesis of β‐Fluoroenones and β‐Enaminones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100681] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wenshuang Li
- School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
| | - Ruyan Liu
- School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
| | - Ruonan Li
- School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
| | - Shihaozhi Wang
- School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
| | - Dianjun Li
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
- School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
| | - Jinhui Yang
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
- School of Chemistry and Chemical Engineering Ningxia University 489 Helanshan West Road Yinchuan 750021 People's Republic of China
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13
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Zubkov MO, Kosobokov MD, Dilman AD. Radical Functionalization of Geminal Difluoroalkenes. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021070010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Liu C, Zhu C, Cai Y, Jiang H. Solvent-Switched Oxidation Selectivities with O 2 : Controlled Synthesis of α-Difluoro(thio)methylated Alcohols and Ketones. Angew Chem Int Ed Engl 2021; 60:12038-12045. [PMID: 33704886 DOI: 10.1002/anie.202017271] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Indexed: 12/12/2022]
Abstract
The solvent-switched hydroxylation and oxygenation of α-difluoro(thio)methylated carbanions with molecular oxygen under mild conditions are reported. This strategy tames the redox reactions of the in situ generated hydroperoxy difluoromethylsulfides, in which solvent-bonding can alter their reactivity and switch the oxidation selectivities. These controllable three-component reactions of gem-difluoroalkenes, thiols and molecular oxygen afford various useful α-difluoro(thio)methylated alcohols and ketones in high yields. Significantly, this protocol has been applied in the synthesis different bioactive molecules. Mechanism studies enable the detection of the hydroperoxy difluoromethylsulfide intermediates and exclude the thiol-based radical pathway.
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Affiliation(s)
- Chi Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Yingying Cai
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
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15
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Liu C, Zhu C, Cai Y, Jiang H. Solvent‐Switched Oxidation Selectivities with O
2
: Controlled Synthesis of α‐Difluoro(thio)methylated Alcohols and Ketones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chi Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Yingying Cai
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
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16
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Sorrentino JP, Orsi DL, Altman RA. Acid-Catalyzed Hydrothiolation of gem-Difluorostyrenes to Access α,α-Difluoroalkylthioethers. J Org Chem 2021; 86:2297-2311. [PMID: 33471529 PMCID: PMC7869866 DOI: 10.1021/acs.joc.0c02440] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The substitution of hydrogen atoms with fluorine in bioactive molecules can greatly impact physicochemical, pharmacokinetic, and pharmacodynamic properties. However, current synthetic methods cannot readily access many fluorinated motifs, which impedes utilization of these groups. Thus, the development of new methods to introduce fluorinated functional groups is critical for developing the next generation of biological probes and therapeutic agents. The synthesis of one such substructure, the α,α-difluoroalkylthioether, typically requires specialized conditions that necessitate early-stage installation. A late-stage and convergent approach to access α,α-difluoroalkylthioethers could involve nucleophilic addition of thiols across gem-difluorostyrenes. Unfortunately, under basic conditions, nucleophilic addition to gem-difluorostyrenes generates an anionic intermediate that can undergo facile elimination of fluoride to generate α-fluorovinylthioethers. To overcome this decomposition, we herein exploit an acid-based catalyst system to facilitate simultaneous nucleophilic addition and protonation of the unstable intermediate. Ultimately, the optimized mild conditions afford the desired α,α-difluoroalkylthioethers in high selectivity and moderate to excellent yields. These α,α-difluoroalkylthioethers are less nucleophilic and more oxidatively stable relative to nonfluorinated thioethers, suggesting the potential application of this unexplored functional group in biological probes and therapeutic agents.
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Affiliation(s)
- Jacob P. Sorrentino
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Douglas L. Orsi
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, United States
| | - Ryan A. Altman
- Department of Medicinal Chemistry and Molecular Pharmacology and Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, United States
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17
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Liu H, Li Y, Wang DX, Sun MM, Feng C. Visible-Light-Promoted Regioselective 1,3-Fluoroallylation of gem-Difluorocyclopropanes. Org Lett 2020; 22:8681-8686. [PMID: 33112624 DOI: 10.1021/acs.orglett.0c03268] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A strategically novel protocol for ring-opening functionalization of aryl gem-difluorocyclopropanes (F2CPs), which allows an expedient construction of CF3-containing architectures via visible-light-promoted F-nucleophilic attack manifold, was disclosed. Single electron oxidation of F2CPs was ascribed as the critical step for the success of this transformation by prompting F-nucleophilic attack, as well as the ensuing C-C bond scission. The observed intriguing regioselectivity for fluoroincorporation in this reaction was rationalized by invoking the cation-stabilization property of gem-difluorine substituents and also the thermodynamic gains acquired from forming CF3 functionality. By using cost-effective fluorination reagent and readily available substrates, a broad collection of structurally diversified α-allyl-β-trifluoromethyl ethylbenzene derivatives could be obtained in generally good yields. Further mechanistic investigations proved the engagement of a benzylic radical intermediate in this transformation.
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Affiliation(s)
- Haidong Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Yi Li
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Ding-Xing Wang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Meng-Meng Sun
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
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18
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Lin T, Pan Z, Tu Y, Zhu S, Wu H, Liu Y, Li Z, Zhang J. Design and Synthesis of TY‐Phos and Application in Palladium‐Catalyzed Enantioselective Fluoroarylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008262] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tao‐Yan Lin
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Zhangjin Pan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Youshao Tu
- College of Chemistry and Life Science Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 China
| | - Shuai Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Hai‐Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 China
| | - Yu Liu
- College of Chemistry and Life Science Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 China
| | - Zhiming Li
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
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19
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Lin TY, Pan Z, Tu Y, Zhu S, Wu HH, Liu Y, Li Z, Zhang J. Design and Synthesis of TY-Phos and Application in Palladium-Catalyzed Enantioselective Fluoroarylation of gem-Difluoroalkenes. Angew Chem Int Ed Engl 2020; 59:22957-22962. [PMID: 32893388 DOI: 10.1002/anie.202008262] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/07/2020] [Indexed: 01/10/2023]
Abstract
The first example of highly enantioselective fluoroarylation of gem-difluoroalkenes with aryl halides is presented by using a new chiral sulfinamide phosphine (Sadphos) type ligand TY-Phos. N-Me-TY-Phos can be easily synthesized on a gram scale from readily available starting materials in three steps. Salient features of this work including readily available starting materials, good yields, high enantioselectivities as well as broad substrate scope make this approach very practical and attractive. Notably, the asymmetric synthesis of an analogue of a biologically active molecule is also reported.
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Affiliation(s)
- Tao-Yan Lin
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China.,Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Zhangjin Pan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Youshao Tu
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, China
| | - Shuai Zhu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Hai-Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Yu Liu
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, China
| | - Zhiming Li
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
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20
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Orsi DL, Douglas JT, Sorrentino JP, Altman RA. Cobalt-Catalyzed Selective Unsymmetrical Dioxidation of gem-Difluoroalkenes. J Org Chem 2020; 85:10451-10465. [PMID: 32697905 DOI: 10.1021/acs.joc.0c00415] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
gem-Difluoroalkenes represent valuable synthetic handles for organofluorine chemistry; however, most reactions of this substructure proceed through reactive intermediates prone to eliminate a fluorine atom and generate monofluorinated products. Taking advantage of the distinct reactivity of gem-difluoroalkenes, we present a cobalt-catalyzed regioselective unsymmetrical dioxygenation of gem-difluoroalkenes using phenols and molecular oxygen, which retains both fluorine atoms and provides β-phenoxy-β,β-difluorobenzyl alcohols. Mechanistic studies suggest that the reaction operates through a radical chain process initiated by Co(II)/O2/phenol and quenched by the Co-based catalyst. This mechanism enables the retention of both fluorine atoms, which contrasts most transition-metal-catalyzed reactions of gem-difluoroalkenes that typically involve defluorination.
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Affiliation(s)
- Douglas L Orsi
- Vanderbilt Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Justin T Douglas
- Molecular Structures Group, Nuclear Magnetic Resonance Laboratory, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Jacob P Sorrentino
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ryan A Altman
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States.,Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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21
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Liu C, Zhu C, Cai Y, Yang Z, Zeng H, Chen F, Jiang H. Fluorohalogenation of
gem
‐Difluoroalkenes: Synthesis and Applications of α‐Trifluoromethyl Halides. Chemistry 2020; 26:1953-1957. [DOI: 10.1002/chem.201905445] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Chi Liu
- Key Laboratory of Functional Molecular Engineering of, Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Chuanle Zhu
- Key Laboratory of Functional Molecular Engineering of, Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Yingying Cai
- Key Laboratory of Functional Molecular Engineering of, Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Zhiyi Yang
- Key Laboratory of Functional Molecular Engineering of, Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Hao Zeng
- Key Laboratory of Functional Molecular Engineering of, Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Fulin Chen
- Key Laboratory of Functional Molecular Engineering of, Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of, Guangdong Province School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 P. R. China
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22
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Black RE, Kilyanek SM, Reinhart ED, Jordan RF. Olefin Insertion Reactivity of a (Phosphine-arenesulfonate)Palladium(II) Fluoride Complex. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Rebecca E. Black
- Department of Chemistry, New College of Florida, 5800 Bay Shore Road, Sarasota, Florida 34243, United States
| | - Stefan M. Kilyanek
- Department of Chemistry & Biochemistry, University of Arkansas, 119 Chemistry Building, Fayetteville, Arkansas 72701, United States
| | - Erik D. Reinhart
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
| | - Richard F. Jordan
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
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23
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Li J, Rao W, Wang SY, Ji SJ. Nickel-Catalyzed Defluorinative Reductive Cross-Coupling Reaction of gem-Difluoroalkenes with Thiosulfonate or Selenium Sulfonate. J Org Chem 2019; 84:11542-11552. [PMID: 31424934 DOI: 10.1021/acs.joc.9b01387] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A nickel-catalyzed defluorinative reductive cross-coupling of gem-difluoroalkenes with thiosulfonate or selenosulfonates is described. The reaction involves the formation of thiolated or selenylated monofluoroolefins via regioselective C-F bond cleavage and C-S or C-Se bond formation and features easily available substrates, mild reaction conditions, and high E-selectivity. One of the derivatives by further cross coupling with PhMgBr exhibited an aggregation-induced emission enhancement effect.
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Affiliation(s)
- Jian Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , Suzhou 215123 , China
| | - Weidong Rao
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , China
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , Suzhou 215123 , China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, and Collaborative Innovation Center of Suzhou Nano Science and Technology , Soochow University , Suzhou 215123 , China
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24
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Orsi DL, Yadav MR, Altman RA. Organocatalytic Strategy for Hydrophenolation of Gem-Difluoroalkenes. Tetrahedron 2019; 75:4325-4336. [PMID: 32103843 DOI: 10.1016/j.tet.2019.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Gem-difluoroalkenes are an easily accessed fluorinated functional group, and a useful intermediate for elaborating into more complex fluorinated compounds. Currently, most functionalization reactions of gem-difluoroalkenes, with or without a transition metal-based catalyst system, involve the addition or removal of a fluorine atom to generate trifluorinated or monofluorinated products, respectively. In contrast, we present a complementary "fluorine-retentive" reaction that exploits an organocatalytic strategy to add phenols across gem-difluoroalkenes to deliver β,β-difluorophenethyl arylethers. The products are produced in good to moderate yields and selectivities, thus providing a range of compounds that are underrepresented in the synthetic and medicinal chemistry literature.
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Affiliation(s)
- Douglas L Orsi
- The University of Kansas, Department of Medicinal Chemistry, Lawrence, KS 66045
| | - M Ramu Yadav
- The University of Kansas, Department of Medicinal Chemistry, Lawrence, KS 66045
| | - Ryan A Altman
- The University of Kansas, Department of Medicinal Chemistry, Lawrence, KS 66045
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25
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Malcolmson SJ, Li K, Shao X. 2-Azadienes as Enamine Umpolung Synthons for the Preparation of Chiral Amines. Synlett 2019; 30:1253-1268. [PMID: 33731976 PMCID: PMC7963344 DOI: 10.1055/s-0037-1611770] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The development of new strategies for the preparation of chiral amines is an important objective in organic synthesis. In this Synpacts, we summarize our approach for catalytically accessing nucleophilic aminoalkyl metal species from 2-azadienes, and its application in generating a number of important but elusive chiral amine scaffolds. Reductive couplings with ketones and imines afford 1,2-amino tertiary alcohols and 1,2-diamines, respectively, whereas fluoroarylations of gem-difluoro-2-azadienes deliver α-trifluoromethylated benzylic amines.
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Affiliation(s)
| | - Kangnan Li
- Department of Chemistry, Duke University, NC 27708, USA
| | - Xinxin Shao
- Department of Chemistry, Duke University, NC 27708, USA
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26
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Yoo W, Kondo J, Rodríguez‐Santamaría JA, Nguyen TVQ, Kobayashi S. Efficient Synthesis of α‐Trifluoromethyl Carboxylic Acids and Esters through Fluorocarboxylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2019; 58:6772-6775. [DOI: 10.1002/anie.201902779] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Woo‐Jin Yoo
- Green & Sustainable Chemistry Cooperation LaboratoryGraduate School of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Junpei Kondo
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | | | - Thanh V. Q. Nguyen
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Shū Kobayashi
- Green & Sustainable Chemistry Cooperation LaboratoryGraduate School of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo Bunkyo-ku Tokyo 113-0033 Japan
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27
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Yoo W, Kondo J, Rodríguez‐Santamaría JA, Nguyen TVQ, Kobayashi S. Efficient Synthesis of α‐Trifluoromethyl Carboxylic Acids and Esters through Fluorocarboxylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902779] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Woo‐Jin Yoo
- Green & Sustainable Chemistry Cooperation LaboratoryGraduate School of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Junpei Kondo
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | | | - Thanh V. Q. Nguyen
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Shū Kobayashi
- Green & Sustainable Chemistry Cooperation LaboratoryGraduate School of ScienceThe University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Department of ChemistrySchool of ScienceThe University of Tokyo Hongo Bunkyo-ku Tokyo 113-0033 Japan
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28
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Liu H, Ge L, Wang D, Chen N, Feng C. Photoredox‐Coupled F‐Nucleophilic Addition: Allylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2019; 58:3918-3922. [DOI: 10.1002/anie.201814308] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/18/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Haidong Liu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Liang Ge
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Ding‐Xing Wang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Nan Chen
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
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29
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Liu H, Ge L, Wang D, Chen N, Feng C. Photoredox‐Coupled F‐Nucleophilic Addition: Allylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814308] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Haidong Liu
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Liang Ge
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Ding‐Xing Wang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Nan Chen
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringNanjing Tech University Nanjing Jiangsu 210009 P. R. China
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30
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Daniel PE, Onyeagusi CI, Ribeiro AA, Li K, Malcolmson SJ. Palladium-Catalyzed Synthesis of α-Trifluoromethyl Benzylic Amines via Fluoroarylation of gem-Difluoro-2-azadienes Enabled by Phosphine-Catalyzed Formation of an Azaallyl-Silver Intermediate. ACS Catal 2019; 9:205-210. [PMID: 31105988 DOI: 10.1021/acscatal.8b03999] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report the synthesis of α-trifluoromethyl benzylic amines through the vicinal fluoroarylation of gem-difluoro-2-azadienes. Our studies indicate that XPhos plays an important role as a phase transfer catalyst that promotes the addition of AgF to the difluoroazadiene, generating an α-trifluoromethyl azaallyl-silver intermediate that we have characterized by NMR spectroscopy. This intermediate likely transmetallates to Pd, coupling several aryl iodides to deliver products in up to 90% yield. Modification of the azadiene's activating group facilitates challenging cross-couplings.
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Affiliation(s)
- Paige E. Daniel
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Chibueze I. Onyeagusi
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Anthony A. Ribeiro
- Duke University NMR Center and Department of Radiology, Duke University, Durham, North Carolina 27710, United States
| | - Kangnan Li
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Steven J. Malcolmson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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31
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Tang HJ, Zhang YF, Jiang YW, Feng C. F– Nucleophilic-Addition-Induced [3 + 2] Annulation: Direct Access to CF3-Substituted Indenes. Org Lett 2018; 20:5190-5193. [DOI: 10.1021/acs.orglett.8b02128] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai-Jun Tang
- Institute of Advanced Synthesis (IAS), College of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People’s Republic of China
| | - Yu-Feng Zhang
- Institute of Advanced Synthesis (IAS), College of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People’s Republic of China
| | - Yi-Wen Jiang
- Institute of Advanced Synthesis (IAS), College of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People’s Republic of China
| | - Chao Feng
- Institute of Advanced Synthesis (IAS), College of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People’s Republic of China
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32
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Li J, Xu C, Wei N, Wang M. Synthesis of 2,2-Difluorinated 4-Isoflavanols/4-Thioisoflavanols via a Base-Catalyzed [4 + 2] Annulation Reaction of gem-Difluoroolefins. J Org Chem 2017; 82:11348-11357. [DOI: 10.1021/acs.joc.7b01635] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiaheng Li
- Jilin
Province Key Laboratory of Organic Functional Molecular Design and
Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Cong Xu
- Jilin
Province Key Laboratory of Organic Functional Molecular Design and
Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Na Wei
- Jilin
Province Key Laboratory of Organic Functional Molecular Design and
Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Mang Wang
- Jilin
Province Key Laboratory of Organic Functional Molecular Design and
Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
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33
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Zhang X, Liu Y, Chen G, Pei G, Bi S. Theoretical Insight into C(sp3)–F Bond Activations and Origins of Chemo- and Regioselectivities of “Tunable” Nickel-Mediated/-Catalyzed Couplings of 2-Trifluoromethyl-1-alkenes with Alkynes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00514] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaomin Zhang
- School of Chemistry and Chemical
Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Yuxia Liu
- School of Chemistry and Chemical
Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Guang Chen
- School of Chemistry and Chemical
Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Guojing Pei
- School of Chemistry and Chemical
Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
| | - Siwei Bi
- School of Chemistry and Chemical
Engineering, Qufu Normal University, Qufu 273165, People’s Republic of China
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34
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Li L, Ni C, Xie Q, Hu M, Wang F, Hu J. TMSCF
3
as a Convenient Source of CF
2
=CF
2
for Pentafluoroethylation, (Aryloxy)tetrafluoroethylation, and Tetrafluoroethylation. Angew Chem Int Ed Engl 2017; 56:9971-9975. [DOI: 10.1002/anie.201705734] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Lingchun Li
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Qiqiang Xie
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Mingyou Hu
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Fei Wang
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Jinbo Hu
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
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35
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Tang H, Lin L, Feng C, Loh T. Palladium‐Catalyzed Fluoroarylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201705321] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hai‐Jun Tang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Ling‐Zhi Lin
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Teck‐Peng Loh
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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36
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Li L, Ni C, Xie Q, Hu M, Wang F, Hu J. TMSCF
3
as a Convenient Source of CF
2
=CF
2
for Pentafluoroethylation, (Aryloxy)tetrafluoroethylation, and Tetrafluoroethylation. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705734] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Lingchun Li
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Qiqiang Xie
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Mingyou Hu
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Fei Wang
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Jinbo Hu
- Key Laboratory of Organofluorine ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
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37
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Tang H, Lin L, Feng C, Loh T. Palladium‐Catalyzed Fluoroarylation of
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705321] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hai‐Jun Tang
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Ling‐Zhi Lin
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Chao Feng
- Institute of Advanced SynthesisSchool of Chemistry and Molecular EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University 30 South Puzhu Road Nanjing 211816 P.R. China
| | - Teck‐Peng Loh
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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38
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Liu Y, Zhou Y, Zhao Y, Qu J. Synthesis of gem-Difluoroallylboronates via FeCl2-Catalyzed Boration/β-Fluorine Elimination of Trifluoromethyl Alkenes. Org Lett 2017; 19:946-949. [DOI: 10.1021/acs.orglett.7b00168] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yang Liu
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yuhan Zhou
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yilong Zhao
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jingping Qu
- State Key Laboratory of Fine
Chemicals, School of Pharmaceutical Science and Technology, Dalian University of Technology, Dalian 116024, China
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39
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Tian P, Wang CQ, Cai SH, Song S, Ye L, Feng C, Loh TP. F– Nucleophilic-Addition-Induced Allylic Alkylation. J Am Chem Soc 2016; 138:15869-15872. [DOI: 10.1021/jacs.6b11205] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Panpan Tian
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Cheng-Qiang Wang
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Sai-Hu Cai
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Shengjin Song
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Lu Ye
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Chao Feng
- Institute
of Advanced Synthesis, School of Chemistry and Molecular Engineering,
Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Teck-Peng Loh
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637616
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40
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Li J, Chen J, Jiao W, Wang G, Li Y, Cheng X, Li G. Difluoroalkylation/C–H Annulation Cascade Reaction Induced by Visible-Light Photoredox Catalysis. J Org Chem 2016; 81:9992-10001. [DOI: 10.1021/acs.joc.6b01825] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jin Li
- Institute
of Chemistry and Biomedical Science, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing, China
| | - Jingzhi Chen
- Institute
of Chemistry and Biomedical Science, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing, China
| | - Wei Jiao
- Institute
of Chemistry and Biomedical Science, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing, China
| | - Guoqiang Wang
- Institute
of Theoretical and Computational Chemistry, School of Chemistry and
Chemical Engineering, Nanjing University, Nanjing, China
| | - Ying Li
- Institute
of Chemistry and Biomedical Science, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing, China
| | - Xu Cheng
- Institute
of Chemistry and Biomedical Science, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing, China
| | - Guigen Li
- Institute
of Chemistry and Biomedical Science, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing, China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
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41
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Shi E, Liu J, Liu C, Shao Y, Wang H, Lv Y, Ji M, Bao X, Wan X. Difunctionalization of Styrenes with Perfluoroalkyl and tert-Butylperoxy Radicals: Room Temperature Synthesis of (1-(tert-Butylperoxy)-2-perfluoroalkyl)-ethylbenzene. J Org Chem 2016; 81:5878-85. [DOI: 10.1021/acs.joc.6b00575] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Erbo Shi
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jiajun Liu
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Chunmei Liu
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Ying Shao
- Key
Laboratory of Advanced Catalytic Materials and Technology, Advanced
Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, P. R. China
| | - Hanghang Wang
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Yuanzheng Lv
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Meishan Ji
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Xiaoguang Bao
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Xiaobing Wan
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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42
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Yi N, Zhang H, Xu C, Deng W, Wang R, Peng D, Zeng Z, Xiang J. Copper/Silver Cocatalyzed Oxidative Coupling of Vinylarenes with ICH2CF3 or ICH2CHF2 Leading to β-CF3/CHF2-Substituted Ketones. Org Lett 2016; 18:1780-3. [DOI: 10.1021/acs.orglett.6b00498] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Niannian Yi
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Hao Zhang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Chonghui Xu
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Wei Deng
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Ruijia Wang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Dongming Peng
- School
of Pharmacy, Hunan University of Chinese Medicine, Changsha, 410208, P. R. China
| | - Zebing Zeng
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Jiannan Xiang
- State
Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry
and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China
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43
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Zheng J, Lin JH, Yu LY, Wei Y, Zheng X, Xiao JC. Cross-Coupling between Difluorocarbene and Carbene-Derived Intermediates Generated from Diazocompounds for the Synthesis of gem-Difluoroolefins. Org Lett 2015; 17:6150-3. [PMID: 26636182 DOI: 10.1021/acs.orglett.5b03159] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian Zheng
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jin-Hong Lin
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Liu-Ying Yu
- Institute
of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation
Center for Molecular Target New Drug Study, University of South China, 28 West Changsheng Road, Hengyang, Hunan 421001, China
| | - Yun Wei
- Institute
of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation
Center for Molecular Target New Drug Study, University of South China, 28 West Changsheng Road, Hengyang, Hunan 421001, China
| | - Xing Zheng
- Institute
of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation
Center for Molecular Target New Drug Study, University of South China, 28 West Changsheng Road, Hengyang, Hunan 421001, China
| | - Ji-Chang Xiao
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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44
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Hu M, Ni C, Li L, Han Y, Hu J. gem-Difluoroolefination of Diazo Compounds with TMSCF3 or TMSCF2Br: Transition-Metal-Free Cross-Coupling of Two Carbene Precursors. J Am Chem Soc 2015; 137:14496-501. [DOI: 10.1021/jacs.5b09888] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mingyou Hu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Chuanfa Ni
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Lingchun Li
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Yongxin Han
- Boston-Kenilworth
LO Chemistry, Merck Research Laboratories, 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
| | - Jinbo Hu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
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45
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Ichitsuka T, Fujita T, Ichikawa J. Nickel-Catalyzed Allylic C(sp3)–F Bond Activation of Trifluoromethyl Groups via β-Fluorine Elimination: Synthesis of Difluoro-1,4-dienes. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01463] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomohiro Ichitsuka
- Division
of Chemistry, Faculty
of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Takeshi Fujita
- 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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46
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Rhodium-catalysed C(sp(2))-C(sp(2)) bond formation via C-H/C-F activation. Nat Commun 2015; 6:7472. [PMID: 26081837 PMCID: PMC4557390 DOI: 10.1038/ncomms8472] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 05/13/2015] [Indexed: 12/23/2022] Open
Abstract
Fluoroalkenes represent a class of privileged structural motifs, which found widespread use in medicinal chemistry. However, the synthetic access to fluoroalkenes was much underdeveloped with previous reported methods suffering from either low step economy or harsh reaction conditions. Here we present a RhIII-catalysed tandem C–H/C–F activation for the synthesis of (hetero)arylated monofluoroalkenes. The use of readily available gem-difluoroalkenes as electrophiles provides a highly efficient and operationally simple method for the introduction of α-fluoroalkenyl motifs onto (hetero)arenes under oxidant-free conditions. Furthermore, the employment of alcoholic solvent and the in-situ generated hydrogen fluoride are found to be beneficial in this transformation, indicating the possibility of the involvement of hydrogen bond activation mode with regards to the C–F bond cleavage step. Fluoroalkenes are found widely in biologically active compounds, but their introduction can be difficult or laborious. Here, the authors report a C–H/C–F activation strategy to introduce monofluoroalkenes into organic molecules in one step with good to excellent yields.
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47
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Li Y, Ye Z, Bellman TM, Chi T, Dai M. Efficient Synthesis of β-CF3/SCF3-Substituted Carbonyls via Copper-Catalyzed Electrophilic Ring-Opening Cross-Coupling of Cyclopropanols. Org Lett 2015; 17:2186-9. [PMID: 25885795 DOI: 10.1021/acs.orglett.5b00782] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first copper-catalyzed ring-opening electrophilic trifluoromethylation and trifluoromethylthiolation of cyclopropanols to form Csp3-CF3 and Csp3-SCF3 bonds have been realized. These transformations are efficient for the synthesis of β-CF3- and β-SCF3-substituted carbonyl compounds that are otherwise challenging to access. The reaction conditions are mild and tolerate a wide range of functional groups. Application to a concise synthesis of LY2409021, a glucagon receptor antagonist that is used in clinical trials for type 2 diabetes mellitus, is reported as well.
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Affiliation(s)
- Yong Li
- †Department of Chemistry and Center for Cancer Research, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Zhishi Ye
- †Department of Chemistry and Center for Cancer Research, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Tabitha M Bellman
- †Department of Chemistry and Center for Cancer Research, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Teng Chi
- ‡Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Mingji Dai
- †Department of Chemistry and Center for Cancer Research, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
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48
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Gao B, Zhao Y, Hu J, Hu J. Difluoromethyl 2-pyridyl sulfone: a versatile carbonyl gem-difluoroolefination reagent. Org Chem Front 2015. [DOI: 10.1039/c4qo00291a] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The gem-difluoroolefination of carbonyl compounds with difluoromethyl 2-pyridyl sulfone (2-PySO2CF2H) has been summarized in this tutorial account.
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Affiliation(s)
- Bing Gao
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Yanchuan Zhao
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Jingyu Hu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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