1
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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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2
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Bera T, Singh B, Gandon V, Saha J. Experimental and Theoretical Investigation of an Azaoxyallyl Cation‐Templated Intramolecular Aryl Amination Leading to Oxindole Derivatives. Chemistry 2022; 28:e202201208. [DOI: 10.1002/chem.202201208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Tishyasoumya Bera
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
| | - Bandana Singh
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182, Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168, Ecole Polytechnique Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau cedex France
| | - Jaideep Saha
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
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3
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Ishida Y, Nishikata T. Radical/Iminium Domino Strategy (RIDS) for Rapid Construction of Sterically Congested γ‐Lactam‐Based Multiheterocycles. Chemistry 2022; 28:e202201047. [DOI: 10.1002/chem.202201047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Yuto Ishida
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai Ube Yamaguchi 755-8611 Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai Ube Yamaguchi 755-8611 Japan
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4
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Levitre G, Granados A, Cabrera-Afonso MJ, Molander GA. Synthesis of α-Fluorinated Areneacetates through Photoredox/Copper Dual Catalysis. Org Lett 2022; 24:3194-3198. [PMID: 35467893 PMCID: PMC10412000 DOI: 10.1021/acs.orglett.2c00969] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The development of mild and practical conditions for the fluoroalkylation of arenes is an ongoing challenge in chemical organic synthesis. Herein, we report a metallaphotoredox method for the preparation of fluoroalkyl arenes based on the synergistic combination of Ir/Cu dual catalysis from boronic acids. The mild conditions allow broad functional group tolerance, including substrates containing aldehydes, free phenols, and N-Boc-protected amines. Mechanistic investigations support a process proceeding via photoredox/copper dual catalysis.
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Affiliation(s)
- Guillaume Levitre
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Pennsylvania 19104-6323, United States
| | - Albert Granados
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Pennsylvania 19104-6323, United States
| | - María Jesús Cabrera-Afonso
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Pennsylvania 19104-6323, United States
| | - Gary A. Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Pennsylvania 19104-6323, United States
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5
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Jiang X, Jiang Y, Liu Q, Li B, Shi DQ, Zhao Y. Visible-Light-Induced para-Difluoroalkylation of Aniline Derivatives. J Org Chem 2022; 87:3546-3554. [PMID: 35170321 DOI: 10.1021/acs.joc.1c03095] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Visible-light-induced, iridium catalyzed, para-selective C-H difluoroalkylation of aniline derivatives under mild reaction conditions is reported. Various substrates and bioactive compounds, such as precursors of vorinostat and chlorpropham, were all well tolerated. This protocol features a wide substrate scope, high regioselectivity, low catalyst usage, and operational simplicity.
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Affiliation(s)
- Xipeng Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Yaqiqi Jiang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Qianqian Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Bao Li
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, PR China
| | - Da-Qing Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, PR China
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6
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Fantinati A, Zanirato V, Marchetti P, Trapella C. The Fascinating Chemistry of α-Haloamides. ChemistryOpen 2020; 9:100-170. [PMID: 32025460 PMCID: PMC6996577 DOI: 10.1002/open.201900220] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 11/19/2019] [Indexed: 12/17/2022] Open
Abstract
The aim of this review is to highlight the rich chemistry of α-haloamides originally mainly used to discover new C-N, C-O and C-S bond forming reactions, and later widely employed in C-C cross-coupling reactions with C(sp3), C(sp2) and C(sp) coupling partners. Radical-mediated transformations of α-haloamides bearing a suitable located unsaturated bond has proven to be a straightforward alternative to access diverse cyclic compounds by means of either radical initiators, transition metal redox catalysis or visible light photoredox catalysis. On the other hand, cycloadditions with α-halohydroxamate-based azaoxyallyl cations have garnered significant attention. Moreover, in view of the important role in life and materials science of difluoroalkylated compounds, a wide range of catalysts has been developed for the efficient incorporation of difluoroacetamido moieties into activated as well as unactivated substrates.
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Affiliation(s)
- Anna Fantinati
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Vinicio Zanirato
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Paolo Marchetti
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Claudio Trapella
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
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7
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Ji W, Liu YA, Liao X. Transition-Metal-Free Synthesis of N-Hydroxy Oxindoles by an Aza-Nazarov-Type Reaction Involving Azaoxyallyl Cations. Angew Chem Int Ed Engl 2018; 55:13286-13289. [PMID: 27709823 DOI: 10.1002/anie.201607177] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Indexed: 01/15/2023]
Abstract
A novel transition-metal-free method to construct N-hydroxy oxindoles by an aza-Nazarov-type reaction involving azaoxyallyl cation intermediates is described. A variety of functional groups were tolerated under the weak basic reaction conditions and at room temperature. A one-pot process was also developed to make the reaction even more practical. This method provides alternative access to oxindoles and their biologically active derivatives.
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Affiliation(s)
- Wenzhi Ji
- School of Pharmaceutical Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, China
| | - Yahu A Liu
- Medicinal Chemistry, Genomics Institute of the Novartis Research Foundation, San Diego, CA, 92121, USA
| | - Xuebin Liao
- School of Pharmaceutical Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, China.
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8
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Mao XY, Lin XT, Yang M, Chen GS, Liu YL. Organocatalytic Synthesis of gem
-Difluorinated C2-Spiro Indolines and Pyrimido[1,2-a
]benzimidazoles from 2-Alkynyl-3,3-Difluoro-3H
-Indoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800716] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiang-Yu Mao
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering; Guangzhou University; 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Xiao-Tong Lin
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering; Guangzhou University; 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Meng Yang
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering; Guangzhou University; 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Guo-Shu Chen
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering; Guangzhou University; 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Yun-Lin Liu
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering; Guangzhou University; 230 Wai Huan Xi Road, Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
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9
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Reddy MK, Ramakrishna I, Baidya M. Divergent Reactivity of gem-Difluoro-enolates toward Nitrogen Electrophiles: Unorthodox Nitroso Aldol Reaction for Rapid Synthesis of α-Ketoamides. Org Lett 2018; 20:4610-4613. [PMID: 30033729 DOI: 10.1021/acs.orglett.8b01900] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An amination reaction of in situ generated gem-difluoro-enolates has been explored with electrophilic nitrogen sources. While their exposure to azodicarboxylates smoothly produced fluorinated α-amino ketones, reaction with nitrosoarenes (nitroso aldol reaction) furnished α-ketoamides in very high yields (up to 94%). The reaction is very fast (typically completed within 5 min) and scalable and tolerates various sensitive functional groups. Synthetic utility of this process was highlighted through the production of diverse nitrogen heterocycles and an orexin receptor antagonist.
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Affiliation(s)
- Mallu Kesava Reddy
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600 036 , Tamil Nadu , India
| | - Isai Ramakrishna
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600 036 , Tamil Nadu , India
| | - Mahiuddin Baidya
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600 036 , Tamil Nadu , India
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10
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Affiliation(s)
- Graham Pattison
- Department of Chemistry; University of Warwick; Gibbet Hill Road Coventry UK
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11
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Chen C, Zeng R, Zhang J, Zhao Y. Ruthenium-Catalyzed Difluoroalkylation of 8-Aminoquinoline Amides at the C5-Position. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701150] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Changpeng Chen
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; 215006 Suzhou China
| | - Runsheng Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 215123 Suzhou China
| | - Jingyu Zhang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; 215006 Suzhou China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 215123 Suzhou China
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12
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Fluoride-Catalyzed Nucleophilic Addition of PhSCF2
SiMe3
to Isatins: Synthesis of 3-(1′,1′-Difluoroalkyl)-3-hydroxyindolin-2-ones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Lv Y, Pu W, Wang Q, Chen Q, Niu J, Zhang Q. Copper-Catalyzed Aminodifluoroalkylation of Alkenes with α-Bromodifluoroacetamides: Synthesis of 3,3-Difluoropyrrolidin-2-ones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700559] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yunhe Lv
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Weiya Pu
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Qingqing Wang
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Qian Chen
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Jiejie Niu
- College of Chemistry and Chemical Engineering; Anyang Normal University; Anyang 455000, People's Republic of China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis; Department of Chemistry; Northeast Normal University; Changchun 130024 People's Republic of China
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14
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Karmakar U, Das D, Samanta R. Iridium-Catalysed Cascade Synthesis of Oxindoles Using Diazo Compounds: A Quick Entry to C-7-Functionalized Oxindoles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700214] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ujjwal Karmakar
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
| | - Debapratim Das
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
| | - Rajarshi Samanta
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
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15
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Affiliation(s)
- Vaibhav P. Mehta
- Integrated Product Development Organization; Innovation Plaza, Dr. Reddy's Laboratories; Bachupally, Qutubullapur 500072 Telangana India
| | - José-Antonio García-López
- Grupo de Química Organometálica. Dpto. Química Inorgánica; Universidad de Murcia; Campus de Espinardo 30100 Murcia Spain
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16
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Ke M, Song Q. Copper-Catalyzed 1,6-Hydrodifluoroacetylation ofpara-Quinone Methides at Ambient Temperature with Bis(pinacolato)diboron as Reductant. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600991] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Miaolin Ke
- Institute of Next Generation Matter Transformation, College of Chemical Engineering; College of Materials Science & Engineering at Huaqiao University; Fujian People's Republic of China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Chemical Engineering; College of Materials Science & Engineering at Huaqiao University; Fujian People's Republic of China
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17
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Nie X, Cheng C, Zhu G. Palladium-Catalyzed Remote Aryldifluoroalkylation of Alkenyl Aldehydes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611697] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xingliang Nie
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P.R. China
| | - Cungui Cheng
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P.R. China
| | - Gangguo Zhu
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P.R. China
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18
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Nie X, Cheng C, Zhu G. Palladium-Catalyzed Remote Aryldifluoroalkylation of Alkenyl Aldehydes. Angew Chem Int Ed Engl 2017; 56:1898-1902. [DOI: 10.1002/anie.201611697] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Xingliang Nie
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P.R. China
| | - Cungui Cheng
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P.R. China
| | - Gangguo Zhu
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 P.R. China
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19
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Ji W, Liu YA, Liao X. Transition-Metal-Free Synthesis of N
-Hydroxy Oxindoles by an Aza-Nazarov-Type Reaction Involving Azaoxyallyl Cations. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607177] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wenzhi Ji
- School of Pharmaceutical Sciences; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; China
| | - Yahu A. Liu
- Medicinal Chemistry; Genomics Institute of the Novartis Research Foundation; San Diego CA 92121 USA
| | - Xuebin Liao
- School of Pharmaceutical Sciences; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases; Tsinghua University; China
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20
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Wang X, Wan W, Chen Y, Li J, Jiang H, Wang Y, Deng H, Hao J. AgI-Promoted Cascade for Difluoromethylation of Activated Alkenes to Difluoromethylated Oxindoles. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600461] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xinglu Wang
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Wen Wan
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Ling Ling Road 345 Shanghai P. R. China
| | - Yunrong Chen
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Jialiang Li
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Haizhen Jiang
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Yong Wang
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
| | - Hongmei Deng
- Laboratory of Microstructures; Shanghai University; Shangda Road 99 200444 Shanghai P. R. China
| | - Jian Hao
- Department of Chemistry; Innovative Drug Research Center; Shanghai University; Shangda Road 99 Shanghai P. R. China
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Ling Ling Road 345 Shanghai P. R. China
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21
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Lao YX, Zhang SS, Liu XG, Jiang CY, Wu JQ, Li Q, Huang ZS, Wang H. High-Valent Pentamethylcyclopentadienylcobalt(III) or -iridium(III)-Catalyzed CH Annulation with Alkynes: Synthesis of Heterocyclic Quaternary Ammonium Salts. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600194] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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22
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Wei XJ, Wang L, Du SF, Wu LZ, Liu Q. Visible-light photoredox intramolecular difluoroacetamidation: facile synthesis of 3,3-difluoro-2-oxindoles from bromodifluoroacetamides. Org Biomol Chem 2016; 14:2195-9. [PMID: 26794806 DOI: 10.1039/c5ob02121a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We report an operationally simple, visible-light-driven protocol for intramolecular C-H difluoroacetamidation of arenes for the synthesis of biologically relevant 3,3-difluoro-2-oxindoles at room temperature. Using fac-Ir(ppy)3 as a photocatalyst and a 3 W blue LED as a light source, an array of difluoroxindoles was prepared from rapidly available tertiary aryl bromodifluoroacetamides in moderate to excellent yields.
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Affiliation(s)
- Xiao-Jing Wei
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
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23
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Visible-Light Photoredox-Catalyzed C−H Difluoroalkylation of Hydrazones through an Aminyl Radical/Polar Mechanism. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508698] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Xu P, Wang G, Zhu Y, Li W, Cheng Y, Li S, Zhu C. Visible-Light Photoredox-Catalyzed C-H Difluoroalkylation of Hydrazones through an Aminyl Radical/Polar Mechanism. Angew Chem Int Ed Engl 2015; 55:2939-43. [PMID: 26592803 DOI: 10.1002/anie.201508698] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 10/14/2015] [Indexed: 11/10/2022]
Abstract
An unprecedented visible-light-induced direct C-H bond difluoroalkylation of aldehyde-derived hydrazones was developed. This reaction represents a new way to synthesize substituted hydrazones. The salient features of this reaction include difluorinated hydrazone synthesis rather than classical amine synthesis, extremely mild reaction conditions, high efficiency, wide substrate scope, ease in further transformations of the products, and one-pot syntheses. Mechanistic analyses and theoretical calculations indicate that this reaction is enabled by a novel aminyl radical/polar crossover mechanism, with the aminyl radical being oxidized into the corresponding aminyl cation through a single electron transfer (SET) process.
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Affiliation(s)
- Pan Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Yuchen Zhu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Weipeng Li
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Yixiang Cheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 200032, P. R. China.
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25
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Saulnier S, Ciardi M, Lopez-Carrillo V, Gualandi A, Cozzi PG. A Versatile Organocatalytic Approach for the Synthesis of Enantioenriched gem-Difluorinated Compounds. Chemistry 2015; 21:13689-95. [PMID: 26239866 DOI: 10.1002/chem.201502099] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Indexed: 11/11/2022]
Abstract
The combination of a practical and highly enantioselective organocatalytic reaction, which allows the stereoselective introduction of a benzodithiol group, with a fluorination step, gives a new and effective strategy for the stereoselective synthesis of difluorinated building blocks. The benzodithiol group is a versatile and chameleonic group that can be further functionalized before fluorination, giving customized and tailored useful synthetic strategies. As an example of the application of this facile strategy, the effective enantioselective synthesis of difluoroarundic acid is described.
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Affiliation(s)
- Steve Saulnier
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Moira Ciardi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy).,Université catholique de Louvain, Institute of Condensed Matter and Nanosciences, Croix du Sud, 1 bte L7.04.02, room a.241, 1348 Louvain-la-Neuve (Belgium)
| | - Veronica Lopez-Carrillo
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Andrea Gualandi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy).
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26
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Pedroni J, Cramer N. Chiral γ-Lactams by Enantioselective Palladium(0)-Catalyzed Cyclopropane Functionalizations. Angew Chem Int Ed Engl 2015; 54:11826-9. [PMID: 26271618 DOI: 10.1002/anie.201505916] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Indexed: 01/16/2023]
Abstract
Cyclopropanes fused to pyrrolidines are important structural features found in a number of marketed drugs and development candidates. Typically, their synthesis involves the cyclopropanation of a dihydropyrrole precursor. Reported herein is a complementary approach which employs a palladium(0)-catalyzed C-H functionalization of an achiral cyclopropane to close the pyrrolidine ring in an enantioselective manner. In contrast to aryl-aryl couplings, palladium(0)-catalyzed C-H functionalizations involving the formation of C(sp(3) )-C(sp(3) ) bonds of saturated heterocycles are very scarce. The presented strategy yields cyclopropane-fused γ-lactams from chloroacetamide substrates. A bulky Taddol phosphonite ligand in combination with adamantane-1-carboxylic acid as a cocatalyst provides the γ-lactams in excellent yields and enantioselectivities.
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Affiliation(s)
- Julia Pedroni
- Laboratory of Asymmetric Catalysis and Synthesis, EPFL SB ISIC LCSA, BCH 4305, 1015 Lausanne (Switzerland) http://isic.epfl.ch/lcsa
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, EPFL SB ISIC LCSA, BCH 4305, 1015 Lausanne (Switzerland) http://isic.epfl.ch/lcsa.
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27
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Pedroni J, Cramer N. Chiral γ-Lactams by Enantioselective Palladium(0)-Catalyzed Cyclopropane Functionalizations. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505916] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Belhomme MC, Besset T, Poisson T, Pannecoucke X. Recent Progress toward the Introduction of Functionalized Difluoromethylated Building Blocks onto C(sp2) and C(sp) Centers. Chemistry 2015; 21:12836-65. [DOI: 10.1002/chem.201501475] [Citation(s) in RCA: 268] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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29
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Xu J, Ahmed EA, Xiao B, Lu QQ, Wang YL, Yu CG, Fu Y. Pd-Catalyzed Regioselective Activation ofgem-Difluorinated Cyclopropanes: A Highly Efficient Approach to 2-Fluorinated Allylic Scaffolds. Angew Chem Int Ed Engl 2015; 54:8231-5. [DOI: 10.1002/anie.201502308] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 04/17/2015] [Indexed: 12/23/2022]
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30
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Xu J, Ahmed EA, Xiao B, Lu QQ, Wang YL, Yu CG, Fu Y. Pd-Catalyzed Regioselective Activation ofgem-Difluorinated Cyclopropanes: A Highly Efficient Approach to 2-Fluorinated Allylic Scaffolds. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502308] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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