1
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Wang Y, Tsui GC. Stereodivergent Palladium-Catalyzed C-F Bond Functionalization of gem-Difluoroalkenes. Org Lett 2024. [PMID: 38937877 DOI: 10.1021/acs.orglett.4c02112] [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
We herein describe a stereodivergent C-F bond functionalization of gem-difluoroalkenes. Using trisubstituted β,β-difluoroacrylates, both E and Z monofluoroalkene products can be obtained with excellent diastereoselectivities. The design of two different reaction manifolds, i.e., Pd(II)- versus Pd(0)-catalyzed cross-coupling of boronic acids, is the key to stereocontrol.
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Affiliation(s)
- Yanhui Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, Shanghai 200032, China
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2
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Skibinska M, Warowicka A, Koroniak H, Cytlak T, Crousse B. Synthesis, Reactivity, and Antibacterial Activity of gem-Difluoroalkene, Difluoromethyl, and Trifluoromethyl β-Lactams. Org Lett 2024; 26:692-696. [PMID: 38227548 PMCID: PMC10825868 DOI: 10.1021/acs.orglett.3c04094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 01/17/2024]
Abstract
New gem-difluoroalkenes were synthesized by the dehydrofluorination of the corresponding 4-CF3-β-lactams. An unexpected rearrangement mechanism of the ester moiety dependent on a stabilizing negative charge was observed. Hydrogenation to 4-CHF2-β-lactams was successful from gem-difluoro-β-lactams.
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Affiliation(s)
- Monika Skibinska
- Faculty
of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego
8, 61-614 Poznań, Poland
| | - Alicja Warowicka
- Faculty
of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego
6, 61-614 Poznań, Poland
| | - Henryk Koroniak
- Faculty
of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego
8, 61-614 Poznań, Poland
| | - Tomasz Cytlak
- Faculty
of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego
8, 61-614 Poznań, Poland
- Centre
for Advanced Technologies, Adam Mickiewicz
University, Uniwersytetu
Poznańskiego 10, 61-614 Poznań, Poland
| | - Benoît Crousse
- BioCIS
UMR 8076 CNRS, Building Henri Moissan, Université
Paris-Saclay, 17 avenue
des sciences, 91400 Orsay, France
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3
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Liu A, Zhang X, Zhao F, Ni C, Hu J. Controllable Fluorocarbon Chain Elongation: TMSCF 2Br-Enabled Trifluorovinylation and Pentafluorocyclopropylation of Aldehydes. J Am Chem Soc 2024; 146:1806-1812. [PMID: 38193677 DOI: 10.1021/jacs.3c12919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Controllable fluorocarbon chain elongation (CFCE) is a promising yet underdeveloped strategy for the well-defined synthesis of structurally novel polyfluorinated compounds. Herein, the direct and efficient trifluorovinylation and pentafluorocyclopropylation of aldehydes are described by using TMSCF2Br (TMS = trimethylsilyl) as the sole fluorocarbon source, accomplishing the goals of CFCE from C1 to C2 and from C1 to C3, respectively. The key to the success of these CFCE processes lies in the unique and diversified chemical reactivity of TMSCF2Br, which can serve as two different precursors, namely, a TMSCF2 radical precursor and a difluorocarbene precursor. Various functional groups are amenable to this new synthetic protocol, providing streamlined access to a broad range of alcohols containing trifluorovinyl or pentafluorocyclopropyl moieties from abundantly available aldehydes. The potential utility of these methods is further demonstrated by the gram-scale synthesis, derivatization, and measurement of log P values of the products.
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Affiliation(s)
- An Liu
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Xianghong Zhang
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Feng Zhao
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Chuanfa Ni
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, 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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4
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Li M, Tsui GC. Stereoselective Palladium-Catalyzed Hiyama Cross-Coupling Reaction of Tetrasubstituted gem-Difluoroalkenes. Org Lett 2024; 26:376-379. [PMID: 38153354 PMCID: PMC10789091 DOI: 10.1021/acs.orglett.3c04037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/25/2023] [Accepted: 12/27/2023] [Indexed: 12/29/2023]
Abstract
We herein describe a diastereoselective Pd(0)-catalyzed Hiyama cross-coupling reaction of gem-difluoroalkenes. The use of organosilicon reagents in this reaction is advantageous over other organometallic reagents by allowing the introduction of a wide range of functional groups, including challenging alkyl groups. Also conveniently, the additive TBAF was not required for (hetero)aryl-substituted difluoroalkenes.
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Affiliation(s)
- Min Li
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
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5
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Hooker LV, Bandar JS. Synthetic Advantages of Defluorinative C-F Bond Functionalization. Angew Chem Int Ed Engl 2023; 62:e202308880. [PMID: 37607025 PMCID: PMC10843719 DOI: 10.1002/anie.202308880] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/20/2023] [Accepted: 08/21/2023] [Indexed: 08/24/2023]
Abstract
Much progress has been made in the development of methods to both create compounds that contain C-F bonds and to functionalize C-F bonds. As such, C-F bonds are becoming common and versatile synthetic functional handles. This review summarizes the advantages of defluorinative functionalization reactions for small molecule synthesis. The coverage is organized by the type of carbon framework the fluorine is attached to for mono- and polyfluorinated motifs. The main challenges, opportunities and advances of defluorinative functionalization are discussed for each class of organofluorine. Most of the text focuses on case studies that illustrate how defluorofunctionalization can improve routes to synthetic targets or how the properties of C-F bonds enable unique mechanisms and reactions. The broader goal is to showcase the opportunities for incorporating and exploiting C-F bonds in the design of synthetic routes, improvement of specific reactions and advent of new methods.
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Affiliation(s)
- Leidy V Hooker
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA
| | - Jeffrey S Bandar
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA
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6
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Sperga A, Veliks J. Recent Advances in Monofluorinated Carbenes, Carbenoids, Ylides, and Related Species. Chemistry 2023:e202301851. [PMID: 37902650 DOI: 10.1002/chem.202301851] [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: 06/15/2023] [Indexed: 10/31/2023]
Abstract
The synthesis of monofluorinated compounds is of great interest because of the vast applications of organofluorine compounds. Recently, the introduction of monofluorocarbene synthons has emerged as an important strategy for the synthesis of fluorine-containing products. In contrast to direct fluorination, in which C-F bonds are formed, the use of monofluorinated carbenes and related reactive species involves C-C or C-X bond formation while delivering valuable fluorine atoms into the target structure. Owing to increased knowledge on carbon-carbon and carbon-heteroatom bond formations, monofluorinated carbenes have enormous potential for the synthesis of organofluorine compounds, which, in our opinion, has not yet been fully exploited. This review summarizes the recent advances in the synthetic applications of monofluorinated carbenes, carbenoids, ylides, and related species.
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Affiliation(s)
- Arturs Sperga
- Latvian Institute of OrganicSynthesis, Aizkrauklesiela 21, 1006, Riga, Latvia
| | - Janis Veliks
- Latvian Institute of OrganicSynthesis, Aizkrauklesiela 21, 1006, Riga, Latvia
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7
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Gauthier R, Paquin JF. Hydrofluorination of Alkynes: From (E) to (Z). Chemistry 2023; 29:e202301896. [PMID: 37458694 DOI: 10.1002/chem.202301896] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Indexed: 09/09/2023]
Abstract
The hydrofluorination of alkynes is an efficient synthetic route to monofluoroalkenes or difluoroalkanes. Both fluorinated motifs have found applications in medicinal chemistry and beyond. This review explores the recent advances in the hydrofluorination of diverse alkynes through various activation methods, from classical coinage metal catalysis to metal-free conditions. The range of alkynes goes from the simplest unactivated alkynes to activated ones (ynones and derivatives, ynamides, alkynyl sulfides and sulfones as much as haloalkynes). Regio- and stereoselective methods exists, but there is still room for improvement depending on the type of alkyne.
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Affiliation(s)
- Raphaël Gauthier
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Jean-François Paquin
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
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8
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Wang Y, Tsui GC. Stereoselective Palladium-Catalyzed C-F Bond Alkenylation of Tetrasubstituted gem-Difluoroalkenes via Mizoroki-Heck Reaction. Org Lett 2023; 25:6217-6221. [PMID: 37584488 PMCID: PMC10463225 DOI: 10.1021/acs.orglett.3c02452] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Indexed: 08/17/2023]
Abstract
A highly diastereoselective Pd(0)-catalyzed Mizoroki-Heck reaction of gem-difluoroalkenes is described. Unlike previously reported C-F bond functionalization with organometallic reagents, this reaction takes place between two different alkenes to achieve a formal C-F and C-H bond cross-coupling via a distinct pathway. Monofluorinated 1,3-diene products can be synthesized with control of the geometry of each alkene and good functional group tolerability.
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Affiliation(s)
- Yanhui Wang
- Department
of Chemistry, The Chinese University of
Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
| | - Gavin Chit Tsui
- Department
of Chemistry, The Chinese University of
Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
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9
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Yang H, Wang J, Jin C, Li X, Xu X. Au(I)-Catalyzed Regioselective Hydrofluorination of Propargylamines Using Aqueous HF. J Org Chem 2023; 88:12074-12078. [PMID: 37494279 DOI: 10.1021/acs.joc.3c00594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Gold-catalyzed regioselective hydrofluorination of alkynes using aqueous HF has been achieved by employing an amide directing group. For both aryl- and alkyl-substituted propargylamines, the fluorination occurred at the site distal to the amino group.
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Affiliation(s)
- Hui Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Jie Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Can Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xiaoqing Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xiangsheng Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China
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10
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Volchkov I, Powell BV, Zatolochnaya OV, Leung JC, Pennino S, Wu L, Gonnella NC, Bhaskararao B, Kozlowski MC, Reeves JT. Practical Synthesis of Terminal Vinyl Fluorides. J Org Chem 2023; 88:10881-10904. [PMID: 37441763 PMCID: PMC10530197 DOI: 10.1021/acs.joc.3c00917] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
The synthesis of di- and trisubstituted vinyl fluorides with high isomeric purity remains a challenge for organic synthesis. While many methods exist to access these compounds, the separation of the desired isomer from the minor isomer and/or starting materials often is difficult. Herein, we report a practical method to access di- and trisubstituted vinyl fluorides via a selective Horner-Wadsworth-Emmons olefination/hydrolysis, which provides crystalline 2-fluoroacrylic acids in high (>98%) E-isomeric purity. A subsequent silver-catalyzed stereoretentive decarboxylation provides the title substances with high isomeric purity and without the need for tedious chromatography to remove the minor isomer. The process was amenable to a variety of aldehydes and ketones and provided a diverse array of di- and trisubstituted vinyl fluorides. The sequence was applied to the synthesis of antibacterial and anti-inflammatory compounds.
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Affiliation(s)
- Ivan Volchkov
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
| | - Brent V. Powell
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
| | - Olga V. Zatolochnaya
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
| | - Joyce C. Leung
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
| | - Scott Pennino
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
| | - Lifen Wu
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
| | - Nina C. Gonnella
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
| | - Bangaru Bhaskararao
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Marisa C. Kozlowski
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Jonathan T. Reeves
- Departments of Chemical Development and Material and Analytical Sciences, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut 06877, United States
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11
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Lu MZ, Goh J, Maraswami M, Jia Z, Tian JS, Loh TP. Recent Advances in Alkenyl sp 2 C-H and C-F Bond Functionalizations: Scope, Mechanism, and Applications. Chem Rev 2022; 122:17479-17646. [PMID: 36240299 DOI: 10.1021/acs.chemrev.2c00032] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Alkenes and their derivatives are featured widely in a variety of natural products, pharmaceuticals, and advanced materials. Significant efforts have been made toward the development of new and practical methods to access this important class of compounds by selectively activating the alkenyl C(sp2)-H bonds in recent years. In this comprehensive review, we describe the state-of-the-art strategies for the direct functionalization of alkenyl sp2 C-H and C-F bonds until June 2022. Moreover, metal-free, photoredox, and electrochemical strategies are also covered. For clarity, this review has been divided into two parts; the first part focuses on currently available alkenyl sp2 C-H functionalization methods using different alkene derivatives as the starting materials, and the second part describes the alkenyl sp2 C-F bond functionalization using easily accessible gem-difluoroalkenes as the starting material. This review includes the scope, limitations, mechanistic studies, stereoselective control (using directing groups as well as metal-migration strategies), and their applications to complex molecule synthesis where appropriate. Overall, this comprehensive review aims to document the considerable advancements, current status, and emerging work by critically summarizing the contributions of researchers working in this fascinating area and is expected to stimulate novel, innovative, and broadly applicable strategies for alkenyl sp2 C-H and C-F bond functionalizations in the coming years.
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Affiliation(s)
- Ming-Zhu Lu
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Jeffrey Goh
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Manikantha Maraswami
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhenhua Jia
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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12
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Organophotoredox-catalyzed ring-opening gem-difluoroallylation of nonstrained cycloalkanols. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Han S, Lee Y, Jung Y, Cho SH. Stereoselective Access to Tetra‐ and Tri‐Substituted Fluoro‐ and Chloro‐Borylalkenes via Boron‐Wittig Reaction. Angew Chem Int Ed Engl 2022; 61:e202210532. [DOI: 10.1002/anie.202210532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Seungcheol Han
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Yeosan Lee
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Yujin Jung
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea
- Institute for Convergence Research and Education in Advanced Technology (I–CREATE) Yonsei University Seoul 03722 Republic of Korea
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14
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Xu P, Daniliuc CG, Bergander K, Stein C, Studer A. Synthesis of Five-Membered Ring Systems Bearing gem-Difluoroalkenyl and Monofluoroalkenyl Substituents via Radical β-Bromo Fragmentation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peng Xu
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, Münster 48149, Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, Münster 48149, Germany
| | - Klaus Bergander
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, Münster 48149, Germany
| | - Colin Stein
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, Münster 48149, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, Münster 48149, Germany
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15
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Han S, Lee Y, Jung Y, Cho SH. Stereoselective Access to Tetra‐ and Tri‐Substituted Fluoro‐ and Chloro‐borylalkenes via Boron‐Wittig Reaction. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Seungcheol Han
- POSTECH: Pohang University of Science and Technology Chemistry KOREA, REPUBLIC OF
| | - Yeosan Lee
- POSTECH: Pohang University of Science and Technology Chemistry KOREA, REPUBLIC OF
| | - Yujin Jung
- POSTECH: Pohang University of Science and Technology Chemistry KOREA, REPUBLIC OF
| | - Seung Hwan Cho
- Pohang University of Science and Technology (POSTECH) Chemistry San 31, HyojadongNamgu 37673 Pohang KOREA, REPUBLIC OF
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16
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Zong Y, Tang Y, Tsui GC. Rhodium(I)-Catalyzed Defluorinative Coupling of Boronic Acids with Monofluoroalkenes. Org Lett 2022; 24:6380-6385. [PMID: 35925659 DOI: 10.1021/acs.orglett.2c02294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We herein describe a highly selective Rh(I)-catalyzed defluorinative coupling of boronic acids with (E)-β-monofluoroacrylates. In contrast to previous methods, the trisubstituted (Z)-alkene products were obtained in excellent dr with an inversion of double bond geometry. Experimental and computational studies established that Rh(I)-facilitated β-F elimination is favored over competing β-H elimination and protodemetalation.
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Affiliation(s)
- Yuwei Zong
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Yihan Tang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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17
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Sander S, Braun T. Platinum‐Catalyzed Hydrofluorination of Alkynes: Hydrogen Bonding to Indolylphosphine Ligands to Provide Fluoride Reactivity. Angew Chem Int Ed Engl 2022; 61:e202204678. [PMID: 35420731 PMCID: PMC9401575 DOI: 10.1002/anie.202204678] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Indexed: 11/20/2022]
Abstract
The reaction of the Pt complexes cis‐[Pt(CH3)2{R2P(Ind)}2] (Ind=2‐(3‐methyl)indolyl, R=Ph (1 a), 4‐FC6H4 (1 b), 4‐CF3C6H4 (1 c)) with HF afforded the fluorido complexes trans‐[Pt(F(HF)2)(CH3){R2P(Ind)}2] 2 a–c, which can be converted into trans‐[Pt(F)(CH3){R2P(Ind)}2] (3 a–c) by treatment with CsF. Addition of 3‐hexyne to 2 a–c gave alkyne complexes trans‐[Pt(C,C‐η2‐C2H5C≡CC2H5)(CH3){R2P(Ind)}2{F(HF)2}] (4 a–c) at which a fluoride is stabilised as polyfluoride in the coordination sphere by hydrogen bonding to the indolyl‐substituted phosphine ligands. Subsequent heating of a solution of 4 a in the presence of PVPHF led to fluoroalkene formation. Selective catalytic hydrofluorination of alkynes to yield (Z)‐fluoroalkenes were developed. The ability of hydrogen bonding to polyfluoride favours the fluorination step as demonstrated by studies with complexes bearing no indolyl groups at the phosphine ligands.
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Affiliation(s)
- Stefan Sander
- Department of Chemistry Humboldt Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Thomas Braun
- Department of Chemistry Humboldt Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
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18
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Sander S, Braun T. Platinum‐Catalyzed Hydrofluorination of Alkynes: Hydrogen Bonding to Indolylphosphine Ligands to Provide Fluoride Reactivity. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stefan Sander
- Humboldt-Universität zu Berlin: Humboldt-Universitat zu Berlin chemistry GERMANY
| | - Thomas Braun
- Humboldt University Chemistry Brook-Taylor Str. 2 12489 Berlin GERMANY
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19
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Mulryan D, Rodwell J, Phillips NA, Crimmin MR. Au(I) Catalyzed HF Transfer: Tandem Alkyne Hydrofluorination and Perfluoroarene Functionalization. ACS Catal 2022; 12:3411-3419. [PMID: 35433106 PMCID: PMC9007466 DOI: 10.1021/acscatal.1c05474] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/17/2022] [Indexed: 12/17/2022]
Abstract
![]()
HF
transfer reactions between organic substrates are potentially
useful transformations. Such reactions require the development of
catalytic systems that can promote both defluorination and fluorination
steps in a single reaction sequence. Herein, we report a catalytic
protocol in which an equivalent of HF is generated from a perfluoroarene
| nucleophile pair and transferred directly to an alkyne. The reaction
is catalyzed by [Au(IPr)NiPr2] (IPr = N,N′-1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene).
HF transfer generates two useful products in the form of functionalized
fluoroarenes and fluoroalkenes. Mechanistic studies (rate laws, KIEs,
density functional theory (DFT) calculations, competition experiments)
are consistent with the Au(I) catalyst facilitating a catalytic network
involving both concerted SNAr and hydrofluorination steps.
The nature of the nucleophile impacts the turnover-limiting step.
The cSNAr step is turnover-limiting for phenol-based nucleophiles,
while protodeuaration likely
becomes turnover-limiting for aniline-based nucleophiles. The approach
removes the need for direct handling of HF reagents in hydrofluorination
and offers possibilities to manipulate the fluorine content of organic
molecules through catalysis.
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Affiliation(s)
- Daniel Mulryan
- Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds
Bush, London W12 0BZ, U.K
| | - Jack Rodwell
- Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds
Bush, London W12 0BZ, U.K
| | - Nicholas A. Phillips
- Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds
Bush, London W12 0BZ, U.K
| | - Mark R. Crimmin
- Molecular Sciences Research Hub, Imperial College London, 82 Wood Lane, Shepherds
Bush, London W12 0BZ, U.K
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20
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Lin H, Jiao W, Chen Z, Han J, Fang D, Wang M, Liao J. Enantioselective Cu-Catalyzed Nucleophilic Addition of Fluorinated Reagents: C–C Bond Formation for the Synthesis of Chiral Vicinal Difluorides. Org Lett 2022; 24:2197-2202. [DOI: 10.1021/acs.orglett.2c00518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Huaxin Lin
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Jiao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiwei Chen
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Han
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Dongmei Fang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Min Wang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
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21
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Wigman B, Lee W, Wei W, Houk KN, Nelson HM. Electrochemical Fluorination of Vinyl Boronates through Donor-Stabilized Vinyl Carbocation Intermediates. Angew Chem Int Ed Engl 2022; 61:e202113972. [PMID: 35029844 PMCID: PMC8901537 DOI: 10.1002/anie.202113972] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Indexed: 01/24/2023]
Abstract
The electrochemical generation of vinyl carbocations from alkenyl boronic esters and boronates is reported. Using easy-to-handle nucleophilic fluoride reagents, these intermediates are trapped to form fully substituted vinyl fluorides. Mechanistic studies support the formation of dicoordinated carbocations through sequential single-electron oxidation events. Notably, this electrochemical fluorination features fast reaction times and Lewis acid-free conditions. This transformation provides a complementary method to access vinyl fluorides with simple fluoride salts such as TBAF.
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Affiliation(s)
- Benjamin Wigman
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Woojin Lee
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Wenjing Wei
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Hosea M Nelson
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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22
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Liu Q, Mu Y, Koengeter T, Schrock RR, Hoveyda AH. Stereodefined alkenes with a fluoro-chloro terminus as a uniquely enabling compound class. Nat Chem 2022; 14:463-473. [PMID: 35177787 PMCID: PMC9769398 DOI: 10.1038/s41557-022-00893-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 01/12/2022] [Indexed: 11/10/2022]
Abstract
Trisubstituted alkenyl fluorides are important compounds for drug discovery, agrochemical development and materials science. Despite notable progress, however, many stereochemically defined trisubstituted fluoroalkenes either cannot be prepared efficiently or can only be accessed in one isomeric form. Here we outline a general solution to this problem by first unveiling a practical, widely applicable and catalytic strategy for stereodivergent synthesis of olefins bearing a fluoro-chloro terminus. This has been accomplished by cross-metathesis between two trisubstituted olefins, one of which is a purchasable but scarcely utilized trihaloalkene. Subsequent cross-coupling can then be used to generate an assortment of trisubstituted alkenyl fluorides. The importance of the advance is highlighted by syntheses of, among others, a fluoronematic liquid-crystal component, peptide analogues bearing an E- or a Z-amide bond mimic, and all four stereoisomers of difluororumenic ester (an anti-cancer compound).
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Affiliation(s)
- Qinghe Liu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Yucheng Mu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Tobias Koengeter
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA
| | - Richard R Schrock
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, USA. .,Supramolecular Science and Engineering Institute, University of Strasbourg, CNRS, Strasbourg, France.
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23
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Wigman B, Lee W, Wei W, Houk KN, Nelson HM. Electrochemical Fluorination of Vinyl Boronates through Donor‐Stabilized Vinyl Carbocation Intermediates**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Benjamin Wigman
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Woojin Lee
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Wenjing Wei
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Hosea M. Nelson
- Department of Chemistry and Chemical Engineering California Institute of Technology Pasadena CA 91125 USA
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24
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Li C, Li H, Yao G, Liang X, Zhao C, Xu H, Jiang H, Zhu C. Chemo- and regioselective defluorinative annulation of (trifluoromethyl)alkenes with pyrazolones: synthesis and insecticidal activity of 6-fluoro-1,4-dihydropyrano[2,3- c]pyrazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo00786j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chemo- and regioselective defluorinative [3 + 3] annulation of (trifluoromethyl)alkenes and pyrazolones gives useful 6-fluoro-1,4-dihydropyrano[2,3-c]pyrazoles.
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Affiliation(s)
- Chengxi Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
| | - Hengyuan Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
| | - Guangkai Yao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Xianghui Liang
- School of Chemistry and Chemical Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
| | - Chen Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
| | - Chuanle Zhu
- School of Chemistry and Chemical Engineering, Key Laboratory of Functional Molecular Engineering of Guangdong Province, South China University of Technology, Guangzhou 510640, China
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25
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Stereoselective formation of Z-monofluoroalkenes by nickel-catalyzed defluorinative coupling of gem-difluoroalkenes with lithium organoborates. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Zeng H, Li H, Li C, Jiang H, Zhu C. Bond Energy Enabled Amines Distinguishing: Chemo-, Regioselective 1,3-Diamination of (Trifluoromethyl)alkenes with Different Amines by Two C(sp3)-F Bonds Cleavage. Org Chem Front 2022. [DOI: 10.1039/d1qo01849c] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The methods to distinguish different amines are rarely investigated. In this manuscript, a bond energy enabled amines distinguishing strategy is reported. With (trifluoromethyl)alkenes as linchpins, a chemo-, regioselective three-component defluorinative...
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27
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Wang Z, Sun Y, Shen LY, Yang WC, Meng F, Li P. Photochemical and electrochemical strategies in C–F bond activation and functionalization. Org Chem Front 2022. [DOI: 10.1039/d1qo01512e] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The recent advances in photochemical or electrochemical C–F bond activation and functionalization have been summarized and discussed.
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Affiliation(s)
- Zhanghong Wang
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, PR China
| | - Yu Sun
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, P. R. China
| | - Liu-Yu Shen
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, P. R. China
| | - Wen-Chao Yang
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, P. R. China
| | - Fei Meng
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, P. R. China
| | - Pinhua Li
- Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Complexes for Materials Chemistry and Application, College of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, P. R. of China
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28
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Morand S, Jubault P, Bouillon JP, Couve-Bonnaire S. gem-Heteroatom-Substituted Fluoroalkenes as Mimics of Amide Derivatives or Phosphates: A Comprehensive Review. Chemistry 2021; 27:17273-17292. [PMID: 34533868 DOI: 10.1002/chem.202102548] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Indexed: 01/18/2023]
Abstract
gem-Heteroatom-substituted fluoroalkenes have received little attention despite their great potential in medicinal chemistry or in fine chemistry. Indeed, due to the electronic and steric similarity between the fluoroalkene moiety and the amide bond as well as the high strength of the carbon-fluorine bond, these gem-heteroatom-substituted fluoroalkenes could be envisioned as stable mimics of various important organic functions, such as phosphates, carbamates, S-thiocarbamates and ureas. We present herein an overview describing the syntheses over the last decade of heteroatom-substituted fluoroalkenes in geminal position. This review will be divided into several sections covering each the common following heteroatom: oxygen-, nitrogen-, sulfur-, phosphorus-, boron- and silicon-substituted fluoroalkenes.
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Affiliation(s)
- Solène Morand
- Normandie Université INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | - Philippe Jubault
- Normandie Université INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
| | | | - Samuel Couve-Bonnaire
- Normandie Université INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000, Rouen, France
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29
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Steric-switched defluorofunctionalization selectivity: controlled synthesis of monofluoroalkene-masked medium-sized heterocyclic lactams and lactones. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1135-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Gauthier R, Tzouras NV, Zhang Z, Bédard S, Saab M, Falivene L, Van Hecke K, Cavallo L, Nolan SP, Paquin JF. Gold N-Heterocyclic Carbene Catalysts for the Hydrofluorination of Alkynes Using Hydrofluoric Acid: Reaction Scope, Mechanistic Studies and the Tracking of Elusive Intermediates. Chemistry 2021; 28:e202103886. [PMID: 34739142 DOI: 10.1002/chem.202103886] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Indexed: 11/07/2022]
Abstract
An efficient and chemoselective methodology deploying gold-N-heterocyclic carbene (NHC) complexes as catalysts in the hydrofluorination of terminal alkynes using aqueous HF has been developed. Mechanistic studies shed light on an in situ generated catalyst, formed by the reaction of Brønsted basic gold pre-catalysts with HF in water, which exhibits the highest reactivity and chemoselectivity. The catalytic system has a wide alkyl substituted-substrate scope, and stoichiometric as well as catalytic reactions with tailor-designed gold pre-catalysts enable the identification of various gold species involved along the catalytic cycle. Computational studies aid in understanding the chemoselectivity observed through examination of key mechanistic steps for phosphine- and NHC-coordinated gold species bearing the triflate counterion and the elusive key complex bearing a bifluoride counterion.
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Affiliation(s)
- Raphaël Gauthier
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Nikolaos V Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Ziyun Zhang
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Sandrine Bédard
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Marina Saab
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Laura Falivene
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Luigi Cavallo
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Steven P Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Jean-François Paquin
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
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31
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Li M, Wang Y, Tsui GC. Palladium-Catalyzed Stereoselective C-F Bond Vinylation and Allylation of Tetrasubstituted gem-Difluoroalkenes via Stille Coupling: Synthesis of Monofluorinated 1,3- and 1,4-Dienes. Org Lett 2021; 23:8072-8076. [PMID: 34585935 DOI: 10.1021/acs.orglett.1c03096] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We herein describe a Pd-catalyzed stereoselective C-F bond vinylation and allylation reaction of tetrasubstituted gem-difluoroalkenes for the synthesis of valuable monofluorinated 1,3- and 1,4-dienes with excellent diastereoselectivities. Different from previously used Pd(PPh3)4, a catalytic system involving Pd(0) and dppe as the ligand was developed for Stille-type cross-coupling between gem-difluoroalkenes and vinyl- and allyltin reagents.
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Affiliation(s)
- Min Li
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
| | - Yanhui Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
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32
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Nouaille A, Lorkowski J, Pannecoucke X, Mauduit M, Poisson T, Couve-Bonnaire S. Metal-Catalyzed Metathesis of Fluorinated Alkenes: Still a Current Major Challenge. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03414] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Augustin Nouaille
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Jan Lorkowski
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France
| | - Xavier Pannecoucke
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Marc Mauduit
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France
| | - Thomas Poisson
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
- Institut Universitaire de France, 1, rue Descartes 75231 Paris, France
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33
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Gao QS, Niu Z, Chen Y, Sun J, Han WY, Wang JY, Yu M, Zhou MD. Photoredox Generation of N-Centered Hydrazonyl Radicals Enables the Construction of Dihydropyrazole-Fused gem-Difluoroalkenes. Org Lett 2021; 23:6153-6157. [PMID: 34269587 DOI: 10.1021/acs.orglett.1c02275] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient visible-light-promoted N-radical-mediated tandem radical cyclization/defluorinated alkylation of β,γ-unsaturated hydrazones, and α-trifluoromethyl alkenes is described. This protocol provides a general and effective route to synthesize various dihydropyrazole-fused gem-difluoroalkenes at moderate to excellent yields under redox-neutral, metal-free, and mild conditions.
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Affiliation(s)
- Qi-Sheng Gao
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Zhuo Niu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Yang Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Jing Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Wei-Ying Han
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Jing-Yun Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Miao Yu
- Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Shenyang 110001, China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
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34
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Wang Y, Ma Q, Tsui GC. Stereoselective Synthesis of Difluorinated 1,3-Dienes via Palladium-Catalyzed C-F Bond Activation of Tetrasubstituted gem-Difluoroalkenes. Org Lett 2021; 23:5241-5245. [PMID: 34114459 DOI: 10.1021/acs.orglett.1c01768] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A highly diastereoselective Pd(0)-catalyzed synthesis of difluorinated 1,3-dienes is described. Symmetrical 1,3-dienes containing a vicinal difluoro moiety can be obtained as single diastereomers from tetrasubstituted gem-difluoroalkenes. The reaction presumably proceeds through a stereoselective twofold Pd-catalyzed Miyaura borylation/Suzuki-Miyaura cross-coupling of the C-F bond. Moreover, modular synthesis of unsymmetrical difluorinated 1,3-dienes is also achievable by the coupling between gem-difluoroalkenes and borylated monofluoroalkenes.
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Affiliation(s)
- Yanhui Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Qiao Ma
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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35
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An D, Sang J, Hu R, Chen J, Feng L, Rao W. Synthesis of 2‐Phosphoryl‐3‐Monofluorovinylindoles under Catalyst‐ and Additive‐Free Conditions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Di An
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Jingjing Sang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Rui Hu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Jichao Chen
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Li Feng
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Weidong Rao
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
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36
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Bobrova AY, Novikov MA, Tomilov YV. (2-Fluoroallyl)pyridinium tetrafluoroborates: novel fluorinated electrophiles for Pd-catalyzed allylic substitution. Org Biomol Chem 2021; 19:4678-4684. [PMID: 34076023 DOI: 10.1039/d1ob00567g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient two-step approach to 2-fluoroallyl amines was developed that involves the synthesis of (2-fluoroallyl)pyridinium tetrafluoroborates from readily available gem-bromofluorocyclopropanes and the application of the former as novel and stable 2-fluoroallyl electrophiles for Pd-catalyzed allylic substitution.
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Affiliation(s)
- Angelina Yu Bobrova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation. and Higher Chemical College of the Russian Academy of Sciences, D. I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya pl., 125047 Moscow, Russian Federation
| | - Maxim A Novikov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation.
| | - Yury V Tomilov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation.
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37
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Zhang J, Yang JD, Cheng JP. Chemoselective catalytic hydrodefluorination of trifluoromethylalkenes towards mono-/gem-di-fluoroalkenes under metal-free conditions. Nat Commun 2021; 12:2835. [PMID: 33990577 PMCID: PMC8121801 DOI: 10.1038/s41467-021-23101-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/15/2021] [Indexed: 01/08/2023] Open
Abstract
Fluorine-containing moieties show significant effects in improving the properties of functional molecules. Consequently, efficient methods for installing them into target compounds are in great demand, especially those enabled by metal-free catalysis. Here we show a diazaphospholene-catalyzed hydrodefluorination of trifluoromethylalkenes to chemoselectively construct gem-difluoroalkenes and terminal monofluoroalkenes by simple adjustment of the reactant stoichiometry. This metal-free hydrodefluorination features mild reaction conditions, good group compatibility, and almost quantitative yields for both product types. Stoichiometric experiments indicated a stepwise mechanism: hydridic addition to fluoroalkenes and subsequent β-F elimination from hydrophosphination intermediates. Density functional theory calculations disclosed the origin of chemoselectivity, regioselectivity and stereoselectivity, suggesting an electron-donating effect of the alkene-terminal fluorine atom.
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Affiliation(s)
- Jingjing Zhang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China
| | - Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China.
| | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China.
- State Key Laboratory of Elemento-organic Chemistry, College of Chemistry, Nankai University, Tianjin, China.
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38
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Lv L, Li C. Palladium‐Catalyzed Defluorinative Alkylation of
gem
‐Difluorocyclopropanes: Switching Regioselectivity via Simple Hydrazones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102240] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Leiyang Lv
- Department of Chemistry Renmin University of China Beijing 100872 China
| | - Chao‐Jun Li
- Department of Chemistry and FRQNT Center for Green Chemistry and Catalysis McGill University 801 Sherbrooke Street West Montreal Quebec H3A 0B8 Canada
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39
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Lv L, Li C. Palladium‐Catalyzed Defluorinative Alkylation of
gem
‐Difluorocyclopropanes: Switching Regioselectivity via Simple Hydrazones. Angew Chem Int Ed Engl 2021; 60:13098-13104. [PMID: 33756022 DOI: 10.1002/anie.202102240] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/12/2021] [Indexed: 01/08/2023]
Affiliation(s)
- Leiyang Lv
- Department of Chemistry Renmin University of China Beijing 100872 China
| | - Chao‐Jun Li
- Department of Chemistry and FRQNT Center for Green Chemistry and Catalysis McGill University 801 Sherbrooke Street West Montreal Quebec H3A 0B8 Canada
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40
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Wu FP, Yuan Y, Liu J, Wu XF. Pd/Cu-Catalyzed Defluorinative Carbonylative Coupling of Aryl Iodides and gem-Difluoroalkenes: Efficient Synthesis of α-Fluorochalcones. Angew Chem Int Ed Engl 2021; 60:8818-8822. [PMID: 33538042 DOI: 10.1002/anie.202017365] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Indexed: 01/12/2023]
Abstract
An unprecedented and challenging defluorinative carbonylation was achieved. Enabled by a Pd/Cu cooperative catalyst system, the first example of defluorinative carbonylative coupling has been established. With gem-difluoroalkenes and aryl iodides as the substrates, this methodology offers flexible and facile access to privileged α-fluorochalcones under mild reaction conditions in moderate-to-excellent yields. Mechanistic studies indicated transmetalation between palladium and copper intermediates as a crucial step of the catalytic cycle.
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Affiliation(s)
- Fu-Peng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Yang Yuan
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Jiawang Liu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059, Rostock, Germany.,Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, Liaoning, China
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41
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Wang Y, Qi X, Ma Q, Liu P, Tsui GC. Stereoselective Palladium-Catalyzed Base-Free Suzuki–Miyaura Cross-Coupling of Tetrasubstituted gem-Difluoroalkenes: An Experimental and Computational Study. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05141] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yanhui Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR
| | - Xiaotian Qi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Qiao Ma
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Gavin Chit Tsui
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR
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42
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Guo YQ, Wu Y, Wang R, Song H, Liu Y, Wang Q. Photoredox/Hydrogen Atom Transfer Cocatalyzed C–H Difluoroallylation of Amides, Ethers, and Alkyl Aldehydes. Org Lett 2021; 23:2353-2358. [DOI: 10.1021/acs.orglett.1c00546] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuan-Qiang Guo
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yifan Wu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Ruiguo Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Hongjian Song
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People’s Republic of China
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43
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Wu F, Yuan Y, Liu J, Wu X. Pd/Cu‐Catalyzed Defluorinative Carbonylative Coupling of Aryl Iodides and
gem
‐Difluoroalkenes: Efficient Synthesis of α‐Fluorochalcones. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017365] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Fu‐Peng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Yang Yuan
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Jiawang Liu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao‐Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 116023 Dalian Liaoning China
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44
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Li Y, Li X, Li X, Shi D. Visible-light-promoted E-selective synthesis of α-fluoro-β-arylalkenyl sulfides via the deoxygenation/isomerization process. Chem Commun (Camb) 2021; 57:2152-2155. [PMID: 33523076 DOI: 10.1039/d0cc08254f] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Regioselective synthesis of α-fluoro-β-arylalkenyl sulfides has been established with gem-difluoroalkenes and sodium sulfinates in a transition-metal-free manner. A series of control experiments were executed to demonstrate thiol radicals and anions as the proposed intermediates. Notably, regioselective Z→E isomerization was achieved under green light irradiation in the absence of a photoinitiator.
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Affiliation(s)
- Yuxiu Li
- State Key Laboratory of Microbial Technology, and Marine Biotechnology Research Center, Shandong University, 72 Binhai Road, Qingdao 266237, Shandong, P. R. China.
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45
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Ponomarev SA, Larkovich RV, Aldoshin AS, Tabolin AA, Ioffe SL, Groß J, Opatz T, Nenajdenko VG. Diels-Alder reaction of β-fluoro-β-nitrostyrenes with cyclic dienes. Beilstein J Org Chem 2021; 17:283-292. [PMID: 33564337 PMCID: PMC7849230 DOI: 10.3762/bjoc.17.27] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/13/2021] [Indexed: 01/31/2023] Open
Abstract
The Diels–Alder reaction of β-fluoro-β-nitrostyrenes with cyclic 1,3-dienes was investigated. A series of novel monofluorinated norbornenes was prepared in up to 97% yield. The reaction with 1,3-cyclohexadiene permits the preparation of monofluorinated bicyclo[2.2.2]oct-2-enes. The kinetic data of the reactions with 1,3-cyclopentadiene and 1,3-cyclohexadiene were used to calculate activation parameters. Furthermore, the synthetic utility of the cycloadducts obtained was demonstrated.
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Affiliation(s)
- Savva A Ponomarev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
| | - Roman V Larkovich
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
| | - Alexander S Aldoshin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky prosp. 47, Moscow 119991, Russian Federation
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky prosp. 47, Moscow 119991, Russian Federation
| | - Jonathan Groß
- Department of Chemistry Johannes Gutenberg-University, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Till Opatz
- Department of Chemistry Johannes Gutenberg-University, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Valentine G Nenajdenko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1, Moscow, 119991, Russian Federation
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46
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Isoda M, Uetake Y, Takimoto T, Tsuda J, Hosoya T, Niwa T. Convergent Synthesis of Fluoroalkenes Using a Dual-Reactive Unit. J Org Chem 2021; 86:1622-1632. [PMID: 33400531 DOI: 10.1021/acs.joc.0c02474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Fluoroalkenes have shown importance as a metabolically stable isostere of amide compounds. To expedite the synthesis of diverse fluoroalkenes, we have developed a dual-reactive C2-unit, (Z)-1-boryl-1-fluoro-2-tosyloxyethene, containing nucleophilic and electrophilic moieties. Consecutive palladium-catalyzed cross-coupling reactions of this unit with aryl bromides and aryl boronic acids allow for the convergent synthesis of diverse trans-1,2-diaryl-substituted fluoroethenes in a chemoselective and stereoretentive manner.
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Affiliation(s)
- Motoyuki Isoda
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Yuta Uetake
- Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Tadashi Takimoto
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Junpei Tsuda
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Takamitsu Hosoya
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takashi Niwa
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan.,Chemical Biology Team, Division of Bio-Function Imaging, RIKEN Center for Life Science Technologies (CLST), 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
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47
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Li Z, Qiu X, Lou J, Wang Q. Progress in Visible-Light Catalyzed C—F Bond Functionalization of gem-Difluoroalkenes. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202106013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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48
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Zeng H, Cai Y, Jiang H, Zhu C. Two C(sp 3)-F Bond Activation in a CF 3 Group: ipso-Defluorinative Amination Triggered 1,3-Diamination of (Trifluoromethyl)alkenes with Indoles, Carbazoles, Pyrroles, and Sulfonamides. Org Lett 2021; 23:66-70. [PMID: 33321040 DOI: 10.1021/acs.orglett.0c03708] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A novel strategy enabled cleavage of two C(sp3)-F bonds in a CF3 group is reported. Triggered by ipso-defluorinative amination, this 1,3-diamination of (trifluoromethyl)alkenes with indoles, carbazoles, pyrroles, and sulfonamides gave acyclic 1,3-diamine products bearing a monofluoroalkene moiety in high yields with good to excellent Z/E selectivities. Preliminary mechanistic studies enable the isolation of the reaction intermediate and indicate that a unique sequential ipso-/γ-selective defluorinative amination pathway is involved in this transformation.
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Affiliation(s)
- 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
| | - 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
| | - 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
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49
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Du HW, Chen Y, Sun J, Gao QS, Wang H, Zhou MD. Synthesis of gem-Difluoroalkenes via Zn-Mediated Decarboxylative/Defluorinative Cross-Coupling. Org Lett 2020; 22:9342-9345. [DOI: 10.1021/acs.orglett.0c03554] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hai-Wu Du
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Yang Chen
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Jing Sun
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Qi-Sheng Gao
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - He Wang
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
| | - Ming-Dong Zhou
- School of Chemistry and Materials Science, Liaoning Shihua University, Fushun 113001, P. R. China
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50
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Fujimoto H, Kodama T, Yamanaka M, Tobisu M. Phosphine-Catalyzed Intermolecular Acylfluorination of Alkynes via a P(V) Intermediate. J Am Chem Soc 2020; 142:17323-17328. [DOI: 10.1021/jacs.0c08928] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hayato Fujimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Takuya Kodama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Yamanaka
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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