1
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Yang H, Wang S, Wang J, Xu X, Li X. Gold catalyzed hydrofluorination of propargyl alcohols promoted by fluorine-hydrogen bonding. Chem Commun (Camb) 2023. [PMID: 37401374 DOI: 10.1039/d3cc02275g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
The hydroxyl group was discovered to promote gold catalyzed hydrofluorination of alkynes via hydrogen bonding interaction. Based on this strategy, propargyl alcohols could be hydrofluorinated smoothly using Et3N·3HF under acidic additive-free conditions, which provided a straightforward alternative protocol for the synthesis of 3-fluoroallyl alcohols.
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Affiliation(s)
- Hui Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | - Shaowen Wang
- 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.
| | - Xiangsheng Xu
- 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.
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2
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3
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He Y, Tian L, Chang X, Qu Z, Huang Y, Huang C, Sun Q, Wang H. Rhodium-catalyzed formal [4 + 3] annulation reaction of N-methoxybenzamides with gem-difluorocyclopropenes: A combination of experimental and theoretical studies. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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4
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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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5
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Wang J, Gao H, Shi C, Chen G, Tan X, Chen X, Xu L, Cai X, Huang B, Li H. Recent advances in radical-based C-F bond activation of polyfluoroarenes and gem-difluoroalkenes. Chem Commun (Camb) 2021; 57:12203-12217. [PMID: 34714301 DOI: 10.1039/d1cc04189d] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The direct employment of polyfluoroarenes and gem-difluoroalkenes as building blocks is regarded as one of the most effective and straightforward strategies for the introduction of fluorine-containing moieties into organic skeletons. Accordingly, radical chemistry has gradually become a mild and powerful method for the activation of their C-F bonds. The radical-based transformations of polyfluoroarenes and gem-difluoroalkenes can be primarily categorized into three types based on the specific intermediates involved: (1) multifluoroaryl radical anions, (2) monofluoroalkenyl radicals and (3) other radicals. Compared with the more established multifluoroaryl radical anion pathway, the monofluoroalkenyl radical-involved cross-coupling reaction can proceed through C-radical cross-coupling, radical addition/elimination or the hydrogen atom transfer process. For the presented examples in this review, the typical reaction modes, substrate scope, radical-involved mechanisms, and late-stage applications in the modification of bioactive molecules are discussed, aiming to provide a comprehensive overview of the recent advances of the radical-based transformations of polyfluoroarenes and gem-difluoroalkenes.
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Affiliation(s)
- Junlei Wang
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Han Gao
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Chengcheng Shi
- State Key Lab of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Guiling Chen
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Xia Tan
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Xuemei Chen
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Lei Xu
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Xiaodong Cai
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
| | - Binbin Huang
- College of Education for the Future, Beijing Normal University at Zhuhai, Zhuhai 519087, China.
| | - Hongqing Li
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550000, China.
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6
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Xue Z, Li Q, Zhang J, Tang Y. Unified Biomimetic Approach to (+)-Hippolachnin A: In-Depth Insights into Its Biosynthetic Origin. Org Lett 2021; 23:8783-8788. [PMID: 34723550 DOI: 10.1021/acs.orglett.1c03280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A formal biomimetic synthesis of (+)-hippolachnin A has been achieved under the guidance of its plausible biosynthetic pathway. Pivotal transformations include an intriguing 1O2-mediated [4 + 2] cycloaddition and a tandem Kornblum-DeLaMare rearrangement/hemiketalization/dehydration reaction. The current work not only offers a unified approach to access skeletally diverse plakortin-type polyketides but also provides convincing evidence to elucidate their underlying biosynthetic network.
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Affiliation(s)
- Zhengwen Xue
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Qingong Li
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
- Shandong NHU Pharmaceutical Co., Ltd., No. 01999 Xiangjiang West Second Street, Binhai Economic and Technological Development Zone, Weifang 261108, Shandong Province, China
| | - Jingyang Zhang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Yefeng Tang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
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7
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Yang RY, Xu B. Chemo-, regio- and stereoselective synthesis of monofluoroalkenes via a tandem fluorination-desulfonation sequence. Chem Commun (Camb) 2021; 57:7802-7805. [PMID: 34268540 DOI: 10.1039/d1cc03207k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A widely applicable approach for the synthesis of Z-monofluoroalkenes from readily available alkyl triflones and NFSI has been reported. The reaction proceeded under mild conditions, affording mono-fluorinated alkenes in good to excellent yields with excellent chemo- regio- and stereoselectivity. The mechanism may involve electrophilic fluorination of triflones followed by the highly stereoselective concerted bimolecular elimination (E2) of CF3SO2H.
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Affiliation(s)
- Ren-Yin Yang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, P. R. China.
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, P. R. China.
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8
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Li C, Cao YX, Jin RX, Bian KJ, Qin ZY, Lan Q, Wang XS. Highly stereoselective nickel-catalyzed difluoroalkylation of aryl ketones to tetrasubstituted monofluoroalkenes and quaternary alkyl difluorides. Chem Sci 2019; 10:9285-9291. [PMID: 32055314 PMCID: PMC7003883 DOI: 10.1039/c9sc02806d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 08/17/2019] [Indexed: 12/19/2022] Open
Abstract
A nickel-catalyzed difluoroalkylation of α-C-H bonds of aryl ketones to furnish highly stereo-defined tetrasubstituted monofluoroalkenes or quaternary alkyl difluorides from secondary or tertiary ketones, respectively, has been established. Mechanistic investigations indicated that these C-H fluoroalkylations proceed via a Ni(i)/Ni(iii) catalytic cycle. An obvious fluorine effect was observed in the reaction, and this reaction has demonstrated high stereoselectivity, mild conditions, and broad substrate scopes, thus enabling the late-stage fluoroalkylation of bioactive molecules. This method offers a solution for expedient construction of monofluoroalkenes from readily available materials, and provides an efficient approach for the synthesis of bioactive fluorinated compounds for the discovery of lead compounds in medicinal chemistry.
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Affiliation(s)
- Chao Li
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Yi-Xuan Cao
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Ruo-Xing Jin
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Kang-Jie Bian
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Zi-Yang Qin
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Quan Lan
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
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9
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Jayaraman A, Lee S. Selective Mono- and Dialkynylation of 1-Fluoro-2,2-diiodovinylarenes Using Pd-Catalyzed Decarboxylative Coupling Reactions. Org Lett 2019; 21:7923-7927. [DOI: 10.1021/acs.orglett.9b02907] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aravindan Jayaraman
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
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10
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Tian H, Xia Q, Wang Q, Dong J, Liu Y, Wang Q. Direct α-Monofluoroalkenylation of Heteroatomic Alkanes via a Combination of Photoredox Catalysis and Hydrogen-Atom-Transfer Catalysis. Org Lett 2019; 21:4585-4589. [DOI: 10.1021/acs.orglett.9b01491] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hao Tian
- 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
| | - Qing Xia
- 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
| | - Qiang 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
| | - Jianyang Dong
- 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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11
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Ballari MS, Herrera Cano N, Wunderlin DA, Feresin GE, Santiago AN. One-pot sequential synthesis and antifungal activity of 2-(benzylsulfonyl)benzothiazole derivatives. RSC Adv 2019. [DOI: 10.1039/c9ra04488d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New antifungal agrochemicals, derived from 2-(benzylsulfonyl)benzothiazole were synthesized by an environmentally friendly method, using water as reaction medium.
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Affiliation(s)
- María Sol Ballari
- INFIQC
- CONICET
- Universidad Nacional de Córdoba
- Facultad de Ciencias Químicas
- Departamento Química Orgánica
| | - Natividad Herrera Cano
- Instituto de Biotecnología
- Universidad Nacional de San Juan
- CONICET–CCT San Juan
- San Juan
- Argentina
| | - Daniel A. Wunderlin
- ICYTAC
- CONICET
- Universidad Nacional de Córdoba
- Facultad de Ciencias Químicas
- Departamento Química Orgánica
| | - Gabriela E. Feresin
- Instituto de Biotecnología
- Universidad Nacional de San Juan
- CONICET–CCT San Juan
- San Juan
- Argentina
| | - Ana N. Santiago
- INFIQC
- CONICET
- Universidad Nacional de Córdoba
- Facultad de Ciencias Químicas
- Departamento Química Orgánica
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12
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Li N, Chang J, Kong L, Li X. Ruthenium(ii)-catalyzed α-fluoroalkenylation of arenes via C–H bond activation and C–F bond cleavage. Org Chem Front 2018. [DOI: 10.1039/c8qo00297e] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2-Diaryl-substituted monofluoroalkenes with good regio-and stereo-selectivities were achieved through C–H activation by a Ru(ii)-catalyst.
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Affiliation(s)
- Na Li
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang 453007
- China
| | - Junbiao Chang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang 453007
- China
| | - Lingheng Kong
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xingwei Li
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang 453007
- China
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13
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McCune CD, Beio ML, Sturdivant JM, de la Salud-Bea R, Darnell BM, Berkowitz DB. Synthesis and Deployment of an Elusive Fluorovinyl Cation Equivalent: Access to Quaternary α-(1'-Fluoro)vinyl Amino Acids as Potential PLP Enzyme Inactivators. J Am Chem Soc 2017; 139:14077-14089. [PMID: 28906111 PMCID: PMC6052324 DOI: 10.1021/jacs.7b04690] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Developing specific chemical functionalities to deploy in biological environments for targeted enzyme inactivation lies at the heart of mechanism-based inhibitor development but also is central to other protein-tagging methods in modern chemical biology including activity-based protein profiling and proteolysis-targeting chimeras. We describe here a previously unknown class of potential PLP enzyme inactivators; namely, a family of quaternary, α-(1'-fluoro)vinyl amino acids, bearing the side chains of the cognate amino acids. These are obtained by the capture of suitably protected amino acid enolates with β,β-difluorovinyl phenyl sulfone, a new (1'-fluoro)vinyl cation equivalent, and an electrophile that previously eluded synthesis, capture and characterization. A significant variety of biologically relevant AA side chains are tolerated including those for alanine, valine, leucine, methionine, lysine, phenylalanine, tyrosine, and tryptophan. Following addition/elimination, the resulting transoid α-(1'-fluoro)-β-(phenylsulfonyl)vinyl AA-esters undergo smooth sulfone-stannane interchange to stereoselectively give the corresponding transoid α-(1'-fluoro)-β-(tributylstannyl)vinyl AA-esters. Protodestannylation and global deprotection then yield these sterically encumbered and densely functionalized quaternary amino acids. The α-(1'-fluoro)vinyl trigger, a potential allene-generating functionality originally proposed by Abeles, is now available in a quaternary AA context for the first time. In an initial test of this new inhibitor class, α-(1'-fluoro)vinyllysine is seen to act as a time-dependent, irreversible inactivator of lysine decarboxylase from Hafnia alvei. The enantiomers of the inhibitor could be resolved, and each is seen to give time-dependent inactivation with this enzyme. Kitz-Wilson analysis reveals similar inactivation parameters for the two antipodes, L-α-(1'-fluoro)vinyllysine (Ki = 630 ± 20 μM; t1/2 = 2.8 min) and D-α-(1'-fluoro)vinyllysine (Ki = 470 ± 30 μM; t1/2 = 3.6 min). The stage is now set for exploration of the efficacy of this trigger in other PLP-enzyme active sites.
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Affiliation(s)
| | | | | | | | - Brendan M. Darnell
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588-0304
| | - David B. Berkowitz
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588-0304
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14
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Varun BV, Prabhu KR. Sulfur Assisted Tandem Electrophilic Fluorinative Deacylation: Synthesis of α-Fluoro β-Ketosulfides. J Org Chem 2017; 82:9525-9536. [DOI: 10.1021/acs.joc.7b01547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Begur Vasanthkumar Varun
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Kandikere Ramaiah Prabhu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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15
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Štacko P, Kistemaker JCM, Feringa BL. Fluorine-Substituted Molecular Motors with a Quaternary Stereogenic Center. Chemistry 2017; 23:6643-6653. [DOI: 10.1002/chem.201700581] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Peter Štacko
- Centre for Systems Chemistry, Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Jos C. M. Kistemaker
- Centre for Systems Chemistry, Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Ben L. Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry; University of Groningen; Nijenborgh 4 9747 AG Groningen The Netherlands
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16
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Kong L, Liu B, Zhou X, Wang F, Li X. Rhodium(iii)-catalyzed regio- and stereoselective benzylic α-fluoroalkenylation with gem-difluorostyrenes. Chem Commun (Camb) 2017; 53:10326-10329. [DOI: 10.1039/c7cc06048c] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Rh(iii)-Catalyzed fluoroalkenylation of a benzylic C–H bond has been realized under mild conditions with high regio- and stereoselectivity.
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Affiliation(s)
- Lingheng Kong
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Bingxian Liu
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang 453007
- China
| | - Xukai Zhou
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Fen Wang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xingwei Li
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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17
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Cai SH, Ye L, Wang DX, Wang YQ, Lai LJ, Zhu C, Feng C, Loh TP. Manganese-catalyzed synthesis of monofluoroalkenes via C–H activation and C–F cleavage. Chem Commun (Camb) 2017; 53:8731-8734. [DOI: 10.1039/c7cc04131d] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A redox-neutral manganese-catalyzed α-fluoroalkenylation of arenes via C–H activation and C–F cleavage has been described.
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Affiliation(s)
- Sai-Hu Cai
- Institute of Advanced Synthesis (IAS)
- College of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing 211800
| | - Lu Ye
- Institute of Advanced Synthesis (IAS)
- College of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing 211800
| | - Ding-Xing Wang
- Institute of Advanced Synthesis (IAS)
- College of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing 211800
| | - Yi-Qiu Wang
- Institute of Advanced Synthesis (IAS)
- College of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing 211800
| | - Lin-Jie Lai
- Institute of Advanced Synthesis (IAS)
- College of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing 211800
| | - Chuan Zhu
- Institute of Advanced Synthesis (IAS)
- College of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing 211800
| | - Chao Feng
- Institute of Advanced Synthesis (IAS)
- College of Chemistry and Molecular Engineering
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing 211800
| | - Teck-Peng Loh
- Department of Chemistry
- University of Science and Technology of China (USTC)
- Hefei
- P. R. China
- Division of Chemistry and Biological Chemistry
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18
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Kong L, Zhou X, Li X. Cobalt(III)-Catalyzed Regio- and Stereoselective α-Fluoroalkenylation of Arenes with gem-Difluorostyrenes. Org Lett 2016; 18:6320-6323. [DOI: 10.1021/acs.orglett.6b03203] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Lingheng Kong
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xukai Zhou
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xingwei Li
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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19
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Le Guen C, Tran Do ML, Chardon A, Lebargy C, Lohier JF, Pfund E, Lequeux T. Access to Fluoropyrrolidines by Intramolecular Aza-Michael Addition Reaction. J Org Chem 2016; 81:6714-20. [DOI: 10.1021/acs.joc.6b01363] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Clothilde Le Guen
- Normandie University, LCMT, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
| | - Minh-Loan Tran Do
- Normandie University, LCMT, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
| | - Aurélien Chardon
- Normandie University, LCMT, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
| | - Cyril Lebargy
- Normandie University, LCMT, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
| | | | - Emmanuel Pfund
- Normandie University, LCMT, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
| | - Thierry Lequeux
- Normandie University, LCMT, ENSICAEN, UNICAEN, CNRS, 14000 Caen, France
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20
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Banerjee S, Sinha S, Pradhan P, Caruso A, Liebowitz D, Parrish D, Rossi M, Zajc B. Regiospecifically Fluorinated Polycyclic Aromatic Hydrocarbons via Julia-Kocienski Olefination and Oxidative Photocyclization. Effect of Fluorine Atom Substitution on Molecular Shape. J Org Chem 2016; 81:3983-93. [PMID: 27009471 PMCID: PMC4874880 DOI: 10.1021/acs.joc.5b02580] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A modular synthesis of regiospecifically fluorinated polycyclic aromatic hydrocarbons (PAHs) is described. 1,2-Diarylfluoroalkenes, synthesized via Julia-Kocienski olefination (70-99% yields), were converted to isomeric 5- and 6-fluorobenzo[c]phenanthrene, 5-and 6-fluorochrysene, and 9- and 10-benzo[g]chrysene (66-83% yields) by oxidative photocyclization. Photocyclization to 6-fluorochrysene proceeded more slowly than conversion of 1-styrylnaphthalene to chrysene. Higher fluoroalkene dilution led to a more rapid cyclization. Therefore, photocyclizations were performed at higher dilutions. To evaluate the effect of fluorine atom on molecular shapes, X-ray data for 5- and 6-fluorobenzo[c]phenanthrene, 6-fluorochrysene, 9- and 10-fluorobenzo[g]chrysene, and unfluorinated chrysene as well as benzo[g]chrysene were obtained and compared. The fluorine atom caused a small deviation from planarity in the chrysene series and decreased nonplanarity in the benzo[c]phenanthrene derivatives, but its influence was most pronounced in the benzo[g]chrysene series. A remarkable flattening of the molecule was observed in 9-fluorobenzo[g]chrysene, where the short 2.055 Å interatomic distance between bay-region F-9 and H-8, downfield shift of H-8, and a 26.1 Hz coupling between F-9 and C-8 indicate a possible F-9···H-8 hydrogen bond. In addition, in 9-fluorobenzo[g]chrysene, the stacking distance is short at 3.365 Å and there is an additional interaction between the C-11-H and C-10a of a nearby molecule that is almost perpendicular.
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Affiliation(s)
- Shaibal Banerjee
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
| | - Saikat Sinha
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
| | - Padmanava Pradhan
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
| | - Alessio Caruso
- Department of Chemistry, Vassar College, Poughkeepsie, New
York 12604, United States
| | - Daniel Liebowitz
- Department of Chemistry, Vassar College, Poughkeepsie, New
York 12604, United States
| | - Damon Parrish
- Naval Research Laboratory, Code 6030, 4555 Overlook Avenue,
Washington D.C. 20375, United States
| | - Miriam Rossi
- Department of Chemistry, Vassar College, Poughkeepsie, New
York 12604, United States
| | - Barbara Zajc
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
- The Ph.D. Program in Chemistry, The Graduate Center of The
City University of New York, New York, New York 10016, United States
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21
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Gao B, Hu J, Zhao Y, Hu J. Carbonyl olefination of diaryl ketones with heteroaryl sulfoxides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Rhodium-catalysed C(sp(2))-C(sp(2)) bond formation via C-H/C-F activation. Nat Commun 2015; 6:7472. [PMID: 26081837 PMCID: PMC4557390 DOI: 10.1038/ncomms8472] [Citation(s) in RCA: 187] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 05/13/2015] [Indexed: 12/23/2022] Open
Abstract
Fluoroalkenes represent a class of privileged structural motifs, which found widespread use in medicinal chemistry. However, the synthetic access to fluoroalkenes was much underdeveloped with previous reported methods suffering from either low step economy or harsh reaction conditions. Here we present a RhIII-catalysed tandem C–H/C–F activation for the synthesis of (hetero)arylated monofluoroalkenes. The use of readily available gem-difluoroalkenes as electrophiles provides a highly efficient and operationally simple method for the introduction of α-fluoroalkenyl motifs onto (hetero)arenes under oxidant-free conditions. Furthermore, the employment of alcoholic solvent and the in-situ generated hydrogen fluoride are found to be beneficial in this transformation, indicating the possibility of the involvement of hydrogen bond activation mode with regards to the C–F bond cleavage step. Fluoroalkenes are found widely in biologically active compounds, but their introduction can be difficult or laborious. Here, the authors report a C–H/C–F activation strategy to introduce monofluoroalkenes into organic molecules in one step with good to excellent yields.
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Champagne PA, Desroches J, Hamel JD, Vandamme M, Paquin JF. Monofluorination of Organic Compounds: 10 Years of Innovation. Chem Rev 2015; 115:9073-174. [PMID: 25854146 DOI: 10.1021/cr500706a] [Citation(s) in RCA: 674] [Impact Index Per Article: 74.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pier Alexandre Champagne
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Justine Desroches
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Jean-Denys Hamel
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Mathilde Vandamme
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
| | - Jean-François Paquin
- Canada Research Chair in Organic and Medicinal Chemistry, CGCC, PROTEO, Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (QC), Canada G1V 0A6
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24
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Zhao Y, Jiang F, Hu J. Spontaneous Resolution of Julia-Kocienski Intermediates Facilitates Phase Separation to Produce Z- and E-Monofluoroalkenes. J Am Chem Soc 2015; 137:5199-203. [DOI: 10.1021/jacs.5b02112] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yanchuan Zhao
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Fanzhou Jiang
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
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25
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Su YM, Feng GS, Wang ZY, Lan Q, Wang XS. Nickel-Catalyzed Monofluoromethylation of Aryl Boronic Acids. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412026] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Su YM, Feng GS, Wang ZY, Lan Q, Wang XS. Nickel-catalyzed monofluoromethylation of aryl boronic acids. Angew Chem Int Ed Engl 2015; 54:6003-7. [PMID: 25809786 DOI: 10.1002/anie.201412026] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 02/16/2014] [Indexed: 11/12/2022]
Abstract
Aryl boronic acids can be monofluoromethylated under nickel catalysis. The utility of this method is demonstrated by the monofluoromethylation of a borylated and acyl-protected derivative of the statin drug ezetimibe. Mechanistic investigations indicate that a fluoromethyl radical is involved in the Ni(I)/Ni(III) catalytic cycle.
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Affiliation(s)
- Yi-Ming Su
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026 (China)
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Ni C, Hu M, Hu J. Good partnership between sulfur and fluorine: sulfur-based fluorination and fluoroalkylation reagents for organic synthesis. Chem Rev 2014; 115:765-825. [PMID: 25144886 DOI: 10.1021/cr5002386] [Citation(s) in RCA: 928] [Impact Index Per Article: 92.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai City, Shanghai 200032, China
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28
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Synthesis of regiospecifically fluorinated conjugated dienamides. Molecules 2014; 19:4418-32. [PMID: 24727415 PMCID: PMC4440806 DOI: 10.3390/molecules19044418] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 03/22/2014] [Accepted: 03/31/2014] [Indexed: 11/17/2022] Open
Abstract
Modular synthesis of regiospecifically fluorinated 2,4-diene Weinreb amides, with defined stereochemistry at both double bonds, was achieved via two sequential Julia-Kocienski olefinations. In the first step, a Z-α-fluorovinyl Weinreb amide unit with a benzothiazolylsulfanyl substituent at the allylic position was assembled. This was achieved via condensation of two primary building blocks, namely 2-(benzo[d]thiazol-2-ylsulfonyl)-2-fluoro-N-methoxy-N-methylacetamide (a Julia-Kocienski olefination reagent) and 2-(benzo[d]thiazol-2-ylthio)acetaldehyde (a bifunctional building block). This condensation was highly Z-selective and proceeded in a good 76% yield. Oxidation of benzothiazolylsulfanyl moiety furnished a second-generation Julia-Kocienski olefination reagent, which was used for the introduction of the second olefinic linkage via DBU-mediated condensations with aldehydes, to give (2Z,4E/Z)-dienamides in 50%–74% yield. Although olefinations were 4Z-selective, (2Z,4E/Z)-2-fluoro-2,4-dienamides could be readily isomerized to the corresponding 5-substituted (2Z,4E)-2-fluoro-N-methoxy-N-methylpenta-2,4-dienamides in the presence of catalytic iodine.
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Jiang F, Zhao Y, Hu J. Selective monofluorination of active methylene compounds: the important role of ZnCl2 in inhibiting overfluorination. Org Chem Front 2014. [DOI: 10.1039/c4qo00090k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ZnCl2 effectively facilitates selective monofluorination of methylene compounds by inhibiting the undesired overfluorination.
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Affiliation(s)
- Fanzhou Jiang
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Yanchuan Zhao
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032, China
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Cao CR, Ou S, Jiang M, Liu JT. A practical route for the highly stereoselective synthesis of tetrasubstituted fluoroalkenes. Org Biomol Chem 2013; 12:467-73. [PMID: 24270666 DOI: 10.1039/c3ob42093k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of tetrasubstituted fluoroalkene derivatives were synthesized by the reaction of α-fluoro-β-carbonyl benzothiazol-2-yl sulfones with various nucleophiles in good yields with high stereoselectivities. The predominant cis configuration of fluorine and alkynyl groups was observed. A single isomer was obtained when a ketone, acetate or amide was used as the substrate in the presence of a base.
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Affiliation(s)
- Chun-Ru Cao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Road, Shanghai 200032, China.
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31
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Hafner A, Fischer TS, Bräse S. Synthesis of CF3-Substituted Olefins by Julia-Kocienski Olefination Using 2-[(2,2,2-Trifluoroethyl)sulfonyl]benzo[d]thiazole as Trifluoromethylation Agent. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301070] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Prunier A, Calata C, Legros J, Maddaluno J, Pfund E, Lequeux T. Aza-Michael Access to Fluoroalkylidene Analogues of Biomolecules. J Org Chem 2013; 78:8083-97. [DOI: 10.1021/jo401356j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anaïs Prunier
- Laboratoire de Chimie Moléculaire et Thioorganique, CNRS UMR 6507 & FR3038, Normandie Université, UNICAEN, ENSICAEN, 6 Boulevard du Maréchal Juin, 14050 Caen Cedex, France
| | - Charlène Calata
- Laboratoire de Chimie Moléculaire et Thioorganique, CNRS UMR 6507 & FR3038, Normandie Université, UNICAEN, ENSICAEN, 6 Boulevard du Maréchal Juin, 14050 Caen Cedex, France
| | - Julien Legros
- COBRA UMR 6014 CNRS & FR3038, INSA et Université de Rouen, 1 rue Tesnière, 76821 Mont Saint Aignan, France
| | - Jacques Maddaluno
- COBRA UMR 6014 CNRS & FR3038, INSA et Université de Rouen, 1 rue Tesnière, 76821 Mont Saint Aignan, France
| | - Emmanuel Pfund
- Laboratoire de Chimie Moléculaire et Thioorganique, CNRS UMR 6507 & FR3038, Normandie Université, UNICAEN, ENSICAEN, 6 Boulevard du Maréchal Juin, 14050 Caen Cedex, France
| | - Thierry Lequeux
- Laboratoire de Chimie Moléculaire et Thioorganique, CNRS UMR 6507 & FR3038, Normandie Université, UNICAEN, ENSICAEN, 6 Boulevard du Maréchal Juin, 14050 Caen Cedex, France
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33
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Habib S, Larnaud F, Pfund E, Lequeux T, Fenet B, Goekjian PG, Gueyrard D. Synthesis of Fluorinatedexo-Glycals through Modified Julia Olefination. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201719] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Yang J, Yin W, Liu R, Chu C. Ti(Oi-Pr)4Mediated Olefination between Julia Reagent and Aldehydes under Mild Conditions: Facile Synthesis of Vinyl Sulfones. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201200466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Abstract
Recent developments in the stereoselective synthesis of fluoroalkenes, which include hydrofluorination of alkyne, fluorination of alkenylmetal, condensation methods, dehydrofluorination of gem-difluoro compounds, and a cross-coupling reaction using fluorohaloalkenes or fluoroalkenylmetal, are described in this chapter.
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36
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Abstract
Metalation-electrophilic fluorination of TMS- and TIPS-protected 1,3-benzothiazol-2-yl (BT) propargyl sulfones gave corresponding BT fluoropropargyl sulfones, Julia-Kocienski reagents for the synthesis of fluoro enynes. Both reagents reacted with aldehydes under mild DBU- or LHMDS-mediated conditions, giving high yields of conjugated fluoro enynes with E-stereoselectivity. In comparison to DBU-mediated reactions, stereoselectivity was higher in low-temperature LHMDS-mediated reactions. Two ketones were shown to react as well, using LHMDS as base. In situ removal of the TMS group gave terminal conjugated 2-fluoro 1,3-enynes. Synthetic utility of the fluoro enynes was demonstrated by conversion to internal alkynes and to stereoisomeric fluoro dienes via Sonogashira and Heck couplings.
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Affiliation(s)
- Rakesh Kumar
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
| | - Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
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37
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Abstract
A mild and efficient synthesis of 1-aryl-1-fluoroethenes from benzothiazolyl (aryl)fluoromethyl sulfones and paraformaldehyde, under DBU- or Cs(2)CO(3)-mediated conditions at room temperature, is described. A comparable diethyl fluoro(naphthalen-2-yl)methylphosphonate reagent does not react with paraformaldehyde under these mild conditions. The utility of the methodology for synthesis of terminal α-fluoroalkenes bearing electron-withdrawing functionalities is also shown.
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Affiliation(s)
- Samir K. Mandal
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Arun K. Ghosh
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Rakesh Kumar
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
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38
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Larnaud F, Pfund E, Linclau B, Lequeux T. Decarboxylation of fluorosulfones for the preparation fluoroalkylidene precursors. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2011.03.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Arisawa M, Toriyama F, Yamaguchi M. Rhodium-catalyzed phenylthiolation reaction of heteroaromatic compounds using α-(phenylthio)isobutyrophenone. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.077] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Kumar R, Pradhan P, Zajc B. Facile synthesis of 4-vinyl- and 4-fluorovinyl-1,2,3-triazoles via bifunctional "click-olefination" reagents. Chem Commun (Camb) 2011; 47:3891-3. [PMID: 21336351 DOI: 10.1039/c0cc05083k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modular synthesis of vinyl and fluorovinyl triazoles can be achieved from bifunctional propargyl and fluoropropargyl sulfones by Cu-catalyzed azide-alkyne ligation and Julia-Kocienski olefination. Competitive click reactions of the protio and fluoropropargyl sulfones show higher reactivity of the latter, and a preliminary DFT analysis was performed.
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Affiliation(s)
- Rakesh Kumar
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, USA
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42
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Kumar A, Sharma S, Tripathi VD, Srivastava S. Synthesis of chalcones and flavanones using Julia–Kocienski olefination. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.09.089] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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43
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Zhu L, Ni C, Zhao Y, Hu J. 1-tert-Butyl-1H-tetrazol-5-yl fluoromethyl sulfone (TBTSO2CH2F): a versatile fluoromethylidene synthon and its use in the synthesis of monofluorinated alkenes via Julia–Kocienski olefination. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.04.113] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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44
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Zhao Y, Huang W, Zhu L, Hu J. Difluoromethyl 2-Pyridyl Sulfone: A New gem-Difluoroolefination Reagent for Aldehydes and Ketones. Org Lett 2010; 12:1444-7. [DOI: 10.1021/ol100090r] [Citation(s) in RCA: 188] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanchuan Zhao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Weizhou Huang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Lingui Zhu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
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45
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Abstract
The Julia-Kocienski olefination provides a versatile platform for the synthesis of fluorovinyl compounds. This review describes our efforts as well as those of others in the synthesis of various fluorinated aryl and heteroaryl sulfones and their utility as olefination reagents for the modular assembly of fluoroalkenes. Where data is available, the influence of the fluorine atom on the reactivity of the olefination reagents and the stereochemical outcome of the olefination are described.
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Affiliation(s)
- Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
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46
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Zhang W, Huang W, Hu J. Highly Stereoselective Synthesis of Monofluoroalkenes from α-Fluorosulfoximines and Nitrones. Angew Chem Int Ed Engl 2009; 48:9858-61. [DOI: 10.1002/anie.200905077] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Zhang W, Huang W, Hu J. Highly Stereoselective Synthesis of Monofluoroalkenes from α-Fluorosulfoximines and Nitrones. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200905077] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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Ghosh AK, Zajc B. Fluorinated 1-phenyl-1H-tetrazol-5-yl sulfone derivatives as general reagents for fluoroalkylidene synthesis. J Org Chem 2009; 74:8531-40. [PMID: 19831343 PMCID: PMC3045538 DOI: 10.1021/jo901313k] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Julia-Kocienski olefination reagents 1-fluoropropyl, (cyclopropyl)fluoromethyl, 1-fluoro-2-methyl-2-propenyl, and 1-fluoro-5-hexenyl 1-phenyl-1H-tetrazol-5-yl (PT) sulfones were prepared by metalation followed by electrophilic fluorination. Although metalation-fluorination of n-propyl, 5-hexenyl, and (cyclopropyl)methyl PT-sulfones proceeded under homogeneous conditions, fluorination of 2-methyl-2-propenyl PT-sulfone required heterogeneous fluorination conditions. Condensation reactions of fluoro PT-sulfones with aldehydes resulted in fluoroalkylidenes in high yields. Screening of olefination conditions showed that stereoselectivity depended on reagent and carbonyl structure and can in many cases be tuned either toward E- or Z-selectivity. For example, LHMDS-mediated condensations of 1-fluoropropyl PT-sulfone in the presence of MgBr(2) x OEt(2) were Z-selective with electron-rich aromatic aldehydes, a hindered aromatic aldehyde, and cinnamaldehyde. Low-temperature KHMDS-mediated condensations were E-selective with electron-rich and electron-deficient aromatic aldehydes and Z-selective with n-octanal. Dialkyl, aryl alkyl, and diaryl ketones reacted as well to give fluoro olefin products in 71-99% yields.
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Affiliation(s)
- Arun K. Ghosh
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
| | - Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
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49
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Calata C, Pfund E, Lequeux T. Toward the Synthesis of Benzothiazolyl Fluoroaminosulfones. J Org Chem 2009; 74:9399-405. [DOI: 10.1021/jo901540c] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Charlène Calata
- Laboratoire de Chimie Moléculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN Université de Caen Basse-Normandie, 6 Bd du Maréchal Juin 14050 Caen Cedex, France
| | - Emmanuel Pfund
- Laboratoire de Chimie Moléculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN Université de Caen Basse-Normandie, 6 Bd du Maréchal Juin 14050 Caen Cedex, France
| | - Thierry Lequeux
- Laboratoire de Chimie Moléculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN Université de Caen Basse-Normandie, 6 Bd du Maréchal Juin 14050 Caen Cedex, France
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Murru S, Mondal P, Yella R, Patel BK. Copper(I)-Catalyzed Cascade Synthesis of 2-Substituted 1,3-Benzothiazoles: Direct Access to Benzothiazolones. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900711] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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