1
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Zhu F, Li Z, Wu XF. Nickel-Catalyzed Aminofluoroalkylative Cyclization of Styrenes with Ethyl Fluoroacetate and Anilines toward Fluoro-γ-Lactams. Org Lett 2023; 25:8535-8539. [PMID: 37985463 DOI: 10.1021/acs.orglett.3c03589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
A novel method for the nickel-catalyzed multicomponent aminofluoroalkylation/cyclization of styrenes with ethyl fluoroacetate and anilines has been developed. This protocol provides general and efficient access to a diverse range of fluoro-γ-lactams from simple and readily available starting materials. Control experiments prove the involvement of radical intermediates and excluded the presence of 2-fluoro-N-phenylacetamide.
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Affiliation(s)
- Fengxiang Zhu
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Ziyan Li
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
| | - Xiao-Feng Wu
- Institution Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- Leibniz-Institut für Katalyse e.V., Rostock 18059, Germany
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2
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Zhang Y, Jiang B, Liu P, Liu X. Et 2Zn-Mediated Radical (3 + 2) Cycloaddition of Vinyl Azides with Ethyl Iododifluoroacetate to Access 3,3-Difluoro-γ-lactams. J Org Chem 2023; 88:14634-14639. [PMID: 37788008 DOI: 10.1021/acs.joc.3c01620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
A diethylzinc-mediated radical (3 + 2) cycloaddition of vinyl azides with ethyl iododifluoroacetate is presented. The developed reaction features good functional group tolerance, broad substrate scope, and operational simplicity, enabling efficient assembly of a wide range of 3,3-difluoro-γ-lactam derivatives bearing an O-substituted quaternary carbon center in moderate to good yields. The utility of the method is showcased by a scaled-up reaction, conversion of the product, and late-stage structural modifications of a variety of pharmaceutical compounds.
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Affiliation(s)
- Yifei Zhang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
| | - Bin Jiang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
| | - Peijun Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, P. R. China
| | - Xiaozu Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563000, P. R. China
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3
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Ye H, Zhou L, Chen Y, Tong H. Visible light driven multicomponent synthesis of difluoroamidosulfonyl quinoline derivatives. Org Biomol Chem 2023; 21:846-850. [PMID: 36602158 DOI: 10.1039/d2ob02069f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A visible-light-induced photocatalyst-free three-component radical tandem cyclization of N-propargylamine and N-allylbromodifluoroacetamides with the insertion of sulfur dioxide has been developed. Diverse difluoroamidosulfonylated quinolines are obtained in moderate to good yields. This protocol features broad functional group tolerance and high regioselectivity. Moreover, mechanistic studies reveal the involvement of the radical pathway and the formation of an electron donor-acceptor (EDA) complex in this reaction.
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Affiliation(s)
- Haiwei Ye
- Chemical Pharmaceutical Research Institute, Taizhou Vocational & Technical College, Taizhou, 318000, P.R. China.
| | - Liping Zhou
- Chemical Pharmaceutical Research Institute, Taizhou Vocational & Technical College, Taizhou, 318000, P.R. China.
| | - Yunhua Chen
- Chemical Pharmaceutical Research Institute, Taizhou Vocational & Technical College, Taizhou, 318000, P.R. China.
| | - Huaguang Tong
- Taizhou Daozhi Tech Co., Ltd, Taizhou, 318000, P.R. China
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4
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Sun B, Zhuang X, Yin J, Zhang K, Zhao H, Jin C. Photoredox-Catalyzed Tandem Radical Cyclization/Hydroxylation for the Synthesis of 4-Hydroxyalkyl-3,3-difluoro-γ-lactams. J Org Chem 2022; 87:14177-14185. [PMID: 36173277 DOI: 10.1021/acs.joc.2c01710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The photoredox-catalyzed radical difluoroalkylation/cyclization/hydroxylation cascade reaction of various 2-bromo-2,2-difluoro-N-arylacetamides containing unactivated alkene moieties has been developed, providing green and efficient access to various 4-hydroxyalkyl-3,3-difluoro-γ-lactams. Control experiments confirmed a radical process, and inexpensive air acted as the sole hydroxy resource. In addition, the highlights of this protocol include good tolerance for a variety functional groups, lower photocatalyst loading, and ease of operation.
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Affiliation(s)
- Bin Sun
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Xiaohui Zhuang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jieli Yin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Kesheng Zhang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Haiyun Zhao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Can Jin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China.,College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
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5
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Zheng X, Shen Q, Yin C, Li L, Zhong T, Yu C. Photoinduced Three‐Component Difluoroamidosulfonylation/Bicyclization: Regioselectivity Synthesis of Seven‐Membered Dibenzosultams. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xiangyun Zheng
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Qitao Shen
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanliu Yin
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Lianghao Li
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Tianshuo Zhong
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanming Yu
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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6
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Zhang Y, Chen Y, Sun J, Wang J, Zhou M. Visible‐light‐promoted Radical Cyclization/Arylation Cascade for the Construction of
α,
α
‐Difluoro‐
γ
‐Lactam‐Fused
Quinoxalin‐2(
1
H
)‐Ones. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100787] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yun‐Chao Zhang
- School of Petrochemical Engineering Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Yang Chen
- School of Petrochemical Engineering Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Jing Sun
- School of Petrochemical Engineering Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Jing‐Yun Wang
- School of Petrochemical Engineering Liaoning Petrochemical University Fushun Liaoning 113001 China
| | - Ming‐Dong Zhou
- School of Petrochemical Engineering Liaoning Petrochemical University Fushun Liaoning 113001 China
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7
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Affiliation(s)
- Cai Zhang
- Department of Safety Supervision and Management Chongqing Vocational Institute of Safety Technology Chongqing People's Republic of China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang People's Republic of China
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8
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Ye ZP, Liu F, Duan XY, Gao J, Guan JP, Xiao JA, Xiang HY, Chen K, Yang H. Visible Light-Promoted Radical Relay Cyclization/C-C Bond Formation of N-Allylbromodifluoroacetamides with Quinoxalin-2(1 H)-ones. J Org Chem 2021; 86:17173-17183. [PMID: 34743511 DOI: 10.1021/acs.joc.1c02285] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A visible light-promoted radical relay of N-allylbromodifluoroacetamide with quinoxalin-2(1H)-ones was developed in which 5-exo-trig cyclization and C-C bond formation were involved. This protocol was performed under mild conditions to facilely offer a variety of hybrid molecules bearing both quinoxalin-2(1H)-one and 3,3-difluoro-γ-lactam motifs. These prepared novel skeletons would expand the accessible chemical space for structurally complex heterocycles with potential biological activities.
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Affiliation(s)
- Zhi-Peng Ye
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Fang Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xin-Yu Duan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jie Gao
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jian-Ping Guan
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Nanning Normal University, Nanning 530001, P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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9
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Sun B, Shi X, Zhuang X, Huang P, Shi R, Zhu R, Jin C. Photoinduced EDA Complexes Enabled Radical Tandem Cyclization/Arylation of Unactivated Alkene with 2-Amino-1,4-naphthoquinones. Org Lett 2021; 23:1862-1867. [DOI: 10.1021/acs.orglett.1c00268] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Bin Sun
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiayue Shi
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiaohui Zhuang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Panyi Huang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Rongcheng Shi
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Rui Zhu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Can Jin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P. R. China
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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10
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Kondoh A, Terada M. Brønsted Base-Catalyzed Formal Reductive [3+2] Annulation of 4,4,4-Trifluorocrotonate and α-Iminoketones. Chemistry 2021; 27:585-588. [PMID: 32869872 DOI: 10.1002/chem.202002943] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/27/2020] [Indexed: 02/01/2023]
Abstract
A formal reductive [3+2] annulation of 4,4,4-trifluorocrotonate and α-iminoketones was developed under Brønsted base catalysis. A single phosphazene base efficiently catalyzes the one-pot tandem reaction involving two mechanistically different elementary processes, namely the chemoselective reduction of an imine moiety of α-iminoketones with thiols as the reductant and the subsequent intermolecular Michael addition of an enolate of α-aminoketones concomitant with lactam formation. This operationally simple method provides β-trifluoromethyl-substituted γ-lactams with a tetrasubstituted carbon as a single diastereomer.
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Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
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11
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Liao J, Yang X, Ouyang L, Lai Y, Huang J, Luo R. Recent advances in cascade radical cyclization of radical acceptors for the synthesis of carbo- and heterocycles. Org Chem Front 2021. [DOI: 10.1039/d0qo01453b] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This review is devoted to highlighting main achievements in the development of cascade radical cyclization of radical acceptors for the synthesis of carbo- and heterocycles.
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Affiliation(s)
- Jianhua Liao
- School of Pharmaceutical Sciences
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Xiao Yang
- School of Pharmaceutical Sciences
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Lu Ouyang
- School of Pharmaceutical Sciences
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Yinlong Lai
- College of Chemistry and Environmental Engineering
- Shaoguan University
- Shaoguan 512005
- China
| | - Jiuzhong Huang
- School of Pharmaceutical Sciences
- Gannan Medical University
- Ganzhou
- P. R. China
| | - Renshi Luo
- School of Pharmaceutical Sciences
- Gannan Medical University
- Ganzhou
- P. R. China
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12
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Zhuang X, Shi X, Zhu R, Sun B, Su W, Jin C. Photocatalytic intramolecular radical cyclization involved synergistic SET and HAT: synthesis of 3,3-difluoro-γ-lactams. Org Chem Front 2021. [DOI: 10.1039/d0qo01188f] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A mild and metal-free protocol for visible-light induced intramolecular radical cyclization of N-allyl(propargyl)-2-bromo-2,2-difluoro-N-arylacetamide has been developed.
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Affiliation(s)
- Xiaohui Zhuang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- Zhejiang University of Technology
- Hangzhou
- PR China
| | - Xiayue Shi
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou
- PR China
| | - Rui Zhu
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou
- PR China
| | - Bin Sun
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- Zhejiang University of Technology
- Hangzhou
- PR China
| | - WeiKe Su
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
- Zhejiang University of Technology
- Hangzhou
- PR China
- College of Pharmaceutical Sciences
| | - Can Jin
- College of Pharmaceutical Sciences
- Zhejiang University of Technology
- Hangzhou
- PR China
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals
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13
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Wang X, Lei J, Li G, Meng J, Li C, Li J, Sun K. Synthetic methods for compounds containing fluoro-lactam units. Org Biomol Chem 2020; 18:9762-9774. [PMID: 33237116 DOI: 10.1039/d0ob02168g] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
In recent years, considerable attention has been devoted to the exploration of novel synthetic methods for fluoro-lactams due to their significant biological and pharmaceutical activities. This review summarizes recently established strategies for synthesizing fluorine-substituted lactams, including fluoro-β-lactams, fluoro-γ-lactams, and fluoro-δ-lactams. Additionally, the reaction scopes, limitations, and mechanisms are discussed.
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Affiliation(s)
- Xin Wang
- School of Chemistry and Chemical Engineering, YanTai University, Yantai, 264005, Shandong, P. R. China.
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14
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Construction of Boronated
γ
‐Lactams via Palladium‐Catalyzed Intramolecular Boryldifluoroalkylation of Alkenes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000786] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Ye ZP, Xia PJ, Liu F, Hu YZ, Song D, Xiao JA, Huang P, Xiang HY, Chen XQ, Yang H. Visible-Light-Induced, Catalyst-Free Radical Cross-Coupling Cyclization of N-Allylbromodifluoroacetamides with Disulfides or Diselenides. J Org Chem 2020; 85:5670-5682. [PMID: 32240591 DOI: 10.1021/acs.joc.9b03490] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A visible-light-induced, catalyst-free radical cross-coupling cyclization of diselenides or disulfides with N-allylbromodifluoroacetamide has been developed. This developed protocol exhibits good functional group tolerance and affords a variety of 4-thio- and 4-seleno-substituted 3,3-difluoro-γ-lactams in moderate to good yields. Based on control experiments, a plausible radical-radical cross-coupling pathway is proposed.
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Affiliation(s)
- Zhi-Peng Ye
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Peng-Ju Xia
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Fang Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Yuan-Zhuo Hu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Dan Song
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University, Nanning, Guangxi 530001, P. R. China
| | - Ping Huang
- Technology Center of Hunan Provincial Tobacco Company, 386 Labor Middle Road, Changsha 410019, China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.,Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.,Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Central South University, Changsha 410083, P. R. China
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16
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Barrett SD, Holt MC, Kramer JB, Germain B, Ho CS, Ciske FL, Kornilov A, Colombo JM, Uzieblo A, O’Malley JP, Owen TA, Stein AJ, Morano MI. Difluoromethylene at the γ-Lactam α-Position Improves 11-Deoxy-8-aza-PGE1 Series EP4 Receptor Binding and Activity: 11-Deoxy-10,10-difluoro-8-aza-PGE1 Analog (KMN-159) as a Potent EP4 Agonist. J Med Chem 2019; 62:4731-4741. [PMID: 30964292 DOI: 10.1021/acs.jmedchem.9b00336] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A series of small-molecule full agonists of the prostaglandin E2 type 4 (EP4) receptor have been generated and evaluated for binding affinity and cellular potency. KMN-80 and its gem-difluoro analog KMN-159 possess high selectivity relative to other prostanoid receptors. Difluoro substitution is positioned alpha to the lactam ring carbonyl and results in KMN-159's fivefold increase in potency versus KMN-80. The two analogs exhibit electronic and conformational variations, including altered nitrogen hybridization and lactam ring puckering, that may drive the observed difluoro-associated increased potency within this four-compound series.
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Affiliation(s)
- Stephen D. Barrett
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Melissa C. Holt
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - James B. Kramer
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Bradlee Germain
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Chi S. Ho
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Fred L. Ciske
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Andrei Kornilov
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Joseph M. Colombo
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Adam Uzieblo
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - James P. O’Malley
- Myometrics, LLC, 216 Howard Street, New London, Connecticut 06320, United States
| | - Thomas A. Owen
- Myometrics, LLC, 216 Howard Street, New London, Connecticut 06320, United States
- Ramapo College of New Jersey, 505 Ramapo Valley Road, Mahwah, New Jersey 07430, United States
| | - Adam J. Stein
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
| | - Maria I. Morano
- Cayman Chemical Company, Inc., 1180 East Ellsworth Road, Ann Arbor, Michigan 48108, United States
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17
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Sun K, Wang S, Feng R, Zhang Y, Wang X, Zhang Z, Zhang B. Copper-Catalyzed Radical Selenodifluoromethylation of Alkenes: Access to CF 2-Containing γ-Lactams. Org Lett 2019; 21:2052-2055. [PMID: 30896184 DOI: 10.1021/acs.orglett.9b00240] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, a practical Cu-catalyzed selenodifluoromethylation protocol was developed, using readily available diselenides as the selenium source under external-oxidant-free conditions. Various structurally diverse 4-seleno-substituted α,α-difluoro-γ-lactams were obtained in moderate to excellent yields. Easy scaleup and the potential for product derivatization make this method attractive for the preparation of other valuable fIuorinated γ-lactams. Mechanistic studies suggest that the catalytic system may involve a radical pathway.
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Affiliation(s)
- Kai Sun
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Songnan Wang
- School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , 453007 , People's Republic of China
| | - Ranran Feng
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Yixiao Zhang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Xin Wang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , People's Republic of China
| | - Zhiguo Zhang
- School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , 453007 , People's Republic of China
| | - Bing Zhang
- College of Chemistry and Energy , Zhengzhou University , Zhengzhou 450001 , People's Republic of China
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18
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Borja-Miranda A, Sánchez-Chávez AC, Polindara-García LA. Ammonium Persulfate Promotes Radical Cyclization of 1,3-Dicarbonyl-Ugi 4-CR Adducts: Synthesis of Polysubstituted γ-Lactams in Aqueous Media. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Andrés Borja-Miranda
- Instituto de Química; Universidad Nacional Autónoma de México; Ciudad Universitaria 04510 Ciudad de México México
| | | | - Luis A. Polindara-García
- Instituto de Química; Universidad Nacional Autónoma de México; Ciudad Universitaria 04510 Ciudad de México México
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19
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Xiao YM, Liu Y, Mai WP, Mao P, Yuan JW, Yang LR. A Novel and Facile Synthesis of Chroman-4-one Derivatives via
Cascade Radical Cyclization Under Metal-free Condition. ChemistrySelect 2019. [DOI: 10.1002/slct.201900147] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yong-Mei Xiao
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Yang Liu
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Wen-Peng Mai
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
- School of Materials and Chemical Engineering; Henan University of Engineering; Zhengzhou 450006 China
| | - Pu Mao
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Jin-Wei Yuan
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
| | - Liang-Ru Yang
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou 450001 China
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20
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Yang Y, Cai J, Luo G, Jiang Y, Su Y, Su Y, Li C, Zheng Y, Zeng J, Liu Y. Nickel-catalyzed fluoroethylation of arylboronic acids via Suzuki-type coupling. Org Chem Front 2019. [DOI: 10.1039/c9qo00066f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A new and step-economic method for the synthesis of homobenzylic fluorides through nickel-catalyzed Suzuki-type fluoroethylation coupling is developed.
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Affiliation(s)
- Yi Yang
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Junjie Cai
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Gen Luo
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Yan Jiang
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Yumei Su
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Yang Su
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Chaolin Li
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Yubin Zheng
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Jijiao Zeng
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Yingle Liu
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
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21
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Jagtap RA, Vinod CP, Punji B. Nickel-Catalyzed Straightforward and Regioselective C–H Alkenylation of Indoles with Alkenyl Bromides: Scope and Mechanistic Aspect. ACS Catal 2018. [DOI: 10.1021/acscatal.8b04267] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Rani V, Singh HB, Butcher RJ. NCN Nickel(II) Pincer Complexes of 5‐
tert
‐Butyl‐1,3‐bis(
N
‐substituted benzimidazol‐2′‐yl)benzenes: Solid and Solution State Behaviour. ChemistrySelect 2018. [DOI: 10.1002/slct.201802644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Varsha Rani
- Department of ChemistryIndian Institute of Technology Bombay Mumbai 400076 India
| | - Harkesh B. Singh
- Department of ChemistryIndian Institute of Technology Bombay Mumbai 400076 India
| | - Ray J. Butcher
- Department of ChemistryHoward University 525 College Street NW, Washington, D.C. 20059 United States
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