Article
Chemistry, Organic
Jinshan Li, Saimei Liu, Rong Zhong, Yaqi Yang, Jinjing Xu, Jianguo Yang, Hanfeng Ding, Zhiming Wang
Summary: A TfOH-promoted method for synthesizing fluorinated poly-fused heterocycles has been developed, allowing the convenient construction of fluorinated benzofuro[3,2-b]pyridines, 5H-indeno-[1,2-b]pyridines, and 5,6-dihydrobenzo[h]quinolines. This method involves a one-pot [4 + 2] approach and is highlighted by the successful synthesis of three fluoro analogues of bioactive molecules.
Article
Chemistry, Organic
Jianli Zheng, Yingqian Xu, Shaorui Song, Ling Huang, Dongdong Cao, Aiguo Zhong, Jianguo Yang, Dingben Chen
Summary: The photoredox-catalyzed 1,6-difluoromethylation of 3-methyl-4-nitro-5-styrylisoxazole with HCF2SO2Na has been developed, yielding structurally diverse difluoromethylated products. The di-, tri-, and monofluoromethylation were compared, showing the highest yield for difluoromethylation. DFT calculations revealed the nucleophilicity of CF2H radical and the lowest transition state activation energy in the difluoromethylation reaction.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wenjun Miao, Yanchuan Zhao, Chuanfa Ni, Bing Gao, Wei Zhang, Jinbo Hu
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Multidisciplinary
Min Zhou, Chuanfa Ni, Yuwen Zeng, Jinbo Hu
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Organic
Rui Zhang, Chuanfa Ni, Yanchuan Zhao, Jinbo Hu
Article
Chemistry, Applied
Rui Zhang, Chuanfa Ni, Zhengbiao He, Jinbo Hu
TOPICS IN CATALYSIS
(2018)
Article
Chemistry, Multidisciplinary
Qiqiang Xie, Ziyue Zhu, Lingchun Li, Chuanfa Ni, Jinbo Hu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Organic
Jun Wei, Huamin Liang, Chuanfa Ni, Rong Sheng, Jinbo Hu
Article
Chemistry, Multidisciplinary
Junkai Guo, Cuiwen Kuang, Jian Rong, Lingchun Li, Chuanfa Ni, Jinbo Hu
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Multidisciplinary
Zhiqiang Wei, Wenjun Miao, Chuanfa Ni, Jinbo Hu
Summary: The iron-catalyzed radical difluoroalkylation of arylborates with N-heteroaryl sulfones is a breakthrough in the challenging alkyl-aryl coupling reaction. The coordination between the iron catalyst and the nitrogen atom of N-heteroaryl sulfones plays a crucial role in enabling both fluoroalkyl N-heteroaryl sulfones and nonfluorinated alkyl N-heteroaryl sulfones to serve as powerful alkylation reagents.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Rongyi Zhang, Qigang Li, Qiqiang Xie, Chuanfa Ni, Jinbo Hu
Summary: A simple strategy using difluorocarbene to activate carbon-chalcogen bonds is reported for the ring-opening difluoromethylation-halogenation of cyclic (thio)ethers. This reaction proceeds through the in situ protonation of previously little-known difluoromethylene oxonium or sulfonium ylide intermediates, followed by ring-opening with halide ion to yield halogenated acyclic difluoromethyl (thio)ethers. TMSCF2X (X=Br, Cl) serves as unique reagents for both difluorocarbene source and halide ion source in this synthetic purpose.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Depei Meng, Yichong Lyu, Chuanfa Ni, Min Zhou, Yang Li, Jinbo Hu
Summary: (Trifluoromethyl)benzothioate is an inexpensive, stable, and user-friendly trifluoromethylthiolation reagent that can be used in various synthetic reactions.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Multidisciplinary Sciences
Junkai Guo, Xiu Wang, Chuanfa Ni, Xiaolong Wan, Jinbo Hu
Summary: The authors have developed a general and practical method for the synthesis of alkyl azides from alcohols using NaN3 as a direct deoxyazidation agent. The use of N-tosyl-4-chlorobenzenesulfonimidoyl fluoride (SulfoxFluor) enables the conversion of a wide range of alcohols into alkyl azides at room temperature. The versatility of this method has been demonstrated through the successful deoxyazidation of natural products and pharmaceutically relevant molecules.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
An Liu, Chuanfa Ni, Qiqiang Xie, Jinbo Hu
Summary: We have developed a new strategy for controllable CF2 insertions into C-H bonds of aldehydes under transition-metal-free conditions. The success of this strategy relies on the formation of well-defined intermediates using the difluorocarbene reagent TMSCF2Br. These intermediates can react with various electrophiles, leading to the synthesis of diverse ketones containing CF2 and CF2CF2 units.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xin Zhou, Chuanfa Ni, Ling Deng, Jinbo Hu
Summary: The radical fluoroalkylation of alkenes has been developed through electrochemical reduction of fluoroalkyl sulfones, leading to good to excellent yields. This represents the first example of electrochemical generation of fluoroalkyl radicals from sulfones for practical radical fluoroalkylation of organic compounds.
CHEMICAL COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Robert Britton, Veronique Gouverneur, Jin-Hong Lin, Michael Meanwell, Chuanfa Ni, Gabriele Pupo, Ji-Chang Xiao, Jinbo Hu
Summary: Fluorinated molecules have various applications, with fluorination and fluoroalkylation being the main strategies for constructing carbon-fluorine and fluorinated carbon-carbon bonds. Rapid growth in fluorination and fluoroalkylation methods has been witnessed in the past two decades due to the development of new reagents and catalysts, and further landmark achievements are expected in everyday applications as organofluorine compounds are increasingly used.
NATURE REVIEWS METHODS PRIMERS
(2021)
Article
Chemistry, Multidisciplinary
Dingben Chen, Zili Fan, Ling Huang, Kaili Gao, Pan Xiao, Chuanfa Ni, Jinbo Hu
Summary: TMSCFX2 (X = Cl, Br; TMS = trimethylsilyl) have been developed as halofluorocarbene precursors for [2+1] cyclopropanation with alkenes, yielding structurally diverse halofluorocyclopropanes in good to excellent yields. It was observed that the reactivity order of the three halofluorocarbene reagents (TMSCF2Br, TMSCFCl2, and TMSCFBr2) in the cyclopropanation reaction with 1,1-diphenylethylene can vary significantly under different reaction conditions.
CHEMICAL COMMUNICATIONS
(2021)