Oxidative trifluoromethylation and fluoroolefination of unactivated olefins
作者:Ye-bin Wu、Guo-ping Lu、Tao Yuan、Zhu-bing Xu、Li Wan、Chun Cai
DOI:10.1039/c6cc08178a
日期:——
The fluorine-containing organic compounds are becoming privileged in medicinal chemistry. Described herein is a mild and efficient method for the radical addition of olefins with TMSCF3 and TMSCF2R (R=COOEt or...
Copper-mediated trifluoromethylation of propiolic acids: facile synthesis of α-trifluoromethyl ketones
作者:Zhengbiao He、Rui Zhang、Mingyou Hu、Lingchun Li、Chuanfa Ni、Jinbo Hu
DOI:10.1039/c3sc51613j
日期:——
Copper-mediated decarboxylative trifluoromethylation provides a new protocol for the efficient preparation of α-trifluoromethyl ketones from propiolic acids. It was found that water is involved as a reactant in the reaction, which is significantly different from the previously reported decarboxylative fluoroalkylation reactions.
Radical Desulfur‐Fragmentation and Reconstruction of Enol Triflates: Facile Access to α‐Trifluoromethyl Ketones
作者:Xiaolong Su、Honggui Huang、Yaofeng Yuan、Yi Li
DOI:10.1002/anie.201608507
日期:2017.1.24
efficient oxidative radical desulfur‐fragmentation and reconstruction of enoltriflates for the synthesis of α‐CF3 ketones. Preliminary mechanistic studies disclosed that oxidative fragmentation to release a CF3 radical from the triflyl group of enoltriflate and subsequent addition of the CF3 radical to another enoltriflate form the desired α‐CF3 ketones. This method provides a new approach to α‐CF3
Visible light induced Trifluoromethyl Migration: Easy Access to α-Trifluoromethylated Ketones from Enol Triflates
作者:Shuyang Liu、Jiyang Jie、Jipan Yu、Xiaobo Yang
DOI:10.1002/adsc.201701051
日期:2018.1.17
Herein, we reported a novel method to synthesize α-trifluoromethylated ketones from enol triflates. Involving a cascade sulfurdioxide extrusion and a CF3 (trifluoromethyl) radical addition process, this reaction proceeds at room temperature and is driven by visible light irradiation. This protocol bears good functional group compatibility, which can generate the desired products in good to excellent
The peroxy and trifluoromethyl groups play important roles in pharmacy, but it is challenging to introduce both of them selectively into the target molecules in a homogeneous catalytic system.