The aromatic perfluoroalkylation catalyzed by a copper(I) salt with bis(perfluoroalkyl)zinc reagents Zn(RF)2(DMPU)2, which were prepared and then isolated as a stable white powder from perfluoroalkyl iodide and diethylzinc, was accomplished to provide the perfluoroalkylated products in good‐to‐excellent yields. The advantages of this reliable and practical catalytic reaction are 1) air‐stable and easy‐to‐handle
Trifluoromethylation of arenediazonium salts with fluoroform-derived CuCF<sub>3</sub>in aqueous media
作者:Anton Lishchynskyi、Guillaume Berthon、Vladimir V. Grushin
DOI:10.1039/c4cc04930f
日期:——
A new protocol has been developed for trifluoromethylation of arenediazonium salts with moisture-sensitive CuCF3 (from fluoroform) in aqueous media. The reaction is governed by a radical mechanism, tolerates a broad variety of functional groups, and is applicable to the synthesis of complex, polyfunctionalized molecules.
Fluoroform-Derived CuCF<sub>3</sub>for Low-Cost, Simple, Efficient, and Safe Trifluoromethylation of Aryl Boronic Acids in Air
作者:Petr Novák、Anton Lishchynskyi、Vladimir V. Grushin
DOI:10.1002/anie.201201613
日期:2012.7.27
Easy does it: Arylboronicacids undergo smooth and selective trifluoromethylation with low‐cost fluoroform‐derived CuCF3 in DMF in non‐dried air. The reaction occurs under mild conditions (1 atm, room temperature), exhibits unprecedented functional‐group tolerance, and affords trifluoromethylated aromatic compounds in up to 99 % yield.
Cyclic-Protected Hexafluoroacetone as an Air-Stable Liquid Reagent for Trifluoromethylations
作者:Kazuyuki Negishi、Kohsuke Aikawa、Koichi Mikami
DOI:10.1002/ejoc.201600711
日期:2016.8
reagent is readily synthesized from gaseous hexafluoroacetone and 2-methylproline on a gram scale. The reaction of the trifluoromethylating reagent with tert-butoxy cuprate K[Cu(OtBu)2] leads to the CuCF3 in high yield. This species is directly formed from the tetrahedral cuprate intermediate through intramolecular migration of the trifluoromethyl group to copper. The CuCF3 reagent prepared in situ by