A method for synthesizing N-trifluoromethylazole derivatives has been developed via the reaction of their sodium salts with dibromodifluoromethane and substitution of bromine by fluorine. The first ionic liquids with a trifluoromethyl group on an imidazole nitrogen atom have been synthesized.
Chemical properties of derivatives of N-difluoromethyl-and N-2-H-tetrafluoroethylpyrazoles
作者:K. I. Petko、T. M. Sokolenko、L. M. Yagupolskii
DOI:10.1007/s10593-006-0222-z
日期:2006.9
N -Difluoromethylation of imidazoles and pyrazoles using BrCF 2 PO(OEt) 2 under mild condition
作者:Ting Mao、Liang Zhao、Yang Huang、Yue-Guang Lou、Qiuli Yao、Xiao-Fei Li、Chun-Yang He
DOI:10.1016/j.tetlet.2018.06.003
日期:2018.7
A simple and efficient protocol for the direct N-difluoromethylation of imidazoles and pyrazoles has been developed. The reaction makes use of commercially available, non-ozone-depleting and easy handling BrCF2PO(OEt)2 as difluorocarbene precursor, and provides a cost-efficient and environmentally benign access to some difluoromethylated biologically relevant molecules.