Copper-Catalyzed Direct C–H Oxidative Trifluoromethylation of Heteroarenes
作者:Lingling Chu、Feng-Ling Qing
DOI:10.1021/ja209992w
日期:2012.1.18
This article describes the copper-catalyzed oxidative trifluoromethylation of heteroarenes and highly electron-deficient arenes with CF(3)SiMe(3) through directC-H activation. In the presence of catalyst Cu(OAc)(2), ligand 1,10-phenanthroline and cobases tert-BuONa/NaOAc, oxidative trifluoromethylation of 1,3,4-oxadiazoles with CF(3)SiMe(3) proceeded smoothly using either air or di-tert-butyl peroxide
[EN] FGFR AND MUTATION INHIBITOR THEREOF, AND PREPARATION METHOD THEREFOR AND USE THEREOF<br/>[FR] FGFR ET INHIBITEUR DE MUTATION DE CELUI-CI, PROCÉDÉ DE PRÉPARATION CORRESPONDANT ET UTILISATION ASSOCIÉE<br/>[ZH] 一种FGFR及其突变抑制剂,其制备方法和应用
Synthesis of 2-trifluoromethyl benzimidazoles, benzoxazoles, and benzothiazoles <i>via</i> condensation of diamines or amino(thio)phenols with CF<sub>3</sub>CN
method is developed for the synthesis of 2-trifluoromethyl benzimidazoles, benzoxazoles, and benzothiazoles in good to excellent yields by the condensation of diamines or amino(thio)phenols with in situ generated CF3CN. Additionally, the synthetic utility of the 2-trifluoromethyl benzimidazole and benzoxazole products is demonstrated via gram scale synthesis. The mechanisticstudy suggests that the reaction