211935-52-3Relevant articles and documents
Difluoromethylation of Alkyl Bromides and Iodides with TMSCF2H
Zhao, Haiwei,Lu, Changhui,Herbert, Simon,Zhang, Wei,Shen, Qilong
supporting information, p. 2854 - 2865 (2021/02/06)
We describe, for the first time, two protocols for direct difluoromethylation of unactivated alkyl bromides and iodides. Reactions of alkyl iodides with TMSCF2H were mediated by a copper catalyst using CsF as the activator, while reactions of less reactive alkyl bromides required a combination of palladium and a stoichiometric amount of CuI as the catalysts. Preliminary mechanistic studies of the synergistic Pd/Cu-catalyzed difluoromethylation of alkyl bromides suggest that it proceeds likely via a Pd(I)/Pd(III) catalytic cycle.