Nucleophilic difluoromethylation of CN bonds in heterocycles with difluoromethyl silane reagents

An efficient and straightforward nucleophilic difluoromethylation of CN bonds in heterocycles under the activation of alkylating agents has been developed. Cyclic iminium salts derived from dihydroisoquinolines, quinolines, and pyridines were successfully difluoromethylated with sulfur-based fluoroalkyl silanes affording a series of new difluoromethylated nitrogen-containing heterocyclic compounds.