Synthesis of difluoromethylated formimidamides from primary aryl amines using TMSCF2Br as a dual C1 synthon

Abstract

A practical method that employs TMSCF2Br as a dual C1 synthon for the synthesis of a series of difluoromethylated formimidamides from primary aryl amines via a fluoromethylimine intermediate is described. The tolerance of the method to important functional groups including esters, alkynes, and difluoromethyl groups is explored. Gram-scale reactions are also included.