A new route for the synthesis of thiocarbamates using a transition metal co
mplex and CO as a replacement for phosgene has been discovered. The complex
(PPh3)(2)PdCl2 reacts with N-benzylmethylamine, 4-chlorobenzenethiol, and
CO to selectively generate a thiocarbamate. Kinetic studies and the isolati
on of several intermediates in this reaction allow for the proposal of a me
chanistic scheme.