Catalyst- and additive-free syntheses of rhodanine and -alkyl dithiocarbamate derivatives from sulfoxonium ylides

An efficient catalyst- and additive-free facile access to rhodanine and S -alkyl dithiocarbamate derivatives via multi-component reaction of amines, CS 2 and α-ester sulfoxonium ylides in methanol has been described. The new synthetic methods offer excellent synthetic prospects for several functionalized rhodanines and S -alkyl dithiocarbamates with simple operational procedures. An efficient catalyst- and additive-free facile access to rhodanine and S -alkyl dithiocarbamate derivatives via multi-component reaction of amines, CS 2 and α-ester sulfoxonium ylides in methanol has been described.