Synthesis of alkyl bis(dimethylamino)methylenecarbamodithioates from 1,1,3,3-tetramethylguanidine, CS2 and oxiranes

An efficient synthesis of alkyl bis(dimethylamino)methylenecarbamodithioates via a one-pot reaction between 1,1,3,3-tetramethylguanidine, carbon disulfide and substituted oxiranes, in good yields, is described.