Synthesis of N-[3-(dimethylamino)-2-(substituted thio)-2-propenylidene]-N-methylmethanaminium salts via 2-(alkylthio)- and 2-(arylthio)-3-(dimethylamino)acroleins
Camsylate salts of N-(3-dialkylamino-2-propenylidene)-N-alkylalkanaminium substituted in the 2-position with an ether or thioether and having the formula ##STR1## are active as hypoglycemic agents.