3-Thiocyano-2-butanone (I) has been shown'to Table I lists a series of products formed by the react with ammonium chloride to form 2-amino-4, 5-reaction of I with the appropriate amine hydrodimethylthiazole hydrochloride. For this reason chloride using conditions similar to those used for it was of interest to determine whether I would re-the preparation of 2- methylamino-4, 5-dimethyl-act with amine hydrochlorides to form 2-substituted-thiazole. ...