反应详情

When 2-chloromethyl-4-methylthiazole [prepared by the reaction of thionyl chloride and 2-hydroxymethyl-4-methylthiazole, which itself is prepared according to the procedure of J. Chem. Soc., (Suppl. Issue No. 1), S106-111 (1966) or Acta Chem. Scand., 20, 2649 (1966)] is reacted with cysteamine hydrochloride and about two equivalents of a strong base such as sodium methoxide, and the resultant amine is treated with 3,4-dimethoxy-1,2,5-thiadiazole 1,1-dioxide, there is produced 3-methoxy-4-{2-[(4-methylthiazol-2-yl)methylthio]ethylamino}-1,2,5-thiadiazole 1,1-dioxide. When the latter compound is reacted with methylamine according to the general procedure of Example 31, there is produced 3-methylamino-4-{2-[(4-methylthiazol-2-yl)methylthio]ethylamino}-1,2,5-thiadiazole 1,1-dioxide.

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