The following heterocyclic mercapto compounds are heated in aqueous solution with sodium chloroacetate to give the corresponding carboxymethylmercapto-derivatives; 1-phenyl-2-imidazole-thione, 2-mercaptopyrimidine and its 4, 6-diamino-, 4, 5, 6-triamino, 4-amino-6-hydroxy or 4-hydroxy-6-methylderivatives, 2-mercaptobenzoxazole, 2-mercaptobenzthiazole, 3-phenyl (or amino)-4-amino-5-mercapto- 1, 2, 4-triazole, 3-mercapto-5-hydroxy (or phenyl) 6-methyl-1, 2, 4-triazine and 2-mercapto-imidazoline and its 4-methyl-derivative. 2-Carboxymethylmercapto- 4, 6-diamino-S-triazine is prepared by adding chloroacetic acid to a solution of 4, 6-diamino-2-mercapto-s-triazine in aqueous sodium hydroxide. 2-(1-Carboxyoctylmercapto)-4, 6-diamino-S-triazine is prepared by stirring a solution of a -bromopelargonic acid and 4, 6-diamino-2-mercapto-s-triazine in aqueous sodium hydroxide. 2-Carboxymethylmercapto-imidazoline chloroacetate is prepared by p boiling 2-mercapto-imidazoline and chloroacetic acid in water. Specifications 235,211 and 634,951 are referred to.
以下杂环巯基化合物在水溶液中与氯乙酸钠加热,生成相应的羧甲基巯基衍生物;1-苯基-2-咪唑硫酮,2-巯基嘧啶及其4,6-二氨基-, 4,5,6-三氨基-, 4-氨基-6-羟基或4-羟基-6-甲基衍生物,2-巯基苯并噁唑,2-巯基苯并噻唑,3-苯基(或氨基)-4-氨基-5-巯基-1,2,4-三唑,3-巯基-5-羟基(或苯基)6-甲基-1,2,4-三嗪和2-巯基-咪唑啉及其4-甲基衍生物。通过将氯乙酸加入水溶性氢氧化钠中的2-巯基-4,6-二氨基-S-三嗪溶液制备2-羧甲基巯基-4,6-二氨基-S-三嗪。通过在水溶性氢氧化钠中搅拌溴辛酸和4,6-二氨基-2-巯基-S-三嗪的溶液制备2-(1-羧基辛基巯基)-4,6-二氨基-S-三嗪。通过在水中将2-巯基咪唑啉和氯乙酸反应制备2-羧甲基巯基-咪唑啉酸氯乙酸酯。参考规格235,211和634,951。