4-(2-Aminoethylthiomethyl)-5-methylimidazole, an intermediate for the preparation of cimetidine, is prepared by the reaction of a 4,5-dimethylimidazole in which one methyl group is substituted by a hydroxy or lower alkoxy group or a chlorine or bromine atom, with a substituted ethyleneimino compound that is an N-(2-hydroxyethyl)-alkylthiocarbox- amide, an N-12-mercaptoethyl)-alkylcarboxamide, or a 2-alkyl-2-thiazoline.
4-(2-
氨乙基
硫甲基)-5-甲基
咪唑是制备
西咪替丁的中间体,它是由一个甲基被羟基或低级烷氧基或
氯或
溴原子取代的 4,5-二甲基
咪唑N-(2-羟乙基)-烷基
硫代甲酰胺、N-12-巯乙基)-烷基甲酰胺或 2-烷基-2-
噻唑啉的取代乙
亚胺化合物。