1-Amino-2-thioxo-4-imidazolidinones 1 react with phenacyl bromides to yield 3-alkoxycarbonylmethyl-5-aryl-2-iminio-3,6-dihydro-2H-1,3,4-thiadiazine salts 3. Compounds 1 also react with aryl isothiocyanates to give N-aryl-N′-(3-aryl/alkyl-4-oxo-2-thioxoimidazolidinyl)thioureas 6, which by the action of amines undergo a ring-closure/ring-opening reaction to give 4-aryl-1-aryl/alkylaminocarbonylmethyl-3-sulfido-5-thioxo-3, 4-dihydro-1H-1,2,4-triazole derivatives 7.
1-
氨基-2-
硫代-
4-咪唑烷酮 1 与苯
乙酰溴反应,生成 3-烷氧羰基甲基-5-芳基-2-
亚胺-3,6-二氢-2H-1,3,4-
噻二唑盐 3。化合物 1 还与芳基异
硫氰酸酯反应,生成 N-芳基-N′-(3-芳基/烷基-4-氧-2-
硫代
咪唑烷酮)
硫脲 6,这种化合物在胺的作用下发生环闭合/环打开反应,生成 4-芳基-1-芳基/烷基
氨基羰基甲基-3-
硫代-5-
硫代-3,4-二氢-
1H-1,2,4-三唑衍
生物 7。