3-(5-bromo-3-methyl-2,4-dioxo-1,2,3,4-tetrahydro-6-pyrimidinyl)-4-(2,3-dibromopropyl)-5-methylthio-1,2,4-triazoe 在
potassium carbonate 作用下,
以
乙醇 为溶剂,
反应 14.0h,
以56%的产率得到11-bromo-9-methyl-6-methylene-3-methylthio-5,6,9,10-tetrahydro-8H-[1,2,4]triazolo[3',4':3,4]pyrazino[1,2-c]pyrimidine-8,10-dione