4-allyl-3-(3-methyl-2,4-dioxo-1,2,3,4-tetrahydro-6-pyrimidinyl)-5-methylthio-1,2,4-triazoe 在
溴 、
potassium carbonate 、
溶剂黄146 作用下,
以
乙醇 为溶剂,
反应 14.25h,
生成 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