tetrahydro-1-(5-methyl-1,3,4-thiadiazol-2-yl)-3-methyl-6-hydroxy-2 (1H)-pyrimidinone 、
氯甲酸甲酯 在
乙醚 、
disodium;carbonate 、
magnesium sulfate 、
tetrahydro-1-(5-methyl-1,3,4-thiadiazol-2-yl)-3-methyl-6-methoxycarbonyloxy-2(1H)-pyrimidinone 作用下,
以
吡啶 为溶剂,
反应 0.58h,
以to yield the desired product tetrahydro-1-(5-methyl-1,3,4-thiadiazol-2-yl)-3-methyl-6-methoxycarbonyloxy-2(1H)-pyrimidinone as the residue的产率得到tetrahydro-1-(5-methyl-1,3,4-thiadiazol-2-yl)-3-methyl-6-methoxycarbonyloxy-2(1H)-pyrimidinone