methyl (Z)-7-bromo-2-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]hept-4-enoate 、 3-methyl-[1,2,4]oxadiazol-5-one potassium salt 以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 18.0h,
以95%的产率得到methyl (Z)-2-methyl-7-(3-methyl-5-oxo-1,2,4-oxadiazol-4-yl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]hept-4-enoate