4'-<(3-butyl-5,6-dihydro-6-methyl-5-oxo-4H-1,2,4-oxadiazin-4-yl)methyl><1,1'-biphenyl>-2-carboxylic acid t-butyl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以54%的产率得到4'-<(3-butyl-5,6-dihydro-6-methyl-5-oxo-4H-1,2,4-oxadiazin-4-yl)methyl><1,1'-biphenyl>-2-carboxylic acid