4'-<(3-butyl-5,6-dihydro-6-methyl-5-oxo-4H-1,2,4-oxadiazin-4-yl)methyl><1,1'-biphenyl>-2-carboxylic acid 在
caesium carbonate 作用下,
以
N-甲基乙酰胺 为溶剂,
以49%的产率得到4'-[(3-Butyl-5,6-dihydro-6,6-dimethyl-5-oxo-4H-1,2,4-oxadiazin-4-yl)methyl][1,1-biphenyl]-2-carboxylic acid, 1,1-dimethylethyl ester