2-butyl-1-<2'-<(1,1-dimethylethoxy)carbonyl><1,1'-biphenyl>-4-yl>-6-chloro-1,4-dihydro-4,4-dimethyl-5-pyrimidinecarboxylic acid, ethyl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
以69.1%的产率得到2-butyl-1-<<2'-carboxy<1,1'-biphenyl>-4-yl>methyl>-6-chloro-1,4-dihydro-4,4-dimethyl-5-pyrimidinecarboxylic acid, ethyl ester