6,7-bis-methoxy-1-biphenyl-4-ylmethyl-1,2,3,4-tetrahydro-isoquinoline 、
氯甲酸乙酯 、
sodium hydroxide 以
二氯甲烷 为溶剂,
以gave 1-Biphenyl-4-ylmethyl-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid ethyl ester 8的产率得到1-Biphenyl-4-ylmethyl-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid ethyl ester