2-diazo-N-<2-(3,4-dimethoxyphenyl)ethyl>-N-(5-methylhex-5-enoyl)malonamic acid ethyl ester 在
dirhodium(II) tetrakis(perfluorobutyrate) 作用下,
以
甲苯 为溶剂,
反应 24.0h,
以95%的产率得到9-<2-(3,4-dimethoxyphenyl)ethyl>-5-methyl-8-oxo-10-oxa-9-azatricyclo<5.2.1.0
1,5>decane-7-carboxylic acid ethyl ester