2-Diazo-3-oxo-hept-6-enoic acid (1R,2S,3R,4R)-4,7,7-trimethyl-3-naphthalen-2-yl-bicyclo[2.2.1]hept-2-yl ester 在
copper acetylacetonate 作用下,
以
甲苯 为溶剂,
以95%的产率得到2-Oxo-bicyclo[3.1.0]hexane-1-carboxylic acid (1R,2S,3R,4R)-4,7,7-trimethyl-3-naphthalen-2-yl-bicyclo[2.2.1]hept-2-yl ester