(8E,10E)-4-(tert-Butyl-dimethyl-silanyloxy)-7,7-dimethyl-dodeca-8,10-dien-2-ynoic acid ethyl ester 在
氯化二乙基铝 作用下,
以
甲苯 为溶剂,
以80%的产率得到(2R,4aR,8S)-8-(tert-Butyl-dimethyl-silanyloxy)-2,5,5-trimethyl-2,4a,5,6,7,8-hexahydro-naphthalene-1-carboxylic acid ethyl ester