(3R,4R)-1-allyl-3-[(1R)-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-prop-2-ynyloxy-azetidin-2-one 在
Grubbs catalyst first generation 作用下,
以
二氯甲烷 为溶剂,
反应 1.5h,
以80%的产率得到(3R,4R)-8-[(1R)-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-vinyl-6-oxa-1-aza-bicyclo[5.2.0]non-3-en-9-one