(3aR,5S,6R,6aR)-5-[(1S)-1-acetoxybut-3-enyl]-6-benzyloxy-2,2-dimethyl-5-vinyltetrahydrofuro[2,3-d][1,3]dioxole 在
Grubbs catalyst first generation 作用下,
以
二氯甲烷 为溶剂,
反应 5.0h,
以81%的产率得到[(1'S,3aR,5R,6R,6aR)-2,2-dimethyl-6-phenylmethoxyspiro[6,6a-dihydro-3aH-furo[2,3-d][1,3]dioxole-5,2'-cyclopent-3-ene]-1'-yl] acetate