2-{1-[(R)-1-((4S,5S)-2,2-Dimethyl-5-vinyl-[1,3]dioxolan-4-yl)-2-trityloxy-ethoxy]-allyloxy}-tetrahydro-pyran 在
Grubbs catalyst first generation 作用下,
以
甲苯 为溶剂,
反应 24.0h,
以53%的产率得到(3aS,4R,8aS)-2,2-dimethyl-6-(oxan-2-yloxy)-4-(trityloxymethyl)-3a,4,6,8a-tetrahydro-[1,3]dioxolo[4,5-c]oxepine