4-(trifluoromethyl)-4,5,5,5-tetrafluoropent-1-ene 、
26,27-dinor-5β-cholest-24-en-3α-ol tert-butyldimethylsilyl ether 在
Hoveyda-Grubbs catalyst second generation 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
生成 (1,1-dimethylethyl)dimethyl{[(3α)-20-(6-trifluoromethyl-6,7,7,7-tetrafluorohept-3(Z)-en-1-yl)pregnan-3-yl]oxy}silane 、
(1,1-dimethylethyl)dimethyl{[(3α)-20-(6-trifluoromethyl-6,7,7,7-tetrafluorohept-3(E)-en-1-yl)pregnan-3-yl]oxy}silane