(R)-5-(dimethyl(phenyl)silyl)-2-methylcyclohex-2-enone 、
Triethyl-[1-(6-prop-2-enoxy-3,4-dihydronaphthalen-1-yl)ethenoxy]silane 在
甲基二氯化铝 作用下,
以
二氯甲烷 为溶剂,
反应 2.5h,
以85%的产率得到(2R,4aS,4bS,12aR)-8-Allyloxy-2-(dimethyl-phenyl-silanyl)-4a-methyl-11-triethylsilanyloxy-2,3,4a,4b,5,6,12,12a-octahydro-1H-chrysen-4-one