在
tris[triphenylphosphinegold(I)]oxonium tetrafluoroborate 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
生成 rac-(3R,4S,Z)-5-((tert-butyldimethylsilyl)methylene)-4-methyl-3-phenyldihydrofuran-2(3H)-one 、 rac-(3R,4R,Z)-5-((tert-butyldimethylsilyl)methylene)-4-methyl-3-phenyldihydrofuran-2(3H)-one