乙酸酐 、
Acetic acid (2R,3R,4R,5R)-2-(4-acetoxy-phenyl)-4-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-3-yl ester 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 11.0h,
生成 Acetic acid (2R,3R,4R,5R)-2-(4-acetoxy-3-bromo-phenyl)-4-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-3-yl ester