乙酸酐 、
2-[(1R,4S)-4-(tert-Butyl-dimethyl-silanyloxy)-1-(tert-butyl-dimethyl-silanyloxymethyl)-5-methyl-hex-5-enyl]-6-hydroxy-6H-pyran-3-one 在
4-二甲氨基吡啶 、
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 0.75h,
以91%的产率得到Acetic acid 6-[(1R,4S)-4-(tert-butyl-dimethyl-silanyloxy)-1-(tert-butyl-dimethyl-silanyloxymethyl)-5-methyl-hex-5-enyl]-5-oxo-5,6-dihydro-2H-pyran-2-yl ester