重氮甲烷 、 2,2-Dimethyl-propionic acid (S)-5-[(S)-(tert-butyl-dimethyl-silanyloxy)-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-methyl]-4-chlorocarbonyl-2-oxo-2,5-dihydro-furan-3-yl ester 以
二氯甲烷 为溶剂,
生成
2,2-Dimethyl-propionic acid (S)-5-[(S)-(tert-butyl-dimethyl-silanyloxy)-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-methyl]-4-(2-diazo-acetyl)-2-oxo-2,5-dihydro-furan-3-yl ester