3-O-acetyl-2-azido-2,4,6-trideoxy-4-phthalimido-D-galactopyranose 、
三氯乙腈 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
生成 O-(3-O-acetyl-2-azido-2,4,6-trideoxy-4-phthalimido-β-D-galactopyranosyl) trichloroacetimidate 、
O-(3-O-acetyl-2-azido-2,4,6-trideoxy-4-phthalimido-α-D-galactopyranosyl) trichloroacetimidate