methyl 2-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-3,4-O-isopropylidene-α-D-galactopyranoside 、
2,3,4,6-四乙酰氧基-alpha-D-吡喃葡萄糖溴化物 在
氰化汞 、 mercury dibromide 作用下,
以
乙腈 为溶剂,
反应 1.0h,
以70%的产率得到methyl 2-O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-3,4-O-isopropylidene-6-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-α-D-galactopyranoside