1: 2,3,4,6-Tetra-O-benzyl-α-D-mannopyranosyl chloride With N,N-dimethylimidazolone; ethylene glycol dimethyl ether; nickel dichloride T=20°C; 0.333333 h; 2: bromo(4-ethoxy-4-oxobutyl)zinc 12 h;

1: 2,3,4,6-Tetra-O-benzyl-α-D-mannopyranosyl chloride With N,N-dimethylimidazolone; ethylene glycol dimethyl ether; nickel dichloride T=20°C; 0.333333 h; 2: (2-(1,3-dioxolan-2-yl)ethyl)zinc(II) bromide 12 h;

1: 2,3,4,6-Tetra-O-benzyl-α-D-mannopyranosyl chloride With N,N-dimethylimidazolone; ethylene glycol dimethyl ether; nickel dichloride T=20°C; 0.333333 h; 2: C11H10BrNO2Zn 12 h;