VO(OTf)2 in acetonitrile T=20°C; 14 h;

1: p-tolyl 2,3-di-O-benzyl-1-thio-β-D-glucopyranoside With sodium hydride in N,N-dimethyl-formamide T=-15°C; 0.0833333 h; 2: benzyl bromide in N,N-dimethyl-formamide T=-15 - 20°C; 0.5 h;