1: o-hydroxynitrobenzene With 1-n-butyl-3-methylimidazolium chloride; silver carbonate T=25°C; Koenigs-Knorr type coupling; 0.25 h; Darknessneat (no solvent); 2: 2,3,4,6-tetra-O-acetyl-alpha-D-galactopyranosyl bromide T=25 - 80°C; Koenigs-Knorr type coupling; 0.5 h; Darknessneat (no solvent); optical yield given as percent destereoselective reaction;

in N,N,N',N',N'',N''-hexamethylphosphoric triamide 40 deg C, 6 h; r.t.;

1: dichloromethyl methyl ether, boron trifluoride 2: 51 percent / hexamethylphosphoric acid triamide / 40 deg C, 6 h; r.t. View Scheme

mercury(II) cyanide