1: o-hydroxynitrobenzene With C16H28AgN4(1+); N-benzyl-N,N,N-triethylammonium chloride T=25°C; 0.333333 h; 2: 2,3,4,6-tetra-O-acetyl-alpha-D-galactopyranosyl bromide T=25°C; 3 h;

pyridine 5 h; cooling;

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;

methanol; barium dimethoxide

methanol; barium dimethoxide