Oxyphosphorane reacted with glucose to give disaccharide which was confirmed by FAB-MS and 13C-NMR. The mechanism for formation of oligosaccharides through the participation of phosphorus was proposed Oxyphosphorane reacted with glucose to give disaccharide which was confirmed by FAB-MS and 13C-NMR. The mechanism for formation of oligosaccharides through the participation of phosphorus was proposed