abstract:In chemistry, a leaving group is a molecular fragment that departs with a pair of electrons in heterolytic bond cleavage. Leaving groups can be anions or neutral molecules, but in either case it is crucial that the leaving group be able to stabilize the additional electron density that results from bond heterolysis.
Conclusion The 3, 5-dinitrobenzoylgroup was found to be a goodleaving group at the anomeric position and O-glucopyranosides and oligosaccharides were stereoselectively synthesized in goodyield.