title: A mild, efficient and alpha-selective glycosidation by using potassium dodecatungstocobaltate trihydrate as catalyst.
abstract: Treatment of tri-O-acetyl-d-glucal 1 with several alcohols in the presence of catalytic amount of POM (K(5)CoW(12)O(40).3H(2)O) as a heterogeneous, reusable, efficient and environmentally benign catalyst under neutral conditions and ambient temperature gave the corresponding 2,3-unsaturated glycopyranosides in excellent yields, with good anomeric selectivity. This catalyst proved to be not efficient for phenols.
authors.affiliation: Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran. e.rafiee@sci.ui.ac.ir
authors.forename: Ezzat
authors.initials: E
authors.lastname: Rafiee
authors.forename: Shahram
authors.initials: S
authors.lastname: Tangestaninejad
authors.forename: Mohammad H
authors.initials: MH
authors.lastname: Habibi
authors.forename: Valiollah
authors.initials: V
authors.lastname: Mirkhani
mesh_terms: D019905:Benzyl Alcohol / Q000737:chemistry; D002384:Catalysis; D003035:Cobalt / Q000737:chemistry*; D006027:Glycosides / Q000138:chemical synthesis*; D006031:Glycosylation; D008956:Models, Chemical; D010636:Phenols / Q000737:chemistry; D011188:Potassium / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D017973:Tungsten Compounds / Q000737:chemistry*
chemical_list: D006027:Glycosides; D010636:Phenols; D012997:Solvents; D017973:Tungsten Compounds; D003035:Cobalt; D019905:Benzyl Alcohol; D011188:Potassium