Preparation of acetylated pyranoid glycals from glycosyl halides by chromium(II) complexes under aqueous biphasic conditions.
Reactions of chromium(II) aminocarboxylate complexes (ethylenediamine-tetraacetate, nitrilo-triacetate, imino-diacetate) with acetylated glycopyranosyl chlorides or bromides in liquid-liquid or solid-liquid biphasic media (such as water-diethylether, water-ethyl acetate or halosugar-water) give the corresponding glycals in 75-97% yield.
Kovács
G
G
Department of Inorganic and Analytical Chemistry, Faculty of Natural Sciences, University of Debrecen, Egyetem tér 1, H-4010 Debrecen, Hungary.
Micskei
K
K
Somsák
L
L
D000107:Acetylation; D000475:Alkenes; D002857:Chromium / Q000737:chemistry*; D003847:Deoxyglucose / Q000031:analogs & derivatives / Q000138:chemical synthesis*; D015394:Molecular Structure; D009005:Monosaccharides / Q000138:chemical synthesis; D009942:Organometallic Compounds / Q000737:chemistry
D000475:Alkenes; D009005:Monosaccharides; D009942:Organometallic Compounds; D002857:Chromium; D003847:Deoxyglucose