Differentiation of contiguous hydroxyl groups by regioselective conversion of acetonides into tert-butyl hydroxyalkyl ethers
摘要:
Treatment of the acetonides of simple contiguous diols or those derived from carbohydrates with the Grignard reagent yields regioselectively the corresponding hydroxyalkyl ether.
Reactions of acetonide derivatives of glucose, allose, galactose and fructose with MeMgI in benzene under reflux afford the corresponding monosaccharide derivatives having onlyone free hydroxy group in moderate to good yield.