An Efficient Procedure for the Regioselective Monoprotection of 1,2-Diols
摘要:
Nucleophilic ring opening of isopropylidene ketals by trimethylaluminum is described. This reagent offers a new method for selective monoprotection of 1,2-diols. The regioselectivity of this reaction was studied with simple diols and with carbohydrates.
An Efficient Procedure for the Regioselective Monoprotection of 1,2-Diols
摘要:
Nucleophilic ring opening of isopropylidene ketals by trimethylaluminum is described. This reagent offers a new method for selective monoprotection of 1,2-diols. The regioselectivity of this reaction was studied with simple diols and with carbohydrates.
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.