Electroorganic Synthesis 66: Selective Anodic Oxidation of Carbohydrates Mediated by TEMPO
作者:Karsten Schnatbaum、Hans J. Schäfer
DOI:10.1055/s-1999-3464
日期:1999.5
The carbohydrates 4-15 are anodically oxidized with 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) as mediator. Selective and complete reaction at the primary hydroxyl groups affords the corresponding carboxylic acid 16-32 in moderate to excellent yield. Methyl α-d-glucopyranoside is converted in 98% yield to the uronic acid 16. Cyclic voltammetry shows that the oxydation is base-catalyzed and the oxidation of the hydroxy group with TEMPO+ (2) is rate determining.