INFLUENCE OF TEMPERATURE AND PH ON THE PLATINUM-CATALYZED OXIDATION OF SUCROSE

The influence of temperature and pH on the platinum catalysed oxidatio n of sucrose has been studied. Decreasing reaction temperature from 10 0 degrees C to 80 degrees C markedly reduced oxidation rate but had li ttle or no effect on selectivity. At pH 7.0, the C6 and C6' hydroxyl g roups were oxidised, but there was no oxidation at the C1' hydroxyl gr oup. At pH 9.0 the C1' hydroxyl group was oxidised and the resulting p roduct mixture contained a higher proportion of dicarboxylic acid disa ccharides and decomposition products. H-1 NMR was used to analyse comp lex product mixtures.