Author/Authors :
Gonzلlez، نويسنده , , Antonio G and Brouard، نويسنده , , Ignacio and Leَn، نويسنده , , Francisco and Padrَn، نويسنده , , Juan I and Bermejo، نويسنده , , Jaime، نويسنده ,
Abstract :
The acetyl group was chemoselectively cleaved in the presence of p-toluenesulfonic acid (p-TsOH) in CH2Cl2/MeOH without affecting the benzoyl (benzoate and p-bromobenzoate) groups and no transesterification product was observed. The treatment of protected carbohydrates with p-TsOH·H2O at room temperature usually required a longer reaction time than at 40°C. Other types of sulfonic acid such as 10-camphorsulfonic (CSA) led to similar results.
