Consecutive catalytic hydroformylation-acetalization of glucal derivatives with rhodium–phosphite and pyridinium toluene-p-sulfonate as catalysts: the influence of protecting groups.
Abstract
Consecutive catalytic hydroformylation-acetalization of unsaturated carbohydrates (glucals) to give the dimethyl acetal of 2-C-formyl-D-alditol derivatives using the catalytic system [Rh(µ-OMe)(cod)]2/P(O-o-ButC6H4)3/PPTS is strongly dependent on the protecting groups on the carbohydrate.