Asymmetric hydrogenation of ethyl pyruvate was studied on nano Pt catalyst stabilized by PEG or PVA in the presence of cinchonidine. The ee value decreases due to the effect between -OH in the PVA and the catalyst.
PEG-stabilized platinum nanoparticles with uniform size were prepared successfully. They did not precipitate after being stored for four months. The nanoparticles show high catalytic activity for hydrogenation of styr...