Tetrahedron Letters p. 1941 - 1944 (1998)
Update date:2022-08-16
Topics:
Zuo, Xiaobin
Liu, Hanfan
Liu, Manhong
Finely dispersed polyvinylpyrrolidone-stabilized platinum clusters (PVP-Pt) modified with cinchonidine catalyze the asymmetric hydrogenation of α-ketoesters, giving enantiomeric excesses in favour of R-(+)-methyl lactate up to 97.6%. The reaction is demonstrated to be structure insensitive and runs best over a tiny cluster with a mean size of 1.4 nm, which is quite different from conventional supported catalysts.
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