Improvement in the enantioselective hydrogenation of methyl pyruvate over platinum clusters by addition of rare earth cations

Citation
Xp. Yan et al., Improvement in the enantioselective hydrogenation of methyl pyruvate over platinum clusters by addition of rare earth cations, CATAL LETT, 74(1-2), 2001, pp. 81-83
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
CATALYSIS LETTERS
ISSN journal
1011-372X → ACNP
Volume
74
Issue
1-2
Year of publication
2001
Pages
81 - 83
Database
ISI
SICI code
1011-372X(2001)74:1-2<81:IITEHO>2.0.ZU;2-A
Abstract
The modification of some rare earth metal cations to polymer-stabilized Pt colloidal clusters leads to significant increase in both the ee and the act ivity in the homogeneous enantioselective hydrogenation of methyl pyruvate to (R)-(+)-methyl lactate. Compared to ee (72.5%) in the absence of rare ea rth cations, the highest ee (88.0%) in ethanol solvent is obtained by addin g a suitable amount of Yb3+ into the Pt colloidal cluster catalyst. The mod ification effect of rare earth cations is also effective in other alcohol a nd water solvents.