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Influence of support acid–base properties on the platinum-catalyzed enantioselective hydrogenation of activated ketones

✍ Scribed by Fatos Hoxha; Bjoern Schimmoeller; Zdenek Cakl; Atsushi Urakawa; Tamas Mallat; Sotiris E. Pratsinis; Alfons Baiker

Book ID
113686826
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
728 KB
Volume
271
Category
Article
ISSN
0021-9517

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Inversion of Enantioselectivity during t
Inversion of Enantioselectivity during the Platinum-Catalyzed Hydrogenation of an Activated Ketone
✍ Matthias von Arx; Tamas Mallat; Alfons Baiker 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 89 KB

Two competing reaction pathways, which lead to opposite enantiomers, occur in the hydrogenation of 1 over chirally modified platinum, as revealed by catalytic and NMR spectroscopic experiments: the fast reduction of the ketoform 1 a (minor species) and the slow hydrogenolysis of the hydrate 3 (major