Heterogeneous Enantioselective Hydrogenation of Aromatic Ketones Catalyzed by Rh Nanoparticles Immobilized in Ionic Liquid
Sign Up to like & getrecommendations! Published in 2019 at "Catalysis Letters"
DOI: 10.1007/s10562-019-02768-w
Abstract: Rhodium nanoparticles (Rh NPs) stabilized by natural cinchona alkaloids were synthesized in imidazolium-based ionic liquids using H2 as the reductant. Characterization showed well-dispersed Rh NPs of about 1.96 nm (TEM and HRTEM) and confirmed the ionic… read more here.
Keywords: enantioselectivity; ionic liquid; chemoselectivity; hydrogenation ... See more keywords
Ru-Catalyzed Enantioselective Hydrogenation of 2-Pyridyl-Substituted Alkenes and Substrate-Mediated H/D Exchange.
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DOI: 10.1021/acscatal.1c05061.s001
Abstract: A highly efficient and enantioselective asymmetric hydrogenation catalyzed by Ru-DTBM-segphos is reported for a broad range of pyridine-pyrroline tri-substituted alkenes. Kinetic, spectroscopic, and computational studies suggest that addition of H2 is rate-determining and that alkene… read more here.
Keywords: hydrogenation; exchange; hydrogenation pyridyl; enantioselective hydrogenation ... See more keywords
Facile access to chiral chromanone-2-carboxylic acids enabled by rhodium-catalyzed chemo- and enantioselective hydrogenation.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc00589a
Abstract: Rh-catalyzed highly chemo- and enantioselective hydrogenation of chromone-2-carboxylic acids was successfully established for the first time, providing a wide range of enantiopure chromanone-2-carboxylic acids with excellent results (up to 97% yield and 99% ee) and… read more here.
Keywords: enantioselective hydrogenation; carboxylic acids; chromanone carboxylic; chemo enantioselective ... See more keywords