SILICA SUPPORTED RHODIUM METAL NANOPARTICLES STABILIZED WITH (-)-DIOP. EFFECT OF LIGAND CONCENTRATION AND METAL LOADING ON THE ENANTIOSELECTIVE HYDROGENATION OF KETONES

Journal of The Chilean Chemical Society

FIERRO, JOSÉ L.G¹  MELLA, CLAUDIO²  REYES, PATRICIO²  RUIZ, DORIS² 

[1] CSIC, Madrid, Spain;Universidad de Concepción, Concepción, Chile

关键词: chiral ligand;    (-;    )-;    DIOP;    enantioselective hydrogenation;    Rh/SiO2;    stabilized nanoparticles.;   

DOI  :  10.4067/S0717-97072012000400013

学科分类：化学（综合）

来源: Sociedad Chilena de Quimica

【 摘 要 】

Supported nanoparticles (NPs) in presence of chiral ligand (L) were synthesized for their use in enantioselective hydrogenation reactions. Catalysts were obtained by chemical reduction from rhodium chloride hydrate, RhCl3x3H2O, in presence of (-)-DIOP ligand ((4R,5R)-4,5-Bis(diphenylphosphino-methyl)-2,2-dimethyl-1,3-dioxolane) that allows to control NPs growing and to obtain solids having chiral surfaces. Chirally stabilized rhodium NPs on SiO2 were characterized using techniques such as: TEM, electron diffraction, EDS, nitrogen adsorption-desorption isotherms and XPS.

【 授权许可】

Unknown