ENANTIOFACE DIFFERENTIATING (ASYMMETRIC) HYDROGENATION OF METHYL ACETOACETATE WITH MODIFIED RANEY NICKEL

Autor:	Hiroshi Ozaki, Yoshiharu Izumi, Akira Tai
Rok vydání:	1974
Předmět:	Methyl acetoacetate Chemistry Asymmetric hydrogenation Inorganic chemistry Noyori asymmetric hydrogenation General Chemistry Activation energy Raney nickel Catalysis chemistry.chemical_compound Yield (chemistry) Reagent Organic chemistry sense organs
Zdroj:	Chemistry Letters. 3:935-938
ISSN:	1348-0715 0366-7022
DOI:	10.1246/cl.1974.935
Popis:	Rate studies of the liquid phase hydrogenation of methyl acetoacetate were carried out on the Raney nickel catalyst modified with optically active substances. The results are as follows ; 1) Both the optical yield of product and the rate of hydrogenation were controlled by the nature of modifying reagents but no direct correlation was present between them. 2) The apparent activation energy of hydrogenation was not varied with the change of modifying reagents. The most probable rate-controlling process of hydrogenation was the surface reaction. The optical yield of product was not explained by the simple kinetic controlled differentiation. Details of differentiating process still remained equivocal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9170919a3aec1e3c9bb37274d8a0ed93 https://doi.org/10.1246/cl.1974.935 Zobrazit plný text záznamu