Heterogeneous Enantioselective Hydrogenation of Ethyl Pyruvate Catalyzed by Cinchona-Modified Pt Catalysts: Effect of Modifier Structure
作者:H. U. Blaser、H. P. Jalett、W. Lottenbach、M. Studer
DOI:10.1021/ja003259q
日期:2000.12.1
structure of chiral modifiers derived from natural cinchona alkaloids on the enantioselectivity and rate of the Pt/Al2O3-catalyzed hydrogenation of ethylpyruvate was investigated. The influence of the following structural elements was studied: the cinchonidine versus the cinchonine backbone; effect of the nature and the size of substituents attached to C9; effect of partial hydrogenation of the quinoline