Enantioselective hydrogenation of pyrrolidine-2,3,5-triones over the Pt–cinchonidine system
作者:A Szabo、N Künzle、T Mallat、A Baiker
DOI:10.1016/s0957-4166(98)00499-6
日期:1999.1
1- and I-Substituted pyrrolidine-2,3,5-triones 5, 6 and 9 have been synthesized and hydrogenated to 3-hydroxy derivatives 10-12 with 17-91% ee using a 5 wt% Pt/Al2O3 catalyst in the presence of small amounts of cinchonidine. The influence of substituents on the enantioselectivity is discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis and Properties of Oxazolidinediones and Pyrrolidinetriones