SYNTHESIS AND CHARACTERIZATION OF A NEW CHIRAL POLYUREA-BASED CATALYST

Citation
B. Dunjic et al., SYNTHESIS AND CHARACTERIZATION OF A NEW CHIRAL POLYUREA-BASED CATALYST, Journal of applied polymer science, 59(8), 1996, pp. 1255-1262
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Polymer Sciences
ISSN journal
0021-8995
Volume
59
Issue
8
Year of publication
1996
Pages
1255 - 1262
Database
ISI
SICI code
0021-8995(1996)59:8<1255:SACOAN>2.0.ZU;2-K
Abstract
A series of chiral poly(urea)s was synthesized by solution polyadditio n. The polymers are characterized by NMR, FTIR, DSC, viscosimetry, and microanalysis. After deposition of the rhodium, the insoluble chiral polymers were used as catalysts in the reduction of acetophenone by hy drogen transfer. The influence of the structure of the polymers on the catalytic activity and selectivity was investigated. The enantiomeric excesses (e.e.) obtained were up to 60%, and the polymeric catalysts were reused without loss of activity and selectivity. (C) 1996 John Wi ley & Sons, Inc.