ALKYLGUANIDINES AS CATALYSTS FOR THE TRANSESTERIFICATION OF RAPESEED OIL

Authors
SCHUCHARDT U VARGAS RM GELBARD G
Citation
U. Schuchardt et al., ALKYLGUANIDINES AS CATALYSTS FOR THE TRANSESTERIFICATION OF RAPESEED OIL, Journal of molecular catalysis. A, Chemical, 99(2), 1995, pp. 65-70
Citations number
25
Categorie Soggetti
Chemistry Physical
Journal title
Journal of molecular catalysis. A, Chemical → ACNP
ISSN journal
13811169
Volume
99
Issue
2
Year of publication
1995
Pages
65 - 70
Database
ISI
SICI code
1381-1169(1995)99:2<65:AACFTT>2.0.ZU;2-6
Abstract
The transesterification of rapeseed oil with methanol has been studied in the presence of eight substituted cyclic and acyclic guanidines an d compared with unsubstituted guanidine. The catalytic activity of the guanidines depends mainly on their intrinsic base strength. With a lo ng alkyl chain on the guanidine, no lipophilic effect is observed. The best catalyst found is commercial 1,5,7-triazabicyclo[4.4.0] dec-5-en e which, when used at 1 mol%, produces a 90% yield of methyl esters wi th 1 h of reaction time.