Ionic liquids as a recyclable reaction medium for the Baylis-Hillman reaction

Authors
Rosa, JN Afonso, CAM Santos, AG
Citation
Jn. Rosa et al., Ionic liquids as a recyclable reaction medium for the Baylis-Hillman reaction, TETRAHEDRON, 57(19), 2001, pp. 4189-4193
Citations number
46
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON
ISSN journal
00404020 → ACNP
Volume
57
Issue
19
Year of publication
2001
Pages
4189 - 4193
Database
ISI
SICI code
0040-4020(20010507)57:19<4189:ILAARR>2.0.ZU;2-8
Abstract
The Baylis-Hillman reaction using 1,4-diazabicyclo[2.2.2]octane (DABCO) has been shown to be 33.6 times faster in the recyclable ionic liquid 1-n-buty l-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) than in acetonitril e. Low yields (14-20%) of adducts an obtained from aliphatic aldehydes and moderate to high yields (39-72%) from aromatic aldehydes. Recycling and reu se of the reaction medium was demonstrated. (C) 2001 Elsevier Science Ltd. All rights reserved.