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The DBU-H2O complex as a new catalyst for aldol condensation reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
53014 46896 2008 5 PDF Available
Title
The DBU-H2O complex as a new catalyst for aldol condensation reactions
Abstract

Finding new Brønsted-type basic catalysts that can perform condensation reactions of interest to fine chemistry with good activities and selectivities is a constant challenge. In this communication we report the activity of the DBU-H2O system as a basic catalyst for aldol condensation reactions. Diazabicyclo [5.4.0] undec-7-ene (DBU) is a non-nucleophilic, strong tertiary amine base that is widely used in organic synthesis. We demonstrate that DBU, which has Lewis basic properties is inactive for aldol condensation reactions. However when it reacts with equimolar amounts of water it transforms towards a second resonance structure with Brønsted basic properties and therefore, high activity for these reactions. Besides, the DBU-H2O complex is found to be very efficient with reusability for several times.

Keywords
DBU; Base catalysts; Aldol condensation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issues 11–12, 30 June 2008, Pages 2090–2094
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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