Journal
APPLIED CATALYSIS A-GENERAL
Volume 374, Issue 1-2, Pages 189-193Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2009.12.008
Keywords
Hydroxyapatite; Water; Claisen-Schmidt condensation
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Funding
- Ministry of Higher Education of Morocco
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Hydroxyapatite was found to be a very efficient heterogeneous catalyst for the preparation of chalcone derivatives via Claisen-Schmidt condensation using microwave irradiation. The impact of water on the catalyst reactivity was studied and was thought to act as co-catalyst due to the high activation observed in its presence. To investigate the origin of this activation, different organic solvents of similar or higher microwave absorbance as/to water were also tested, and it was confirmed that water is acting as co-catalyst when combined with hydroxyapatite, making the process highly efficient. The catalyst was easily recovered and efficiently re-used. (c) 2009 Elsevier B.V. All rights reserved.
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