Journal
CATALYSIS TODAY
Volume 152, Issue 1-4, Pages 61-65Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2009.07.105
Keywords
Bronsted-acid catalysis; Heterogeneous catalysis; Zirconium phosphate; Aza-Diels-Alder reaction; Solvent-free conditions
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The aza-Diels-Alder reaction between benzaldimines 1 and Danishefsky's diene in solvent-free conditions is reported for the first time. The reaction occurs rapidly at 30 degrees C and is catalyzed by porous alpha-zirconium hydrogen phosphate (p-alpha ZrP) in the presence of sodium dodecyl sulfate (SDS). The yields were excellent. The recycling of the catalyst has also been investigated. (C) 2009 Elsevier B.V. All rights reserved.
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