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Cerium-containing MCM-41 catalyst for selective oxidative arene cross-dehydrogenative coupling reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
55184 47043 2012 10 PDF Available
Title
Cerium-containing MCM-41 catalyst for selective oxidative arene cross-dehydrogenative coupling reactions
Abstract

Cerium (IV)-mediated intermolecular direct biaryl coupling of aromatic tertiary amines and naphthol via dual CH bond activation has been reported. The new CC bond is formed regioselectively ortho to the amino and hydroxyl substituents under oxidative conditions to give substituted bifunctional amino naphthols. We report here the use of Ce-MCM-41 catalyst for the synthesis of these unsymmetrical biaryls via oxidative cross coupling under mild conditions. The catalyst was recovered by simple filtration and reused for several cycles with consistent activity.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (137 K)Download as PowerPoint slideHighlights► Ce-MCM-41 catalyst is stable and its activity is markedly increased with peroxide. ► The acidity of the MCM-41 is improved by the presence of cerium. ► The cross-coupling reaction was found to be both regio as well as chemo selective. ► The heterogenous catalyst was reused several times and no cerium leaching was observed.

Keywords
Ce-MCM-41; CH activation; Amino naphthols; Oxidative cross-coupling; Heterogeneous catalysis
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Cerium-containing MCM-41 catalyst for selective oxidative arene cross-dehydrogenative coupling reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 198, Issue 1, 30 December 2012, Pages 35–44
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
Any Questions? feel free to contact us