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Synfacts 2014; 10(7): 0765
DOI: 10.1055/s-0034-1378312
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Oxidation of Secondary Alcohols with UiO-66-Cr MOF Catalyst

Rezensent(en):
Yasuhiro Uozumi
,
Yoichi M. A. Yamada
,
Heeyoel Baek
Fei H, Sin J, Meng YS, Adelhardt M, Sutter J, Meyer K, Cohen SM * University of California, San Diego, USA and Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
Reusable Oxidation Catalysis Using Metal-Monocatecholato Species in a Robust Metal-Organic Framework.

J. Am. Chem. Soc. 2014;
136: 4965-4973
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Publikationsverlauf

Publikationsdatum:
16. Juni 2014 (online)

 
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Key words

metal-organic framework - chromium-monocatecholato moieties - oxidation - heterogeneous catalysis

Significance

The metal-organic framework 1, UiO-66-CrCAT, was prepared from zirconium(IV)-based UiO-66 (UiO = University of Oslo) and aqueous K2CrO4 under acidic conditions of pH 3. The oxidation reaction of secondary alcohols was carried out with TBHP in the presence of UiO-66-CrCAT (1 mol% chromium) in chlorobenzene (method A) or under solvent-free conditions (method B) to afford the corresponding ketones.


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Comment

The catalyst was characterized by SEM, XPS, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure ­(EXAFS) spectroscopy, BET, XRD, and ICP-OES analyses. The catalyst was recovered by filtration and reused four times without significant loss of the catalytic activity and without leaching of chromium from the catalyst in the oxidation of 2-heptanol. Further, reactions of sec-benzylic alcohols proceeded with H2O2 in acetonitrile (method C).


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