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Synfacts 2010(11): 1313-1313  
DOI: 10.1055/s-0030-1258824
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Facile Oxidations under Flow Conditions in Fixed-Bed Reactors

Contributor(s):Yasuhiro Uozumi, Yoichi M. A. Yamada, Maki Minakawa
J. Wegner, S. Ceylan, C. Friese, A. Kirschning*
Leibniz Universität Hannover and PIT - Plasma Induction Technology, Düsseldorf, Germany
Inductively Heated Oxides Inside Microreactors - Facile Oxidations under Flow Conditions
Eur. J. Org. Chem.  2010,  4372-4375  
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Publication History

Publication Date:
21 October 2010 (online)

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Key words

inductive heating - oxidation - flow conditions - metal oxides

Significance

Flow oxidation with inductive heating inside flow reactors was described. The oxidation reactions of various substrates were carried out in glass flow reactors charged with superparamagnetic nanoparticles and solid oxidants, which were exposed to a magnetic field with an inductive frequency of 25 kHz at 40 psi backpressure to afford the corresponding products.

Comment

The flow oxidation of substrates 9, 11 or 19 was performed by using a PEEK (polyether ether ketone) reactor at 100 psi backpressure. The authors previously reported the first application of ferromagnetic materials like magnetic nanoparticles Fe3O4 coated with a silica shell (10-40 nm) as heating media in flow reactions (Angew. Chem. Int. Ed. 2008, 47, 8950).

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