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Dioxomolybdenum(VI) and -Tungsten(VI) Amino Bisphenolates as Epoxidation Catalysts

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Peuronen, A., & Lehtonen, A. (2016). Dioxomolybdenum(VI) and -Tungsten(VI) Amino Bisphenolates as Epoxidation Catalysts. Topics in Catalysis, 59(13), 1132-1137. https://doi.org/10.1007/s11244-016-0632-9
Published in
Topics in Catalysis
Authors
Peuronen, Anssi |
Lehtonen, Ari
Date
2016
Discipline
Epäorgaaninen ja analyyttinen kemiaInorganic and Analytical Chemistry
Copyright
© Springer Science+Business Media New York 2016. This is a final draft version of an article whose final and definitive form has been published by Springer. Published in this repository with the kind permission of the publisher.

 
Low-cost metallate salts Na2MO4·2H2O (M = molybdenum, tungsten) react with a tridentate amine bisphenol bis(2-hydroxy-3-tert-butyl-5-methylbenzyl)methylamine (H2ONOtBu) under ambient conditions in acidic methanol solutions. The reactions lead to the formation of isostructural dioxo complexes [MO2(ONOtBu)(MeOH)]·MeOH in convenient yields. Spectral data as well as X-ray analyses reveal these complexes to be isostructural. Both compounds were tested as catalysts for epoxidation of olefins using cis-cyclooctene, cyclohexene, norbornene and styrene as substrates and tert-butyl hydroperoxide and hydrogen peroxide as oxidants. The molybdenum complex catalyses selectively the oxidation of cis-cyclooctene and norbornene to corresponding epoxides, whereas oxidation of cyclohexene and styrene lead low yields as the epoxidations were associated with the formation of other oxidation products. Corresponding tungsten complex shows lower activity for epoxidation of norbornene and practically no activity for other olefins. Both complexes can also catalyse the conversion of benzoin to benzil using dimethyl sulphoxide as an oxidant, while the molybdenum complex shows higher activity. ...
Publisher
Springer New York LLC
ISSN Search the Publication Forum
1022-5528
Keywords
molybdenum complexes tungsten complexes tridentate ligands epoxidation katalyysi
DOI
https://doi.org/10.1007/s11244-016-0632-9
URI

http://urn.fi/URN:NBN:fi:jyu-201704121981

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/26085852

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  • Matemaattis-luonnontieteellinen tiedekunta [4426]

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