Synthesis, Characterization and Catalytic Activity of a Tungsten(VI) Amino Triphenolate Complex

Synthesis, Characterization and Catalytic Activity of a Tungsten(VI) Amino Triphenolate Complex ity of a novel tungsten(VI) amino triphenolate complex have been investigated. In particular, a tungsten(VI) amino triphenolate complex has been synthesized and tested in the oxidation of sulfides and cyclooctene, using hydrogen per - oxide as terminal oxidant. The catalyst has proved to be air and water tolerant, also showing a good efficiency in terms of yields and selectivity. Moreover, an upgrade of our pre- vious ligand synthesis is herein reported. The new devel- oped procedure allows to obtain the triphenolamine in large scale without the use of chromatography for the intermedi- ates purification. Keywords Tungsten · Epoxidation · Sulfoxidation · Polydentate ligand · Hydrogen Peroxide 1 Introduction The use of W(VI) based catalysts for the epoxidations of ole- fin dates back to the late 1940s and since that time has proved Electronic supplementary material The online version of this article (doi:10.1007/s10562-017-2144-z) contains supplementary to be useful for the oxidation of a variety of carbon–carbon material, which is available to authorized users. double bonds [1–4]. Heterogeneous W(VI) compounds, 2− W-oxido cluster complexes, and tungstate W O deriva- * Cristiano Zonta tives gained significant interest in oxidation catalysis, mainly with H O as oxidizing agent [5–8]. In this specific case, it is 2 Catalysis Letters Springer Journals

Synthesis, Characterization and Catalytic Activity of a Tungsten(VI) Amino Triphenolate Complex

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Copyright © 2017 by Springer Science+Business Media, LLC
Chemistry; Catalysis; Industrial Chemistry/Chemical Engineering; Organometallic Chemistry; Physical Chemistry
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