Aerobic Oxidation of Alcohols with MoS2/Ta3N5 Nanocomposites

Yasuhiro Uozumi; Hiroaki Tsuji

doi:10.1055/s-0032-1318049

Synfacts, Inhaltsverzeichnis

Synfacts 2013; 9(2): 0221
DOI: 10.1055/s-0032-1318049

Polymer-Supported Synthesis

Aerobic Oxidation of Alcohols with MoS₂/Ta₃N₅ Nanocomposites

Rezensent(en):

Yasuhiro Uozumi

,

Hiroaki Tsuji

Abstract

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Gao Q, * Giordano C, Antonietti M. Max Planck Institute of Colloids and Interfaces, Potsdam, Germany and Jinan University, Guangzhou, P. R. of China
Biomimetic Oxygen Activation by MoS₂/Ta₃N₅ Nanocomposites for Selective Aerobic Oxidation.

Angew. Chem. Int. Ed. 2012;
51: 11740-11744

Key words

MoS₂/Ta₃N₅ nanocomposites - aerobic oxidation - alcohols - amines - sulfides - alkenes

Significance

Ta₃N₅ nanoparticles partly coated with a MoS₂ layer (MoS₂/Ta₃N₅ NPs) were prepared by hydrothermal treatment of Ta₃N₅ NPs with (NH₄)₆Mo₇O₂₄ in the presence of thiourea (eq. 1). MoS₂/Ta₃N₅ NPs catalyzed the aerobic oxidation of alcohols under oxygen (1 atm) to give the corresponding aldehydes or ketones in up to 99% conversion with 99% selectivity (13 examples, eq. 2).

Comment

MoS₂/Ta₃N₅ NPs were characterized by SEM, TEM, XRD, ICP-AES and elemental analysis. The catalyst also promoted the aerobic oxidation of amines, sulfides, and alkenes to afford the corresponding imines, sulfoxides, and epoxides (eq. 3). In the oxidation of benzyl alcohol, the catalytic activity of MoS₂/Ta₃N₅ NPs was superior to that of Ta₃N₅NPs and MoS₂.

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