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Oxidative Coupling of Alcohols and Amines over Bimetallic Unsupported Nanoporous Gold: Tailored Activity through Mechanistic Predictability
Author(s) -
Wichmann Andre,
Bäumer Marcus,
Wittstock Arne
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201402843
Subject(s) - nanoporous , bimetallic strip , catalysis , dimethylamine , chemistry , methanol , oxidative coupling of methane , turnover number , coupling reaction , phase (matter) , chlorine , organic chemistry
Abstract An unsupported nanoporous gold catalyst is employed for the direct coupling of primary alcohols and amines to the corresponding amides in the liquid phase. Among others, the reaction of methanol and dimethylamine to the industrially relevant dimethylformamide proceeds smoothly at 40 °C (turnover frequency≈40 h −1 ). The activation of molecular oxygen is identified as a key parameter. Doping of the unsupported catalyst by an admetal (Ru, Ag) is used to increase the activity of the catalyst considerably for this reaction (turnover frequency≈100 h −1 ).