Journal
CHEMCATCHEM
Volume 12, Issue 22, Pages 5743-5749Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.202001041
Keywords
Metal-organic framework; Mott-Schottky catalyst; NiO@Ni nanoparticles; heterogeneous catalysis; amidation reaction
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Funding
- CSIR, Govt. of India [01(2977)/19/EMR-II]
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Here we report a facile method for the synthesis of nickel oxide-nickel (NiO@Ni) Mott-Schottky catalyst employing metal-organic framework (MOF) as the precursor. A direct amidation protocol of aldehydes with amines has been optimized under mild conditions using NiO@Ni Mott-Schottky catalyst and it shows far better catalytic activity than the NiO-Ni nanoparticles prepared from simple Ni(2+)salt under similar reaction conditions. The heterogeneous catalyst is robust, recyclable and efficient to provide comparable yield to costly ligand-based homogeneous Ni catalysts. The scope of the reaction protocol has been explored with variably substituted substrates. The reaction initiates by homolytic cleavage of peroxide and proceeds through radical mechanism.
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