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Oxidation of phenyl propyne catalyzed by copper(II) complexes of a benzimidazolyl schiff base ligand: Effect of acid/base, oxidant, surfactant and morphology.

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Title: Oxidation of phenyl propyne catalyzed by copper(II) complexes of a benzimidazolyl schiff base ligand: Effect of acid/base, oxidant, surfactant and morphology.
Authors: Kumar, Ravinder1, Mathur, Pavan1 pavanmat@yahoo.co.in
Source: Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy. Feb2015 Part B, Vol. 136, p818-823. 6p.
Subjects: Copper catalysts, Phenyl compounds, Oxidation, Complex compounds, Benzimidazoles, Schiff bases, Ligands (Chemistry), Surface active agents
Abstract: Copper(II) complexes with a new N -Substituted benzimidazolyl schiff base ligand are used as catalyst for the oxidation of 1-phenyl propyne. The oxidation is carried out under mild conditions using stoichiometric amounts of oxidant and catalytic amounts of Cu(II) complex as catalyst. Effect of acid/base, oxidant, morphology and surfactant has been studied. Two major products of phenyl propyne oxidation are the α-diketonic product and a terminal aldehyde. Diketone is the major product under acidic conditions while aldehyde formation is highest under basic conditions. The maximum conversion is found with the NO 3 − bound complex. GC–MS is used to find the percentage yields of products. SEM and PXRD of the reused complexes as catalyst suggest that morphology affects the catalytic efficiency. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Copper(II) complexes with a new N -Substituted benzimidazolyl schiff base ligand are used as catalyst for the oxidation of 1-phenyl propyne. The oxidation is carried out under mild conditions using stoichiometric amounts of oxidant and catalytic amounts of Cu(II) complex as catalyst. Effect of acid/base, oxidant, morphology and surfactant has been studied. Two major products of phenyl propyne oxidation are the α-diketonic product and a terminal aldehyde. Diketone is the major product under acidic conditions while aldehyde formation is highest under basic conditions. The maximum conversion is found with the NO 3 − bound complex. GC–MS is used to find the percentage yields of products. SEM and PXRD of the reused complexes as catalyst suggest that morphology affects the catalytic efficiency. [ABSTRACT FROM AUTHOR]
ISSN:13861425
DOI:10.1016/j.saa.2014.09.099