Applied Chemical Engineering

Morphology based catalytic oxidation of phenyl propyne into 1,2-diketones, aldehyde and acid using Cu(II) complex

Prashant Kaushik

Department of Chemistry, Gurukula Kangri (Deemed to be University)

Nidhi Malik

School of Engineering and technology, The Northcap University

Prashant Tevatia

Department of Chemistry, Gurukula Kangri (Deemed to be University)

Vinod Kumar

Special Centre for Nano Sciences, Jawaharlal Nehru University

Prasanta Kumar Sahu

Department of Chemistry, Shivaji College, University of Delhi

Ravinder Kumar

Department of Chemistry, Gurukula Kangri (Deemed to be University)

Keywords: N-methyl benzimidazolyl schiff base, copper complex, Heterogeneous catalysis, phenylproyne

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Abstract

Aldehyde, 1,2-diketones, and acid were prepared by copper-catalyzed oxidation of phenyl propyne, using t-BuOOH as the oxidant, heterogeneously. Aldehyde is formed as major product under neutral conditions. Under mild conditions, catalysis was carried out using catalytic amounts of [Cu(L)Br] with N-methyl benzimidazolyl schiff base ligand and stoichiometric amounts of oxidant in CH₃CN. The several property of catalyst was characterized by using UV-Vis, FT-IR, PXRD, CV and Electron paramagnetic resonance techniques. Comparative SEM measurement of catalyst before and after the catalysis shows that the morphology and size of rods affect the catalytic efficiency. The percentage yields of products were determined by GC-MS.

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