Microwave-assisted peroxidative oxidation of toluene and 1-phenylethanol with monomeric keto and polymeric enol aroylhydrazone Cu(II) complexes

Sutradhar, Manas; Alegria, Elisabete; Roy Barman, Tannistha; Scorcelletti, Francesco; Guedes Da Silva, M. Fátima C.; Fatima, C.; Pombeiro, Armando

http://hdl.handle.net/10400.21/7528

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Authors

Sutradhar, Manas

Alegria, Elisabete

Roy Barman, Tannistha

Scorcelletti, Francesco

Guedes Da Silva, M. Fátima C.

Fatima, C.

Pombeiro, Armando

Abstract(s)

Cu(II) complexes in two different tautomeric forms (keto and enol) derived from the aroylhydrazone Schiff base 2-hydroxy(2-hydroxybenzylidene)benzohydrazide (H2L) have been synthesized and characterized by elemental analysis, IR spectroscopy, ESI-MS and single crystal X-ray crystallography. While the compound with the enol form of the ligand exists as the 1D polymer [Cu(kappa KNOO',2 kappa O',3 kappa O"-L)](n) (1), that with the keto form of the ligand occurs as the monomer [Cu(KNOO'-HL)CI(CH3OH)] (2). Both complexes act as good catalysts for the microwave-assisted peroxidative oxidation of toluene and 1-phenylethanol with tert-butyl hydroperoxide. Complex 2 exhibits the highest activity in both reactions, leading selectively to,a maximum product yield of 39 and 92%, respectively.

Keywords

Cu(II) complexes Aroylhydrazone X-ray structure Oxidation of toluene Microwave-assisted oxidation

URI

http://hdl.handle.net/10400.21/7528

Citation

SUTRADHAR, Manas [et al] - Microwave-assisted peroxidative oxidation of toluene and 1-phenylethanol with monomeric keto and polymeric enol aroylhydrazone Cu(II) complexes. Molecular Catalysis. ISSN 2468-8231. Vol. 439 (2017), pp. 224-232