Publication Type Journal Article
Title Solvent-Free Microwave-Assisted Peroxidative Oxidation of Alcohols Catalyzed by Iron(III)-TEMPO Catalytic Systems
Authors Anirban Karmakar L.M.D.R.S. Martins M. Fátima C. Guedes da Silva Susanta Hazra Armando J.L. Pombeiro
Groups CCC
Journal CATALYSIS LETTERS
Year 2015
Month December
Volume 145
Number 12
Pages 2066-2076
Abstract The iron(III) complexes [H(EtOH)][FeCl2(L)(2)] (1), [H(2)bipy](1/2)[FeCl2(L)(2)].DMF (2) and [FeCl2(L)(2,2 -bipy)] (3) (L = 3-amino-2-pyrazinecarboxylate; H(2)bipy = doubly protonated 4,4 -bipyridine; 2,2 -bipy = 2,2 -bipyridine, DMF = dimethylformamide) have been synthesized and fully characterized by IR, elemental and single-crystal X-ray diffraction analyses, as well as by electrochemical methods. Complexes 1 and 2 have similar mononuclear structures containing different guest molecules (protonated ethanol for 1 and doubly protonated 4,4 -bipyridine for 2) in their lattices, whereas the complex 3 has one 3-amino-2-pyrazinecarboxylate and a 2,2 -bipyridine ligand. They show a high catalytic activity for the low power (10 W) solvent-free microwave assisted peroxidative oxidation of 1-phenylethanol, leading, in the presence of TEMPO, to quantitative yields of acetophenone [TOFs up to 8.1 x 10(3) h(-1), (3)] after 1 h. Moreover, the catalysts are of easy recovery and reused, at least for four consecutive cycles, maintaining 83 \% of the initial activity and concomitant rather high selectivity. 3-Amino-2-pyrazinecarboxylic acid is used to synthesize three new iron(III) complexes which act as heterogeneous catalysts for the solvent-free microwave-assisted peroxidative oxidation of 1-phenylethanol.
DOI http://dx.doi.org/10.1007/s10562-015-1616-2
ISBN
Publisher SPRINGER
Book Title
ISSN 1011-372X
EISSN 1572-879X
Conference Name
Bibtex ID ISI:000362730800008
Observations
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