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vol.61 issue3SYNTHESIS OF 1-ARYL-6,6-DIMETHYL-2-PHENYL-6,7-DIHYDRO-1H-INDOL-4(5H)-ONES BY TWO STEPS, IN A THREE-COMPONENT REACTIONSTUDY OF PHYSICAL AND CHEMICAL CHARACTERIZATION OF NANOCOMPOSITE POLYSTYRENE / GRAPHENE OXIDE HIGH ACIDITY CAN BE APPLIED IN THIN FILMS author indexsubject indexarticles search
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Journal of the Chilean Chemical Society

On-line version ISSN 0717-9707

Abstract

MALEKI, ALI  and  ALIREZVANI, ZAHRA. A HIGHLY EFFICIENT SYNTHESIS OF SUBSTITUTED IMIDAZOLES VIA A ONE-POT MULTICOMPONENT REACTION BY USING UREA/HYDROGEN PEROXIDE (UHP). J. Chil. Chem. Soc. [online]. 2016, vol.61, n.3, pp.3116-3119. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072016000300022.

A simple, versatile and highly efficient synthesis of 2,4,5-trisubstituted imidazoles by a condensation reaction of benzil or benzoin, aldehydes and ammonium acetate in the presence of urea/hydrogen peroxide (UHP) as a mild and efficient molecular catalyst in refluxing ethanol is described. The present methodology offers several advantages such as green protocol, inexpensive catalyst, high-to-excellent yields, and simple and easy work-up procedure.

Keywords : Multicomponent reaction; imidazole; benzil; urea; hydrogen peroxide.

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