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J. F. Zhou, G. X. Gong, X. J. Sun and Y. L. Zhu, “Facile Method for One-Step Synthesis of 2,4,5-Triarylimida- zoles under Cata-lyst-Free, Solvent-Free, and Microwave-Irradiation Conditions,” Synthetic Communications, Vol. 40, 2010, pp.1134-1141. doi:10.1080/00397910903043025

has been cited by the following article:

• TITLE: Sulfuric Acid Immobilized on Silica Gel as Highly Efficient and Heterogeneous Catalyst for the One-Pot Synthesis of 2,4,5-Triaryl-1H-imidazoles

  AUTHORS: Behrooz Maleki, Hossein Keshvari Shirvan, Fereshteh Taimazi, Elahe Akbarzadeh

  KEYWORDS: 2, 4, 5-Trisubstituted Imidazoles; Solvent-Free Synthesis; Multicomponent Reaction; Silica-Supported Sulfuric Acid; Heterogeneous Catalyst

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.2 No.1, March 15, 2012

  ABSTRACT: Application of sulfuric acid immobilized on silica gel as an efficient and benign catalyst has been explored in the syn-thesis of 2,4,5-Triaryl-1H-imidazoles via condensation reaction of benzil or benzoin, aldehyde and ammonium acetate. The key advantages of this process are high yields, cost effectiveness of catalyst, easy work-up, purification of products by non-chromatographic method and the reusability of the H2SO4.SiO2 catalyst.