Abstract

Barium sulfate nano-particles (BaSO4 nano-particles) has been prepared form the homogeneous precipitation of BaCl2 with triethylammonium hydrogen sulfate in aqueous media at room temperature. The prepared nano-particles has been used for the preparation of 2,4,5-triaryl and N-aryl(alkyl)-2,4,5-triaryl imidazoles in high yields under thermal conditions with easy catalyst separation and possible reusability of the catalyst.

Keywords: 2, 4, 5-triaryl imidazole, N-aryl(alkyl)-2, 4, 5-triaryl imidazole, benzil, Barium sulfate, nano-particles, triethylammonium hydrogen sulfate, Barium chloride