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چکیده
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In recent years, preparation of Benzimidazoles has been an interesting subject. Benzimidazole and its derivatives have been used as the antiulcerative esomeprazole (1) . Benzimidazoles are remarkably effective compounds against various strains of microorganisms. N-Bromo compounds are inexpensive and nonhazardous reagents and also they are widely applicable in industrial processes for the synthesis of drugs, pharmaceuticals and agrochemicals (2,3) . This method has some advantages including easy handling, short reaction times, high yield and simplicity of the product isolation (2,3) . In this work, Poly(N˓N´-dibromo-N˓N´–bis(4-(bromo(methyl)amino)phenyl) naphthalene- 2˓7-disulfonamide) catalyst was used for the synthesis of Benzimidazoles derivatives by the condensation reaction between O-phenylenediamine and various aldehydes at 80◦C under solvent-free conditions .
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