title: The application of poly(N, N'-dibromo-N-ethyl-benzene-1,3-disulfonamide) and N, N, N', N'-tetrabromobenzene-1,3-disulfonamide as catalysts for one-pot synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles and 1,5-benzodiazepines, and new reagents for synthesis of benzimidazoles.
abstract: Poly(N, N'-dibromo-N-ethyl-benzene-1, 3-di-sulfonamide) (PBBS) and N, N, N', N'- tetrabromobenzene-1,3-disulfonamide (TBBDA) are effective catalysts for the one-pot synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles and 1,5-benzodiazepines and new reagents for synthesis of benzimidazoles from o-phenylenediamine (OPDA) with aldehydes and ketones at room temperature with good to high yield.
authors.affiliation: Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali Sina University, 65174, Hamadan, Iran. rgvaghei@yahoo.com
authors.forename: Ramin
authors.initials: R
authors.lastname: Ghorbani-Vaghei
authors.forename: Hojat
authors.initials: H
authors.lastname: Veisi
mesh_terms: D001555:Benzene Derivatives / Q000138:chemical synthesis* / Q000737:chemistry; D001562:Benzimidazoles / Q000138:chemical synthesis* / Q000737:chemistry; D001569:Benzodiazepines / Q000138:chemical synthesis* / Q000737:chemistry; D055598:Chemical Phenomena; D008958:Models, Molecular; D013449:Sulfonamides / Q000737:chemistry*
chemical_list: D001555:Benzene Derivatives; D001562:Benzimidazoles; D013449:Sulfonamides; D001569:Benzodiazepines