title: One-pot synthesis of tetrazolo[1,5-a]pyrimidines under solvent-free conditions.
abstract: A series of 5,7-diaryl-4,7-dihydrotetrazolo [1,5-a]pyrimidines and 5-methyl-7-aryl-4,7-dihydrotetrazolo [1,5-a]pyrimidine-6-carboxylates were obtained from aryl aldehydes, 2-aminotetrazole, substituted acetophenones, or ethyl acetoacetate in good to excellent yields by proceeding through a simple, mild, and efficient procedure utilizing N,N,N,N-tetrabromobenzene-1,3-disulfonamide as catalyst.
authors.affiliation: Department of Organic Chemistry, Faculty of Chemistry, Bu-Ali-Sina University, 65174 Hamedan, Iran. rgvaghei@yahoo.com
authors.forename: Ramin
authors.initials: R
authors.lastname: Ghorbani-Vaghei
authors.forename: Zahra
authors.initials: Z
authors.lastname: Toghraei-Semiromi
authors.forename: Mostafa
authors.initials: M
authors.lastname: Amiri
authors.forename: Rahman
authors.initials: R
authors.lastname: Karimi-Nami
mesh_terms: D000090:Acetoacetates / Q000737:chemistry; D000098:Acetophenones / Q000737:chemistry; D000447:Aldehydes / Q000737:chemistry; D002264:Carboxylic Acids / Q000737:chemistry; D002384:Catalysis; D011743:Pyrimidines / Q000138:chemical synthesis*; D013449:Sulfonamides / Q000737:chemistry; D013777:Tetrazoles / Q000138:chemical synthesis*
chemical_list: D000090:Acetoacetates; D000098:Acetophenones; D000447:Aldehydes; D002264:Carboxylic Acids; D011743:Pyrimidines; D013449:Sulfonamides; D013777:Tetrazoles; C024840:ethyl acetoacetate