... CAS. 8 J. Gripenberg, Acta Chem. ... of hetaryl-substituted benzoxazolesviaoxidative cyclization of phenolic schiff's bases, Journal of Heterocyclic Chemistry, 2008, 45 ... Acid-catalyzed solvent-free synthesis of 2-arylbenzimidazoles under microwave irradiation, Journal of Molecular ...