title: A novel class of extended pi-conjugated systems: one-pot synthesis of bis-3-aminoimidazo[1,2-a]pyridines, pyrimidines and pyrazines.
abstract: Bis-3-aminoimidazo[1, 2-a] pyridines, pyrimidines and pyrazines as extended pi-conjugated systems were synthesized for the first time by a novel pseudo five-component condensation of 2-aminopyridine pyrimidines and pyrazines derivatives with terephthalaldehyde or isoph-thalaldehyde and isocyanides in the presence of p-toluene-sulfonic acid in methanol.
authors.affiliation: Department of Chemistry, Shahid Beheshti University, P.O. Box 19396-4716, Tehran, Iran. a-shaabani@cc.sbu.ac.ir
authors.forename: Ahmad
authors.initials: A
authors.lastname: Shaabani
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Soleimani
authors.forename: Ali
authors.initials: A
authors.lastname: Maleki
authors.forename: Jafar
authors.initials: J
authors.lastname: Moghimi-Rad
mesh_terms: D000447:Aldehydes / Q000737:chemistry; D001557:Benzenesulfonates / Q000737:chemistry; D002384:Catalysis; D003486:Cyanides / Q000737:chemistry; D000432:Methanol / Q000737:chemistry; D011719:Pyrazines / Q000138:chemical synthesis* / Q000737:chemistry; D011725:Pyridines / Q000138:chemical synthesis* / Q000737:chemistry; D011743:Pyrimidines / Q000138:chemical synthesis* / Q000737:chemistry; D013696:Temperature
chemical_list: D000447:Aldehydes; D001557:Benzenesulfonates; D003486:Cyanides; D011719:Pyrazines; D011725:Pyridines; D011743:Pyrimidines; C029501:4-toluenesulfonic acid; D000432:Methanol