ChemInform Abstract: 3‐Azidothieno[2,3‐b]pyridine Thermolysis as a Route to Novel peri‐Anellated Heterocyclic Derivatives — Benzo(furo)thieno[2,3,4‐ij]‐2,7‐naphthyridines.

Abstract

Various title compounds (V) and (IX) are obtained by thermolysis of alkyl(aryl) 3‐azidothieno[2,3‐b]pyridine‐2‐carboxylates containing an aryl or heteroaryl substituent at position C‐4 of the thienopyridine core (IV) and (VIII).