Reactions of polyhalogenopyridines. 11.* Synthesis of 3-hydroxy-4,6,7-trichloro-2-ethoxycarbonylthieno[3,2-c]pyridine
A derivative of thieno[3,2-c]pyridine was synthesized by intramolecular condensation of the substituents at positions 3 and 4 of the pyridine ring.