Synthesis of some new derivatives of dithiene-and oxathienecarboxylic acids

Abstract

Substituted anilides of 1,4-dithiene- and oxathienecarboxylic acids were synthesized. It was shown that the reaction of 3-phenyl-1,4-dithi-2-ene-2-carboxyl chloride with 2-aminopyridines, depending on the base used and the reaction conditions, leads to the formation of N-[3′-phenyl-2′-(1′,4′-dithi-2′-en)ylcarbonyl]2-amino-pyridine and/or N,N′-bis[3-phenyl-2-(1,4-dithi-2-en)-ylcarbonyl]pyridonimine. The data of IR, UV, and PME spectroscopy were used to confirm the structure of the synthesized compounds.