Synthesis and characterization of isomeric α,α′-bithienyls with β-methylsulfanyl substituents

Abstract

The three isomeric bithienyls, 1, 2 and 3, formally related to the dimerization of 3-(methylsulfanyl)-thiophene, have been synthesized by the metal-catalysed coupling between a metallated and a halogenated derivative of thiophene of suitable structure. The 1H and 13C NMR data are discussed.