Methodologies for the synthesis of 3,4-ethylenedithiothiophene (EDTT) and its derivatives for use as semiconductor materials

In contrast to the wide ranging study of EDOT, its derivatives, and polymer PEDOT that followed its commercialisation by the Bayer research laboratory, far fewer investigations have been devoted to the sulfur analog 3,4-ethylenedithiathiophene (EDTT) 13. To the best of our knowledge, there is no reported review highlighting the methodologies available for the synthesis of EDTT and its derived compounds. Hence, this review sumarises the main methods that have been reported for the synthesis EDTT and its chemistry.