A non-photochemical route to synthesize simple benzo[1,2-b:4,3-b′]dithiophenes: FeCl3-mediated cyclization of dithienyl ethenes

Silvia Cauteruccio, Davide Dova, Claudia Graiff, Claudio Carrara, Julien Doulcet, G. Richard Stephenson, Emanuela Licandro

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The FeCl3-mediated cyclization of a,a0-disubstituted Z-alkenes 1 is reported as a general and non-photochemical route to synthesize benzo[1,2-b:4,3-b0]dithiophene (BDT) derivatives 2, achievable in good yields starting from cheap and easily available materials. The influence of the temperature and the nature of the substituents on the scope and limitations of this methodology is also reported.
Original languageEnglish
Pages (from-to)2241-2244
Number of pages4
JournalNew Journal of Chemistry
Issue number6
Publication statusPublished - 1 Jan 2014


  • BDT
  • benzo[1,2-b:4,3-b0]dithiophene
  • iron(III) chloride
  • cyclisation
  • synthesis

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