Comparison of Ullmann/RCM and Ullmann/Bis-hydrazone Coupling Reactions; New Access to Benzodithiophenes for Dye-Sensitized Solar Cell and Thiahelicene Applications

G. Stephenson, Silvia Cauteruccio, Julien Doulcet

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The use of CuTC (Liebeskind’s catalyst), followed by methylenation and ring-closing metathesis, or bis-hydrazone coupling reactions is described. This establishes an alternative non-photochemical synthesis of the strategically important 1,2-b:4,3-b' BDT regioisomer which previously has been under-used in applications such as dye-sensitized solar cells and nonlinear optics because of the difficulty of synthesis on a large scale.
Original languageEnglish
Pages (from-to)701-707
Issue number05
Publication statusPublished - 2014


  • benzodithiophene
  • Liebeskind’s catalyst
  • bis-hydrazone coupling
  • alkene metathesis
  • non-photochemical
  • synthesis

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