Green synthesis of polycyclic benzimidazole derivatives and organic semiconductors

Masashi Mamada, César Pérez-Bolívar, Pavel Anzenbacher

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)


Polycyclic benzimidazole derivatives, an important class of compounds in organic electronics and photovoltaics, were prepared using a solvent-free "green" process based on heating carboxylic acid anhydrides and arylene diamines in the presence of zinc acetate in the solid state. Products were isolated and purified directly by train sublimation of the crude reaction mixtures. The reaction conditions were optimized using various carboxylic acid anhydrides. Optical and electrochemical properties of these materials are also described.

Original languageEnglish
Pages (from-to)4882-4885
Number of pages4
JournalOrganic letters
Issue number18
Publication statusPublished - Sept 16 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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