Green Synthesis of Polycyclic Benzimidazole Derivatives and Organic Semiconductors
- 24 August 2011
- journal article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 13 (18), 4882-4885
- https://doi.org/10.1021/ol201973w
Abstract
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.Keywords
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