Weclawski, M.K.M.K.WeclawskiMeiling, T.T.T.T.MeilingLeniak, A.A.LeniakCywinski, P.J.P.J.CywinskiGryko, D.T.D.T.Gryko2022-03-052022-03-052015https://publica.fraunhofer.de/handle/publica/24279310.1021/acs.orglett.5b020422-s2.0-84941002575Previously unknown, vertically linked heterocycles comprised of benzofuran and iminocoumarin moieties have been synthesized directly from 1,5-dibenzoyloxyanthraquinone and arylacetonitriles via double Knoevenagel condensation followed by formal HCN elimination. The structural assembly of fully conjugated, electron-rich benzofuran and electron-deficient iminocoumarin is responsible for the strongly polarized nature of these heterocycles which translates into their polarity-sensitive fluorescence.en668journal article