Planar, Fluorescent Push–Pull System That Comprises Benzofuran and Iminocoumarin Moieties Marek K. Węcławski Till T. Meiling Arkadiusz Leniak Piotr J. Cywiński Daniel T. Gryko 10.1021/acs.orglett.5b02042.s001 https://acs.figshare.com/articles/journal_contribution/Planar_Fluorescent_Push_Pull_System_That_Comprises_Benzofuran_and_Iminocoumarin_Moieties/2134936 Previously 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. 2015-09-04 00:00:00 dibenzoyl HCN elimination nature Knoevenagel condensation benzofuran Fluorescent assembly heterocycle Comprises Benzofuran Planar fluorescence iminocoumarin moieties aryl Iminocoumarin MoietiesPreviously