ol5b02042_si_001.pdf (8.72 MB)
Planar, Fluorescent Push–Pull System That Comprises Benzofuran and Iminocoumarin Moieties
journal contribution
posted on 2015-09-04, 00:00 authored by Marek
K. Węcławski, Till T. Meiling, Arkadiusz Leniak, Piotr J. Cywiński, Daniel T. GrykoPreviously 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.