Abstract
Here, we present a novel and significantly shorter synthetic approach to hexakis(azulen-2-yl)benzenes, compared to previously reported strategies. A six-fold Suzuki cross-coupling reaction between hexabromobenzene and borylated azulenes afforded the propeller-shaped hexakis(azulen-2-yl)benzenes 1c and 1d in yields ranging from 46% to 81%. The resulting azulene-containing hydrocarbons were fully characterized, including X-ray single-crystal diffraction analysis. We believe, that these hexakis(azulen-2-yl)benzenes hold great potential as building blocks for larger, conjugated polycyclic aromatic hydrocarbons.
Supplementary materials
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Supporting Information
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Copies of NMR, UV/Vis and HRMS spectra
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