By condensing guaiazulene carboxylic acid with poly(allylamine), guaiazulene-substituted poly(allylamine) was synthesized. The polymer showed high water solubility and improved stability even under acidic conditions.
Guaiazulene-derived carbocations react with metal enolates. These reactions afford guaiazulene-containing carbonyl derivatives and reaction progress can be easily monitored by UV-Vis or fluorescence spectroscopy.
The non-benzenoid aromatic system azulene is sufficiently electron-donating that α-cations at C1 may be isolated as stable salts with appropriate spectator anions. Preparation and characterisation of such salts is reported.
This highlight provides an overview of methods for carbon–carbon bond formation using sustainable aromatics derived from biomass.
In this paper, thia-APEX reactions affording π-extended thianthrene derivatives from unfunctionalized aromatics are described.