Synthesis, characterization and antibacterial activities of novel organosoluble and thermally stable Xanthone-based polyamides

The xanthone nucleus displays very good thermo-oxidative and hydrolytic stability and would appear to have considerable potential as a structural motif in high-performance polymerchemistry. Several different synthetic routes for xanthones were introduced in literatures, including condensation of a benzopyranonphthalide with Michael acceptors, cyclodehydration of 2,2´-dihydroxybenzophenones, electrophilic cycliacylation of 2-aryloxybenzoic acids, tandemintermolecular nucleophilic coupling and subsequent intramolecular electrophilic cyclization, [1-2], but a few ofsuch reactions have been applied for the synthesis of polyxanthones [3].