Synthesis of Anthranilic Acid-Based Hypercrosslinked Polymer

In a round bottom flask fitted with condenser carrying 10 mL of solvent (Dichloroethane), 0.3 g of aromatic monomer (anthranilic acid), 1 mL of cross-linker (CCl₄) and 0.3 g of Ferric Chloride (FeCl₃), used as a catalyst, were continuously mixed and heated in an oil bath. Initially, temperature was maintained at 45 °C for 4–5 h, and then raised to 80–85 °C for 19–20 h till product was formed. The thick paste like appearance indicates the syntheses of HCP-AA which was washed with ethanol till pure HCP-AA was obtained after the removal of excessive solvent and FeCl₃ (washed until brown color of FeCl₃ disappeared). After filtrations, purified product was collected in china dish and dried at 100 °C in an oven^{57 ,58 (link)}.