Synthesis of Cyclic Derivatives of Carbonyl Compounds of Furan Series

Fully biomass-derived vitrimeric material with water-mediated recyclability and monomer recovery

“…We then added 0.5 mol% of p -toluenesulfonic acid (TsOH) (entry 6). 52 Pleasingly, a gel-like solid was observed at the end of the reaction. Even at temperatures as low as 100 °C, the reaction was still productive, and a gel-like solid is observed (entry 7).…”

“…Over time, increasing amount of furfural–sorbitol acetal peaks were observed until a steady state was reached after about 850 min. On the other hand, when TsOH, a common catalyst used for acetylation, 52 was added (0.5 mol%), the reaction was extremely rapid. Almost all the starting furfural–ethylene acetal converting into other forms within 15 min, and steady state was achieved in about 70 min (Fig.…”