Fig. 5
From: Catalytic amidation of natural and synthetic polyol esters with sulfonamides

Depolymerization of PET. a General one-pot reaction sequence of Lewis acid-catalyzed depolymerization of PET with saccharin. Recovered yields of terephthalic acid 6 and byproduct 9 were shown for reactions run at 1 mmol scale and 2 g (10 mmol) scale. b Analysis of solids precipitated out from the intermediate reaction mixture. aq, aqueous solution