Formation of Bis-Benzimidazole and Bis-Benzoxazole Through Organocatalytic Depolymerization of Poly(ethylene Terephthalate) and Its Mechanism

One-pot syntheses of bis-benzimidazole and bis-benzoxazole from poly(ethylene terephthalate) waste bottles were successful through two-step nucleophilic attacks promoted by TBD.