Sustainable carbon nanoarchitectonics: a biomass derived carbon nano-onion/magnetite composite as a reusable catalyst for solvent-free synthesis of benzoxazinones and benzthioxazinones.

ABSTRACT: In pursuit of greener and more sustainable chemical transformations, we report the synthesis of a biomass-derived carbon nano-onion/magnetite (CNO/Fe₃O₄) composite using flaxseed oil via a facile, eco-friendly wick pyrolysis method. The resulting nanocomposite exhibits excellent catalytic activity for the solvent-free synthesis of benzoxazinones and benzothioxazinones-pharmacologically relevant heterocycles-with yields of up to 95%. The unique layered architecture of CNOs combined with the magnetic functionality of Fe₃O₄ imparts high surface area, thermal stability, and magnetic recoverability, enabling easy separation and reuse over multiple cycles with minimal activity loss. Comprehensive characterization using FT-IR, XRD, BET, HR-TEM, F

SUBMITTER: Kurup GB 

PROVIDER: S-EPMC12580709 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature