Chemistry is traditionally divided into organic and inorganic chemistry. COA of Formula: C9H6O2, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 4265-16-1
We investigated the one-pot synthesis of several fused 2-pyridone ring systems based on a Curtius rearrangement, followed by a microwave-assisted thermal electrocyclization of a 2-aza-6?-electron system including isocyanate. We synthesized seven heterocyclic compounds containing a fused 2-pyridone ring. In these results, the one-pot synthesis of fused 2-pyridone ring system 5 from (E)-acrylic acids 1 under microwave irradiation conditions was more effective than the conventional reaction conditions in terms of the yield and the reaction time.
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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H974O – PubChem