2-Cyclohexen-1-one

Its enone system allows nucleophilic attack at the β‑position, helping to introduce aryl or alkyl substituents that are later elaborated into the propionic acid side chain characteristic of Carprofen. Additionally, the cyclic ketone framework can be further functionalized or opened to construct the carbazole core present in Carprofen, making 2‑cyclohexen‑1‑one a versatile building block in assembling the drug’s fused ring system. 2‑Cyclohexen‑1‑one serves as a useful α,β‑unsaturated ketone intermediate in the synthesis of Carprofen intermediates by enabling key carbon–carbon bond formation through Michael addition or conjugate addition reactions.