How is 5-Chloro-N-cyclohexylpentanamide (CAS: 15865-18-6) typically synthesized?

5-Chloro-N-cyclohexylpentanamide (CAS: 15865-18-6) is synthesized via a multistep process, starting with the amide formation between cyclohexylamine and pentanoyl chloride. The reaction is typically catalyzed by a Lewis acid, such as aluminum chloride, to facilitate the formation of the amide bond. The product can be purified by recrystallization from organic solvents, yielding a high-purity crystalline form with a good yield.