How is 2-Fluoro-6-nitro-N-phenylbenzamide (CAS: 870281-83-7) typically synthesized?

2-Fluoro-6-nitro-N-phenylbenzamide (CAS: 870281-83-7) can be synthesized via a multi-step process, starting with the nitration of 2-fluorobenzamide. The nitro group is introduced using a mixture of fuming nitric acid and sulfuric acid. Subsequently, the phenyl substituent is introduced via coupling with phenyl isocyanate in the presence of a base like triethylamine. The reaction is typically carried out in an organic solvent such as dichloromethane, with yields ranging from 60-80%.