Phosphorus pentachloride → HCID 10448313, compound
Reaction equation
[F:1][C:2]1[CH:20]=[C:19]([F:21])[CH:18]=[CH:17][C:3]=1[O:4][C:5]1[CH:6]=[C:7]([CH:11]=[CH:12][C:13]=1[N+:14]([O-:16])=[O:15])[C:8](O)=[O:9].P(Cl)(Cl)(Cl)(Cl)[Cl:23]>C1C=CC=CC=1>[F:1][C:2]1[CH:20]=[C:19]([F:21])[CH:18]=[CH:17][C:3]=1[O:4][C:5]1[CH:6]=[C:7]([CH:11]=[CH:12][C:13]=1[N+:14]([O-:16])=[O:15])[C:8]([Cl:23])=[O:9]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture of 3-(2,4-difluorophenoxy)-4-nitrobenzoic acid (2.1 g) and phosphorus pentachloride (1.6 g) in benzene (20 ml) was stirred for 2 hours at room temperature. The mixture was concentrated under reduced pressure to give crystals of 3-(2,4-difluorophenoxy)-4-nitrobenzoyl chloride (2.2 g). A solution of 3-(2,4-difluorophenoxy)-4-nitrobenzoyl chloride (2.2 g) in benzene (20 ml) was added to a mixture of aluminum chloride (2.4 g) in benzene (20 ml). The mixture was stirred overnight at ambient temperature and concentrated under reduced pressure. The residue was dissolved in chloroform, washed with diluted hydrochloric acid and water successively, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was recrystallized from a mixture of hexane and ethanol to give crystals of 3-(2,4-difluorophenoxy)-4-nitrobenzophenone (2.3 g).