Phosphorus pentachloride → 3-(2,4-Difluorophenoxy)-4-methanesulfonamidobenzoyl chloride
Reaction equation
[F:1][C:2]1[CH:22]=[C:21]([F:23])[CH:20]=[CH:19][C:3]=1[O:4][C:5]1[CH:6]=[C:7]([CH:11]=[CH:12][C:13]=1[NH:14][S:15]([CH3:18])(=[O:17])=[O:16])[C:8](O)=[O:9].P(Cl)(Cl)(Cl)(Cl)[Cl:25]>C1C=CC=CC=1>[F:1][C:2]1[CH:22]=[C:21]([F:23])[CH:20]=[CH:19][C:3]=1[O:4][C:5]1[CH:6]=[C:7]([CH:11]=[CH:12][C:13]=1[NH:14][S:15]([CH3:18])(=[O:17])=[O:16])[C:8]([Cl:25])=[O:9]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture of 3-(2,4-difluorophenoxy)-4-methanesulfonamidobenzoic acid (0.6 g) and phosphorus pentachloride (0.4 g) in benzene (6 ml) was warmed, dissolved, and then stirred for 25 minutes at room temperature. The mixture was concentrated under reduced pressure to give a powder of 3-(2,4-difluorophenoxy)-4-methanesulfonamidobenzoyl chloride (0.7 g).