2-Chloro-4-[(1-isopropyl-4-piperidinyl)oxy]benzoic acid hydrochloride → 2-Chloro-4-[(1-isopropyl-4-piperidinyl)oxy]benzoyl chloride hydrochloride
Reaction equation
[ClH:1].[Cl:2][C:3]1[CH:11]=[C:10]([O:12][CH:13]2[CH2:18][CH2:17][N:16]([CH:19]([CH3:21])[CH3:20])[CH2:15][CH2:14]2)[CH:9]=[CH:8][C:4]=1[C:5](O)=[O:6]>S(Cl)(Cl)=O>[ClH:2].[Cl:2][C:3]1[CH:11]=[C:10]([O:12][CH:13]2[CH2:18][CH2:17][N:16]([CH:19]([CH3:21])[CH3:20])[CH2:15][CH2:14]2)[CH:9]=[CH:8][C:4]=1[C:5]([Cl:1])=[O:6]Participants
3
Procedure
2-Chloro-4-[(1-isopropyl-4-piperidinyl)oxy]benzoic acid hydrochloride (D32) (0.20 g) was dissolved in thionyl chloride (10 ml) and heated under reflux for 1.5 h. The thionyl chloride was removed by evaporation and the residue was evaporated from DCM (3×10 ml) to give the title compound (D33) (0.21 g).