Phosphorus oxychloride → HCID 21578662, compound
Reaction equation
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][C:7](=O)[CH:6]=[C:5]2[C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([Cl:19])[CH:14]=1.P(Cl)(Cl)([Cl:22])=O>>[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([Cl:22])[CH:6]=[C:5]2[C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([Cl:19])[CH:14]=1Participants
3
Procedure
A mixture of intermediate 4 (0.16 mol) in phosphoryl chloride (500ml) was stirred and refluxed for one night. The mixture was evaporated till dryness, the residue was taken up in ice and water, alkalized with NH4OH and extracted with DCM. The organic layer was decanted, dried (MgSO4), filtered off and evaporated, yielding 56 g (100%) of 6-bromo-2-chloro-4-(3-chlorophenyl)quinoline, mp.125° C. (intermediate 5).
Workup
- temperaturerefluxed for one night
- customThe mixture was evaporated till dryness
- extractionextracted with DCM
- customThe organic layer was decanted