[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]([F:12])[CH:11]=1)[N:8]=[CH:7][CH:6]=[C:5]2O.P(Br)(Br)[Br:15]>CN(C=O)C>[Br:15][C:5]1[C:4]2[C:9](=[C:10]([F:12])[CH:11]=[C:2]([F:1])[CH:3]=2)[N:8]=[CH:7][CH:6]=16,8-Difluoro-quinolin-4-ol (commercially available) (7.43 g) in DMF (200 mL) was treated with phosphorus tribromide (4.24 mL) by the method of Example (28a) to give a solid (9.03 g).
読み込み中…