[NH:1]1[CH2:6][CH2:5][O:4][C:3]2[CH:7]=[N:8][CH:9]=[CH:10][C:2]1=2.[Br:11][C:12]1[CH:13]=[C:14]([CH:18]=[C:19]([Br:23])[C:20]=1[O:21][CH3:22])[C:15](Cl)=[O:16]>>[Br:11][C:12]1[CH:13]=[C:14]([C:15]([N:1]2[CH2:6][CH2:5][O:4][C:3]3[CH:7]=[N:8][CH:9]=[CH:10][C:2]2=3)=[O:16])[CH:18]=[C:19]([Br:23])[C:20]=1[O:21][CH3:22]By the same method as in the step d) of Example 2, 2,3-dihydro-1H-pyrido[3,4-b][1,4]-oxazine (180 mg, 0.587 mmol) and 3,5-dibromo-4-methoxy-benzoyl chloride (193 mg, 0.587 mmol) were reacted to obtain the target compound 5, (3,5-dibromo-4-methoxy-phenyl)-(2,3-dihydro-pyrido[3,4-b][1,4]oxazin-1-yl)-methanone, as white solid (85 mg, 34%).
読み込み中…