[CH2:1]([C:8]1[C:17]2[C:12](=[CH:13][C:14]([O:18][CH3:19])=[CH:15][CH:16]=2)[C:11](=O)[NH:10][N:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.P(Cl)(Cl)([Cl:23])=O>>[CH2:1]([C:8]1[C:17]2[C:12](=[CH:13][C:14]([O:18][CH3:19])=[CH:15][CH:16]=2)[C:11]([Cl:23])=[N:10][N:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1This compound is obtained according to the procedure described in 1.3. by reacting 4-benzyl-7-methoxy-2H-phthalazin-1-one with phosphoryl chloride.
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