[CH3:1][N:2]1[CH2:7][CH2:6][N:5]([C:8]2[CH:9]=[N:10][C:11]([C:14]3[CH:15]=[C:16]([CH:21]=[CH:22][CH:23]=3)[C:17](OC)=[O:18])=[N:12][CH:13]=2)[CH2:4][CH2:3]1.[H-].C([Al+]CC(C)C)C(C)C.S([O-])([O-])(=O)=O.[Na+].[Na+].ClCCl>C1COCC1>[CH3:1][N:2]1[CH2:3][CH2:4][N:5]([C:8]2[CH:13]=[N:12][C:11]([C:14]3[CH:15]=[C:16]([CH2:17][OH:18])[CH:21]=[CH:22][CH:23]=3)=[N:10][CH:9]=2)[CH2:6][CH2:7]1860 mg (2.75 mmol) of methyl 3-[5-(4-methylpiperazin-1-yl)pyrimidin-2-yl]-benzoate are dissolved in 16 ml of THF, and 13.8 ml (13.8 mmol) of 1 M diisobutylaluminium hydride in THF are added dropwise at room temperature, and the reaction mixture is stirred at room temperature for 1 h. A further 13.8 ml 13 (13.8 mmol) of 1 M diisobutylaluminium hydride in THF are added dropwise, and the reaction mixture is stirred at room temperature for 1 h. 3 ml of saturated sodium sulfate solution are added to the reaction mixture with ice-cooling. Dichloromethane is added to the gelatinous mixture, which is then stirred for 30 min and filtered. The filtrate is dried over sodium sulfate and evaporated.
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