[H-].[Na+].[CH3:3][O:4][CH:5]([O:15][CH3:16])[CH2:6][NH:7][C:8]1[CH:13]=[CH:12][C:11]([OH:14])=[CH:10][CH:9]=1.[CH3:17][N:18]([CH3:22])[CH2:19][CH2:20]Cl>CN(C)C=O.C(OCC)(=O)C>[CH3:16][O:15][CH:5]([O:4][CH3:3])[CH2:6][NH:7][C:8]1[CH:13]=[CH:12][C:11]([O:14][CH2:20][CH2:19][N:18]([CH3:22])[CH3:17])=[CH:10][CH:9]=1Sodium hydride (1.57 g) was added to a solution of 4-(2,2-dimethoxyethyl-amino)phenol (4.3 g) in dimethylformamide (25 mL). After 30 minutes, 2-dimethylaminoethyl chloride (hydrochloride, 3.14 g) was added. After 12 hours, the reaction solution was diluted with ethyl acetate and washed with water. The organic phase was dried and concentrated. The residue was purified by MPLC (eluent: dichloromethane/methanol/ammonia solution 95:4.9:0.1). The product with the molecular weight of 268.36 (C14H24N2O3); MS (ESI): 269 ([M+H]+), was obtained in this way.
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