[H-].[Na+].[N:3]1[CH:8]=[CH:7][CH:6]=[N:5][C:4]=1[NH:9][CH2:10][CH2:11][OH:12].F[C:14]1[CH:21]=[CH:20][C:17]([CH:18]=[O:19])=[CH:16][CH:15]=1.O>CN(C=O)C>[N:3]1[CH:8]=[CH:7][CH:6]=[N:5][C:4]=1[NH:9][CH2:10][CH2:11][O:12][C:14]1[CH:21]=[CH:20][C:17]([CH:18]=[O:19])=[CH:16][CH:15]=1Sodium hydride (1.2 g; 60% dispersion in oil) was added portionwise to a stirred solution of 2-(2-pyrimidinyl amino)ethanol (4 g) in DMF (140 ml) under an atmosphere of nitrogen. After the vigorous reaction had subsided 4-fluorobenzaldehyde (5.35 g) was added and the solution heated to 80° C. for 20 hours. After cooling the mixture was added to water (500 ml) and extracted with diethyl ether (3×300 ml). The organic extracts were washed with brine (2×200 ml), dried (MgSO4), filtered and evaporated to dryness. Chromatography of the residue on silica gel in 2% methanol in dichloromethane afforded the title compound, which was used in the next stage without further purification.
読み込み中…
