Pyruvic Acid → 2,6-Dimethyl-4-(1-phenyl-1H-pyrazol-3-yl)aminophenyl 2-oxopropanoate

反応式

C(N1C=CN=C1)(N1C=CN=C1)=O.[C:13]([OH:18])(=[O:17])[C:14]([CH3:16])=[O:15].[CH3:19][C:20]1[CH:25]=[C:24]([NH:26][C:27]2[CH:31]=[CH:30][N:29]([C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[N:28]=2)[CH:23]=[C:22]([CH3:38])[C:21]=1O>ClCCl>[O:15]=[C:14]([CH3:16])[C:13]([O:18][C:21]1[C:22]([CH3:38])=[CH:23][C:24]([NH:26][C:27]2[CH:31]=[CH:30][N:29]([C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)[N:28]=2)=[CH:25][C:20]=1[CH3:19])=[O:17]

参加物

実験手順

1,1'-carbonyldiimidazole (4.9 g) was added batchwise to pyruvic acid (2.6 g) in dichloromethane (100 ml), and after 0.5 hours 2,6-dimethyl-4-(1-phenyl-1H-pyrazol-3-yl) aminophenol (2.8 g) was added. The mixture was left for 16 hours, then evaporated, and the residue was chromatographed (silica, dichloromethane) to give, after crystallisation (hexane/ethyl acetate), the title product (1.0 g) mp 123°-125°.