Diethyl (ethoxymethylene)malonate → HCID 20207465、化合物
反応式
[OH:1][C:2]1[CH:3]=[C:4]([CH:6]=[C:7]([OH:9])[CH:8]=1)[NH2:5].C(O[CH:13]=[C:14]([C:20]([O:22][CH2:23][CH3:24])=[O:21])[C:15]([O:17][CH2:18][CH3:19])=[O:16])C>C(O)C>[CH2:23]([O:22][C:20]([C:14]([C:15]([O:17][CH2:18][CH3:19])=[O:16])=[CH:13][NH:5][C:4]1[CH:3]=[C:2]([OH:1])[CH:8]=[C:7]([OH:9])[CH:6]=1)=[O:21])[CH3:24]参加物
4
実験手順
A mixture of 3,5-dihydroxyaniline (2.0 g), 2-ethoxy-1,1-bis(ethoxycarbonyl)ethene (3.0 g) and ethanol (10 ml) was left to stand at room temperature for 2 days. The resulting solid was filtered off, dissolved in dimethylsulphoxide (20 ml) and then treated with water (100 ml). The resulting solid was washed with water, to give 1,1-bis(ethoxycarbonyl)-2-(3,5-dihydroxyphenylamino)ethene (3.2 g), m.p. 190°-192° C.