Water → HCID 59425037、化合物

反応式

F[C:2]1C=[CH:7][C:6]([N+:9]([O-:11])=[O:10])=[CH:5][C:3]=1N.[C:12](#[N:16])[CH2:13][C:14]#[N:15].[C:17](=O)([O-])[O-].[K+].[K+].O.[CH3:24][N:25]([CH3:28])C=O>>[NH2:15][C:14]1[N:25]([CH2:28][CH3:17])[C:24]2[C:2]([C:13]=1[C:12]#[N:16])=[CH:3][CH:5]=[C:6]([N+:9]([O-:11])=[O:10])[CH:7]=2

参加物

反応物 5

HCID 962Water

HCID 6228Dimethylformamide

HCID 8010Malononitrile

HCID 11430Potassium Carbonate

HCID 677852-Fluoro-5-nitroaniline

生成物 1

HCID 59425037HCID 59425037、化合物収率 52%

実験手順

A solution of 2-fluoro-5-nitroaniline (11.7 g, 74.9 mmol) in dimethylformamide (120 mL) is treated with malononitrile (5.28 g, 80.0 mmol) and potassium carbonate (11.05 g, 80.0 mmol) (Modification of Chem. Heterocyclic Cpd. Engl. Trans., 9, 37 (2001)). The resulting heterogeneous mixture is heated to gentle reflux for 3 h, then cooled and poured into water (500 mL). The resulting precipitate is collected by filtration and taken up into ethyl acetate (300 mL). This solution is dried over Na2SO4, filtered and partially evaporated to give a precipitate, which is collected by filtration. Further evaporation and filtration give a second crop. The two crops are combined and dried under vacuum to give 2-amino-1-ethyl-6-nitro-1H-indole-3-carbonitrile (7.90 g, 52%) as an orange powder.