反应详情

温度

25 °C

The aromatic ester is reacted with an aniline in a solvent and heating to form the anilide product. The reaction temperature can be varied to from about 140° C. to about 280° C. or above. Specifically, phenyl 2-hydroxy-11H-benzo(a)carbazole-3-carboxylate can be reacted with aniline in methyl N-pyrrolidinone at about 250° C. The ratio of the phenyl ester to aniline can vary, for example, from about 1:1 equivalent and up to about 20 equivalents. After the reaction is completed, the product mixture is cooled to room temperature, about 25° C., and discharged into an acidic aqueous solution, such as a 5 percent HCl ice cold solution. The precipitated anilide product, such as 2-hydroxy-11H-benzo(a)carbazole-3-carboxanilide, is isolated by filtration and washed with water and methanol. Purification can be accomplished by first dissolving the crude product in a hot solvent, such as DMF, and then precipitating the product by adding water or methanol, or a mixture of methanol and water. The purified product is then characterized by melting point, IR, mass spectrometry, NMR spectroscopy, especially 13C NMR as well as elemental analysis.

1. customcan be varied to from about 140° C. to about 280° C. or above