反应详情

The process is carried out as in stage 3 of Example 3, but using 300 mg of 2-fluoro-4-[4-(6-fluoro-1H-benzimidazol-2-yl)carbazol-9-yl]benzonitrile, obtained according to stage 2 of Example 3, 296 mg of potassium carbonate, 1.779 g of beta-alanineamide hydrochloride and 1.445 g of triethylamine in 3 ml of dimethyl sulphoxide. 1.357 ml of a 1M aqueous solution of sodium hydroxide, 1.313 ml of a 30% aqueous solution of hydrogen peroxide and 7 ml of ethanol are then added to the reaction medium. After treatment as in stage 3 of Example 3, and then purification by flash chromatography on silica gel, elution being carried out with mixtures of dichloromethane and ethanol (from 95/5 to 90/10 by volume), followed by crystallization from 10 ml of diisopropyl ether, 200 mg of 2-(2-carbamoylethylamino)-4-[4-(6-fluoro-1H-benzimidazol-2-yl)-9H-carbazol-9-yl]benzamide are thus obtained in the form of a beige solid, the characteristics of which are the following:

1. customobtained
2. customAfter treatment as in stage 3 of Example 3, and then purification by flash chromatography
3. washon silica gel, elution
4. customfollowed by crystallization from 10 ml of diisopropyl ether, 200 mg of 2-(2-carbamoylethylamino)-4-[4-(6-fluoro-1H-benzimidazol-2-yl)-9H-carbazol-9-yl]benzamide
5. customare thus obtained in the form of a beige solid