反应详情

N-(2-Methyl-1H-pyrrolo[2,3-c]pyridin-7yl)cyclopropanecarboxamide (100 mg, 0.46 mmol) was added to a stirred suspension of aluminium chloride (620 mg, 4.65 mmol) in dry dichloromethane (5 mL) and the mixture was stirred at room temperature for about 1 hour under argon atmosphere. This was followed by drop wise addition of a solution of 2,6-dichlorobenzoyl chloride (194 mg, 0.93 mmol) in dichloromethane and stirring overnight at room temperature. After completion, methanol (10 mL) was added cautiously to quench the reaction mass followed by concentration under vacuum. The residual mass was diluted with water and extracted with ethyl acetate. The combined organic layer was neutralized using aq. sodium bicarbonate solution, washed with brine, dried over anhydrous sodium sulfate and concentrated. Purification by silica gel (100-200) column chromatography using dichloromethane and methanol gradient as eluent afforded N-[3-(2,6-dichlorobenzoyl)-2-methyl-1H-pyrrolo[2,3-c]pyridin-7-yl]cyclopropanecarboxamide (70 mg, 39%).

1. stirringstirring overnight at room temperature
2. customto quench the reaction mass
3. concentrationfollowed by concentration under vacuum
4. additionThe residual mass was diluted with water
5. extractionextracted with ethyl acetate
6. washwashed with brine
7. dry with materialdried over anhydrous sodium sulfate
8. concentrationconcentrated
9. customPurification by silica gel (100-200) column chromatography