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Step a: (2-chloro-6-fluorophenyl)( 1H-pyrrolo[3,2-c]pyridin-1 -yl)methanoneTo a stirred solution of 2-chloro-6-fluorobenzoic acid (2.5 g, 14.32 mmol) in dichloromethane (20 ml_), oxalyl chloride (3.029 ml, 28.64 mmol) was added at 0 C. After stirring at the same temperature for 15 min, dimethylfromamide (2-3 drops) was added, and the reaction was allowed to stir at room temperature for 1 .5 hours. The reaction mixture was cooled and concentrated on rotary evaporator. The residue was taken up in dichloromethane (20 ml_) and treated with <strong>[271-34-1]5-azaindole</strong> (1 .72 g, 14.51 mmol) and triethylamine (6.1 ml_, 43.52 mmol). The resulting reaction mixture was allowed to stir at room temperature for 20 hours. The reaction mixture was concentrated under vacuum, diluted with water (50 ml_) and extracted with ethyl acetate (2 x 100 ml_). The combined organic layer was washed with saturated aqueous solution of sodium bicarbonate. The organic layer was dried over anhydrous sodium sulfate, filtered and the solvent was removed under rotary evaporator. The product was isolated by silica gel column chromatography using ethyl acetate (25%) in hexanes as eluent to yield (2-chloro-6-fluorophenyl)(1 H- pyrrolo[3,2-c]pyridin-1 -yl)methanone (1 .56 g, 39.5%).MS (m/z): 274.68 (M+)
39.5%
To a stirred solution of 2-chloro-6-fluorobenzoic acid (2.5 g, 14.32 mmol) in dichloromethane (20 mL), oxalyl chloride (3.029 ml, 28.64 mmol) was added at 0 C. After stirring at the same temperature for 15 min, dimethylfromamide (2-3 drops) was added, and the reaction was allowed to stir at room temperature for 1.5 hours. The reaction mixture was cooled and concentrated on rotary evaporator. The residue was taken up in dichloromethane (20 mL) and treated with <strong>[271-34-1]5-azaindole</strong> (1.72 g, 14.51 mmol) and triethylamine (6.1 mL, 43.52 mmol). The resulting reaction mixture was allowed to stir at room temperature for 20 hours. The reaction mixture was concentrated under vacuum, diluted with water (50 mL) and extracted with ethyl acetate (2*100 mL). The combined organic layer was washed with saturated aqueous solution of sodium bicarbonate. The organic layer was dried over anhydrous sodium sulfate, filtered and the solvent was removed under rotary evaporator. The product was isolated by silica gel column chromatography using ethyl acetate (25%) in hexanes as eluent to yield (2-chloro-6-fluorophenyl)(1H-pyrrolo[3,2-c]pyridin-1-yl)methanone (1.56 g, 39.5%). MS (m/z): 274.68 (M+)
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