Water → 4-Bromo-1,6-dihydro-6-methyl-1-((4-methylphenyl)sulfonyl)-7H-pyrrolo(2,3-c)pyridin-7-one

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Reaction Steps

Sodium hydride (0.875 g, 36.5 mmol, 1.46 g of a 60% in oil dispersion) was added to a stirring solution of 4-bromo-1-tosyl-1H-pyrrolo[2,3-c]pyridin-7(6H)-one (11.2 g, 30.4 mmol) in dimethylformamide (217 mL) under nitrogen. After 30 minutes, iodomethane (2.27 mL, 36.5 mmol) was added and the solution was stirred at room temperature for 3 h. Upon addition of water (250 mL) a precipitate formed. The precipitate was collected by vacuum filtration, rinsed with water (50 mL) and dried in a vacuum oven at 55° C. overnight to provide 11.2 g of 4-bromo-6-methyl-1-tosyl-1H-pyrrolo[2,3-c]pyridin-7(6H)-one (96%).

Provenance & Evidence