Dimethylacetamide → 7-Chloro-6-hydroxy-1-methoxyisoquinoline

Participants

Reaction Conditions

Reaction Steps

A solution of sodium trimethylsilanoate (149.2 mL, 1M in THF) was added to a solution of 7-chloro-6-fluoro-1-methoxyisoquinoline (4, 10 g, 47.2 mmol) in DMA (200 mL) under argon. After stirring at 60° C. for 24 hours, the solution was evaporated under reduced pressure and then freeze dried to give crude product (20.4 g). This was dissolved in water and the pH adjusted to pH=6.5. A light brown precipitate was collected by filtration and purified by reverse phase chromatography (0 to 4 minutes, 15% acetonitrile/water, 4 to 24 minutes 15 to 90% acetonitrile/water and then 100% acetonitrile) to give 7 g of the desired product Rt=2.60 min (Method C). Detected mass: 210.0 (M+H+).

Provenance & Evidence