Sodium Bicarbonate → HCID 44547092, compound

Participants

Reaction Conditions

Reaction Steps

To a degassed solution of 125 mg (0.315 mmol) 8-(3-bromo-1H-indazol-5-yl)-6-methyl-1,3,4,8-tetrahydropyrido[2,1-c][1,4]oxazine-7,9-dicarbonitrile (Example 12A) and 53.3 mg (0.379 mmol) (6-fluoropyridin-3-yl)boronic acid in anhydrous 1,4-dioxane (2.2 ml) were added under inert gas atmosphere 36.5 mg (0.032 mmol) tetrakis(triphenylphosphine)palladium(0) and aqueous sodium bicarbonate solution (2 M, 0.56 ml). The resulting mixture was stirred at 140° C. for 70 min under microwave conditions. After cooling to room temperature and concentration under reduced pressure, the remaining solid was dissolved in ethyl acetate (20 ml). The solution was subsequently washed with water and with brine, dried over sodium sulfate and concentrated under reduced pressure. The crude product was purified by preparative RP-HPLC (acetonitrile/water gradient, final mixture 95:5 v/v) to yield the title compound as a white solid (64 mg, 49% of th.).

Provenance & Evidence