Water → N-[5-[4-(5-{[(2R,6S)-2,6-Dimethyl-4-morpholinyl]methyl}-1,3-oxazol-2-yl)-1-(phenylsulfonyl)-1H-indazol-6-yl]-2-(methyloxy)-3-pyridinyl]-2,4-difluorobenzenesulfonamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-chloro-4-(5-{[(2R,6S)-2,6-dimethyl-4-morpholinyl]methyl}-1,3-oxazol-2-yl)-1-(phenylsulfonyl)-1H-indazole (0.2 g, 0.411 mmol) and 2,4-difluoro-N-[2-(methoxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-pyridinyl]benzenesulfonamide (0.228 mg, 0.534 mmol) in 1,4-dioxane (2 ml) was added chloro[2′-(dimethylamino)-2-biphenylyl]palladium-1(1R,4S)-bicyclo[2.2.1]hept-2-yl[(1S,4R)-bicyclo[2.2.1]hept-2-yl]phosphane (11.5 mg, 0.021 mmol), potassium phosphate tribasic (0.262 g, 1.23 mmol) and water (0.2 ml). The reaction mixture was heated to 120° C. with stirring for 3 h under microwave irradiation, then filtered through a silica SPE, eluting with methanol. The solvent was removed and the residue partitioned between dichloromethane (5 ml) and water (5 ml). The layers were separated and the aqueous extracted with further dichloromethane (2×2.5 ml). The combined organics were concentrated under a stream of nitrogen and the residue dissolved in DMSO and a few drops of dichloromethane (3 ml) and purified by MDAP (method H) in 3 injections. The appropriate fractions were evaporated in vacuo to give the title compound as a pale brown solid (0.105 g).

Provenance & Evidence