Hydrochloric Acid → HCID 66730793, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-(6-bromo-3-cyano-5-fluoro-1-(pyrimidin-2-yl)-1H-indol-2-yl)-N-tert-butylpyridine-3-sulfonamide and 6-(6-bromo-3-chloro-5-fluoro-1-(pyrimidin-2-yl)-1H-indol-2-yl)-N-tert-butylpyridine-3-sulfonamide (84 mg, 0.156 mmol), Pd(OAc)2 (7.6 mg, 0.034 mmol), 1,3-bis(diphenylphosphino)propane (31 mg, 0.075 mmol), K2CO3 (0.19 g, 1.36 mmol), butyl vinyl ether (0.73 mL, 5.66 mmol) in DMF (3.0 mL) and water (0.35 mL) was stirred at 120° C. overnight under N2 atmosphere. The mixture was then acidified to pH ˜1 with 1 N HCl, stirred at room temperature for 1 hr, extracted with ethyl acetate followed by drying with Na2SO4, evaporation and purification by flash chromatography with 5 to 20% ethyl acetate in CH2Cl2 to give N-tert-butyl-6-(3,6-diacetyl-5-fluoro-1-(pyrimidin-2-yl)-1H-indol-2-yl)pyridine-3-sulfonamide (58 mg, 73%). MS m/z 510.1 M+H+; 1H NMR (500 MHz, acetone-d6): δ 9.07 (1H, d, J=2.2 Hz), 8.77 (1H, d, J=6.2 Hz), 8.58 (2H, d, 4.9 Hz), 8.28 (1H, dd, J=8.2, 2.2 Hz), 8.12 (1H, d, J=10.2 Hz), 7.78 (1H, dd, J=8.2, 0.7 Hz), 7.21 (1H, t, J=4.9 Hz), 4.80 (1H, br s), 2.75 (3H, d, J=5.4 Hz), 2.21 (3H, s), 1.25 (9H, s).

Provenance & Evidence