Sodium Carbonate → HCID 57426226, compound

Participants

Reaction Steps

To a deoxygenated solution of ethyl (2-bromo-4-nitro-1H-indol-3-yl)acetate from Step B (250 mg, 0.76 mmol), 2-methylphenylboronic acid (156 mg, 1.15 mmol), and Na2CO3 (202 mg, 1.91 mmol) in EtOH (10 mL), toluene (10 mL) and H2O (0.5 mL) was added tetrakis(triphenylphosphine)palladium (44 mg, 0.038 mmol) and the resulting mixture was heated at reflux for 18 h. The cooled mixture was diluted with H2O (20 mL) and extracted with EtOAc (2×50 mL), and the combined organic extracts were dried over Na2SO4, filtered, and concentrated in vacuo. The crude product was purified by silica gel chromatography, eluting with a gradient of CHCl3:EtOAc—100:0 to 80:20, to give the title compound. MS: m/z=339 (M+1).

Provenance & Evidence