Dichloromethane → HCID 73443602, compound

Participants

Reaction Steps

Tetrakis(triphenylphosphine)palladium (O) (10 mol %, 58 mg) was added to a mixture of the compound of Example 13, Isomer A (288 mg, 0.493 mmol) and phenyl boronic acid (90 mg, 0.74 mmol) in DME (10 ml) and sodium carbonate (2M, 0.986 mmol, 0.493 ml). The mixture was heated at 80° overnight, dlute with CH2Cl2 (200 ml), washed with diluted HCl and sodium hydrogen carbonate solution, dried (Na2SO4) and evaporated in vacuo. Chromatography (SiO2; CH2Cl2/MeOH, 93:7) gave the title compound as a white solid (133 mg). δH (DMSO-d6), 11.04 (1H, s, CONH), 10.40 (1H, s, CONH), 8.79 (2H, s, Cl2PyH), 8.48 (1H, dd, J 4.9, 1.9 Hz, PyH), 7.85 (1H, dd, J 7.5, 1.9 Hz, PyH), 7.66 (2H, d, J 8.7 Hz, ArH), 7.51 (1H, dd, J 7.5, 4.9 Hz, PyH), 7.39-7.35 (3H, m, ArH), 7.23 (2H, d, J 8.7 Hz, ArH), 7.07 (2H, m, ArH) and 3.45 (3H, s, CO2Me); m/z (ESI, 60V) 581 (MH+).

Provenance & Evidence