Sodium Carbonate → HCID 60170439, compound

Participants

Reaction Conditions

Reaction Steps

1-(1-(5-Bromopyridin-2-yl)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-2-phenylethyl)-3-cyclopentylurea (100 mg, 0.18 mmol, prepared in a similar manner as described in Example 1), K4Fe(CN)6 (45 mg, 0.107 mmol), Pd(OAc)2 (catalytic amount, spatula tip), and Na2CO3 (31 mg, 0.29 mmol) were stirred in DMAC (0.4 mL) at room temperature. Argon was purged several times. The reaction mixture was stirred and heated at 120° C. for 6 h. After cooling, EtOAc was added. The reaction mixture was filtered through Celite and the filtrate was washed with H2O, 5% NH4OH, dried (MgSO4), filtered, and concentrated to dryness. The crude reaction mixture was purified by flash chromatography (silica gel, hexanes/EtOAc, came out 50% EtOAc). The reaction mixture was then further purified by reverse phase HPLC (20%-100% CH3CN in H2O with 0.1 TFA in a 18 min run, came out at 13.38 to 13.88 min) to give pure racemic mixture of (R)-1-(1-(5-cyanopyridin-2-yl)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-2-phenylethyl)-3-cyclopentylurea and (S)-1-(1-(5-cyanopyridin-2-yl)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-2-phenylethyl)-3-cyclopentylurea as white solids (16 mg, yield: 18%). LC-MS ESI (10-90% MeOH in H2O with 10 mM NH4Cl in a 4-min run), retention time=3.93 min, 494.9 (M−H);

Provenance & Evidence