Water → HCID 89444094, compound

Participants

Reaction Steps

To a solution of 2-fluoro-5-(3-fluorophenyl)benzoic acid (Intermediate III(a)) (437 mg, 1.87 mmol, 1.1 eq) in CH2Cl2 (10 mL) and DMF (3 drops) was added SOCl2 (15 mL) dropwise at 0° C. The solution was stirred at room temperature for 1 h, then concentrated in vacuo. The residue obtained was dissolved in THF (20 mL) and added dropwise to a solution of 3-amino-2,4-difluoro-5-methyl-phenol (270 mg, 1.70 mmol, 1.0 eq) in THF (10 mL) at 0° C. After addition was completed, the reaction mixture was stirred at room temperature for 2 h, then poured into water and extracted with EtOAc. The combined organic extracts were washed with water and brine, dried (Na2SO4), filtered, and evaporated in vacuo. The residue obtained was purified by column chromatography (petroleum ether: EtOAc, 10:1 to 3:1) to give the title compound as a white solid (285 mg, 45%).

Provenance & Evidence