Trifluoroacetic acid → HCID 56601186, compound

Participants

Reaction Steps

To a solution of 4-[4-bromo-2-(2-methyl-2H-pyrazol-3-yl)-phenoxy]-3-cyano-N-(2,4-dimethoxy-benzyl)-N-thiazol-2-yl-benzenesulfonamide (Preparation 88, 98.5 mg, 0.148 mmol), 3-methoxyphenylboronic acid (48 mg, 0.32 mmol), and potassium carbonate (62.5 mg, 0.452 mmol) in toluene (3 mL) was added tetrakistriphenylphosphinepalladium (0) (22.5 mg, 0.0195 mmol) and the mixture was sparged two times with argon. The reaction mixture was heated at reflux for 4.5 hours. After cooling to room temperature the reaction mixture was partitioned between ethyl acetate and water. The organic layer was separated and washed with saturated sodium chloride solution, dried over anhydrous MgSO4, filtered, and concentrated in vacuo. The residue was purified by automated flash column chromatography using a 0-100% EtOAc/hexanes gradient to yield a clear oil. This oil was dissolved in methylene chloride (5 mL) and treated with trifluoroacetic acid (1 mL, 10 mmol). After stirring for 1 hour, the reaction mixture was concentrated in vacuo and purified by automated flash column chromatography (0%-5% methanol in dichloromethane gradient elution) to yield the title compound (49 mg, 61%) as a white solid.

Provenance & Evidence