Dimethylformamide → 4-(4-Trifluoromethylpyrid-3-ylcarbonylamino)-2-phenylbenzoic acid 2-trimethylsilylethyl ester

Participants

Reaction Steps

A mixture of 4-trifluoromethylnicotinic acid (472 mg, 2.46 mmol), the product of Example 283B (771 mg, 2.46 mmol), 3-hydroxy1,2,3-benzotriazin-4(3H)-one (481 mg, 2.95 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (566 mg, 2.95 mmol) in DMF (8 mL) was stirred room temperature for 15 hours. The reaction mixture was diluted with ethyl acetate (100 mL), washed with water and brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography (30% ethyl acetate-hexane) to give the title compound (1.04 g, 87%).

Provenance & Evidence