反应详情

To a stirring solution of 2-(benzyloxy)benzoic acid (2.55 g, 11.19 mmol) and oxalyl chloride (2.84 g, 22.39 mmol) in THF (20 mL) was added a few drops of DMF (0.012 mL, 0.153 mmol) at 0° C. The reaction mixture was allowed to warm to room temperature and further stirred 30 minutes, diluted with toluene and then solvent evaporated. The residue was taken up in THF (20 mL) and to this solution was added 2-chloro-6-(trifluoromethyl)pyridin-3-amine (2.0 g, 10.18 mmol) at 0° C. followed by the addition of triethylamine (4.68 mL, 33.6 mmol). The reaction mixture was allowed to stir 3 days at room temperature then quenched with saturated bicarbonate solution, extracted with EtOAc and solvent evaporated to afford title compound 72 (3.0 g, 73% yield) after purification by flash chromatography (0 to 100% ethyl acetate in hexane). LRMS (ESI): (calc) 406.07. (found) 407.4 (MH)+.

1. customsolvent evaporated
2. customthen quenched with saturated bicarbonate solution
3. extractionextracted with EtOAc and solvent
4. customevaporated