1-Hydroxybenzotriazole → HCID 53241298, compound

Participants

Reaction Steps

To a stirred solution of 4-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-benzoic acid (1.75 g) (prepared according to WO 2009/080250) in acetonitrile (35 ml) and triethylamine (2.04 ml) were added under nitrogen atmosphere TBTU (1.61 g), AZA.HOBT (0.68 g) and C-(2-Benzyl-isoxazolidin-5-yl)-methylamine (Step B, 1.61 g) were added. The resulting solution was stirred at room temperature for 4 hours, then quenched by addition of aqueous saturated ammonium chloride solution. The mixture was then extracted with ethyl acetate, dried over sodium sulfate, filtered then concentrated in vacuo. The residue purified by column chromatography (ethyl acetate/cyclohexane 1:1) to afford the title compound as a white solid (60 mg, (mixture of diasteroisomers). LCMS (Method F) 2.20 min, M+H 636/638.

Provenance & Evidence