Hydrochloric Acid → 1-{2-[(3,5-Bis-trifluoromethyl-benzyl)-(2-fluoro-5-trifluoromethyl-benzyl)-amino]-pyrimidin-5-yl}-piperidine-4-carboxylic acid

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Reaction Steps

1-{2-[(3,5-Bis-trifluoromethyl-benzyl)-(2-fluoro-5-trifluoromethyl-benzyl)-amino]-pyrimidin-5-yl}-ethyl piperidine-4-carboxylate (105 mg) is dissolved in ethanol (4 ml) and thereto is added a 1N-aqueous sodium hydroxide solution (2 ml), and the mixture is stirred at room temperature for 2 hours. To the reaction solution are added 1N-hydrochloric acid and ethyl acetate, and the mixture is separated, and the organic layer is washed with a saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (chloroform:methanol=1:0→9:1) to give 1-{2-[(3,5-bis-trifluoromethyl-benzyl)-(2-fluoro-5-trifluoromethyl-benzyl)-amino]-pyrimidin-5-yl}-piperidine-4-carboxylic acid (81 mg). MS (m/z): 625 [M+H]+

Provenance & Evidence