Lithium Hydroxide → HCID 86592795, compound

Participants

Reaction Steps

A solution of 1-(4-fluoro-phenyl)-5-trifluoromethyl-1H-pyrazole-4-carboxylic acid (0.200 g, 0.731 mmol, prepared in example 635) in DMF (4.0 mL) was reacted with 2-L-amino-3-biphenyl-4-yl-propionic acid methyl ester hydrochloride (0.213 g, 0.731 mmol), HBTU (0.277 g, 0.731 mmol), and DIEA (0.450 mL, 2.566 mmol) as described in general procedure A. The crude compound was purified by flash column chromatography on silica gel using CHCl3 (+10% hexane) to give 0.150 g (41%) of 3-biphenyl-4-yl-2-{[1-(4-fluoro-phenyl)-5-trifluoromethyl-1H-pyrazole-4-carbonyl]-amino}-propionic acid methyl ester. A solution of this ester (0.085 g, 0.166 mmol) in THF (3.0 mL) was treated with LiOH (0.025 g) by general procedure I to afford (0.070 g, 85%) of the title compound 3-Biphenyl-4-yl-2-{[1-(4-fluoro-phenyl)-5-trifluoromethyl-1H-pyrazole-4-carbonyl]-amino}-propionic acid as a white solid. LCMS: 498 (M+1)+. 1H NMR (DMSO-d6) 8.94 [d, 1H], 8.08 [s, 1H], 7.58 [m, 6H], 7.42 [m, 7H], 4.63 [m, 1H], 3.22 [m, 1H], 3.04 [m, 1H].

Provenance & Evidence