Diisopropylethylamine → HCID 76902960, compound

Participants

Reaction Steps

To a solution of 1-(4-fluorophenyl)-5-isopropylpyrazol-4-amine (0.03 g, 0.14 mmol) in DMF (1.0 mL) was added 2-[4-chloro-5-methyl-3-(trifluoromethyl)pyrazol-1-yl]-2-methyl-propanoic acid (0.037 g, 0.14 mmol), followed by diisopropylethylamine (0.042 g, 0.32 mmol) and HATU (0.057 g, 0.15 mmol). After stirring at room temperature for 1 h, the reaction was diluted with water and the aqueous layer was extracted with ethyl acetate (2×5 mL). The combined organic layers were washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo. The resulting crude product was purified by reverse phase HPLC (C18 column, acetonitrile-H2O with 0.1% TFA as eluent) to give the title compound as a white solid (0.025 g, 0.053 mmol, 39%). 1H NMR (400 MHz, CDCl3) δ 7.91 (d, J=0.6 Hz, 1H), 7.33-7.25 (m, 2H), 7.20-7.10 (m, 2H), 6.61 (s, 1H), 2.92 (m, 1H), 2.37 (s, 3H), 1.97 (s, 6H), 1.03 (d, J=7.1 Hz, 6H); MS: (ES) m/z calculated for C21H22ClF4N5O [M+H]+ 472.1, found 471.9.

Provenance & Evidence