Potassium Carbonate → 1-[1-(4-Fluorophenyl)-5-isopropylpyrazol-4-yl]-3-[4-(trifluoromethyl)imidazol-1-yl]pyrrolidin-2-one

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-bromo-1-[1-(4-fluorophenyl)-5-isopropyl-pyrazol-4-yl]pyrrolidin-2-one (0.020 g, 0.055 mmol), 4-(trifluoromethyl)-1H-imidazole (0.024 g, 0.17 mmol) and K2CO3 (0.030 g, 0.22 mmol) in DMF (0.6 mL) was stirred at 60° C. for 1 hr. The mixture was then cooled to room temperature, quenched with water (30 mL) and extracted with EtOAc (50 mL). The organic layer was separated, dried over anhydrous sodium sulfate, concentrated in vacuo and purified by reverse phase HPLC (C18 column, acetonitrile-H2O with 0.1% TFA as eluent) to yield the title compound (0.022 g, TFA salt, 75%); 1H NMR (TFA salt) (400 MHz, CDCl3) δ 7.98 (s, 1H), 7.59 (s, 1H), 7.51 (s, 1H), 7.39 (dd, J=8.4, 4.8 Hz, 2H), 7.20 (dd, J=8.6, 8.6 Hz, 2H), 5.06 (dd, J=10.8, 8.8 Hz, 1H), 3.90 (m, 1H), 3.83 (m, 1H), 2.98 (m, 2H), 2.54 (m, 1H), 1.21 (d, J=7.2 Hz, 3H), 1.20 (d, J=7.2 Hz, 3H); MS: (ES) m/z calculated for C20H19F4N5O (free form) [M+H]+ 422.1. found 422.1.

Provenance & Evidence