Pyrazole → 3-(1H-Pyrazol-1-yl)-N-[(1S,2S)-2-{[5-(trifluoromethyl)pyrazin-2-yl]amino}cyclopentyl]pyridine-2-carboxamide

Participants

Reaction Steps

A solution of 3-bromo-N-[(1S,2S)-2-{[5-(trifluoromethyl)pyrazin-2-yl]amino}cyclopentyl]pyridine-2-carboxamide (Example 28; 100 mg, 0.23 mmol), 1H-pyrazole (CAS number 288-13-1; 32 mg, 0.47 mmol), cesium carbonate (151 mg, 0.47 mmol), copper (I) iodide (2.2 mg, 0.012 mmol) and trans-1-N,2-N-dimethylcyclohexane-1,2-diamine (1.7 mg, 0.012 mmol) in dry DMF (0.8 ml) was subjected to microwave irradiation at 120° C. for 1 hour. The reaction mixture was diluted with ethyl acetate and washed with water (×3) and brine, filtered through a hydrophobic frit and concentrated in vacuo. The resulting residue was purified by reverse phase preparative HPLC (eluted with acetonitrile/water containing 0.1% ammonia) to afford the title compound.

Provenance & Evidence