1-Cyclopropyl-1H-pyrazole-3-carboxylic acid (0.30 g, 1.29 mmol) was dissolved in DCM (20 ml). EDCI (0.692 g, 3.61 mmol), HOBt (0.487 g, 3.61 mmol) and DIPEA (0.932 g, 7.22 mmol) were added at 0° C. to the solution. The resulting mixture was stirred at 0° C. for 15 min. (S)-4-(1-(2-Aminopropyl)-1H-pyrazol-3-yl)-2-chloro-6-fluorobenzonitrile (0.502 g, 1.8 mmol) dissolved in DCM (2 ml) was added and the mixture was stirred overnight. The reaction mixture was quenched by the addition of water and extracted with DCM. The organic layer was evaporated and the residue was purified by flash chromatography. Yield: 400 mg. 1H-NMR (400 MHz; DMSO-d6): δ 0.97-1.17 (m, 7H), 3.74-3.80 (m, 1H), 4.26-4.41 (m, 3H), 6.53 (d, 1H), 7.01 (d, 1H), 7.82-7.87 (m, 3H), 7.96 (s, 1H), 8.14 (d, 1H).
