Diisopropylethylamine → HCID 86694738, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-cyclopropyl-1H-pyrazol-3-amine (1.42 g, 11.5 mmol), 2,4-dichloro-6-(trifluoromethyl)pyrimidine (2.50 g, 11.5 mmol), DIPEA (4.05 mL, 23.0 mmol), and anhydrous EtOH (35 mL) was stirred at 70° C. under N2 for 22 h. The reaction mixture was concentrated in vacuo. The residue was diluted with EtOAc and the organic layer was washed sequentially with water and brine, dried (Na2SO4), filtered and concentrated in vacuo. Trituration with DCM afforded 1.80 g (51.5%) of 2-chloro-N-(5-cyclopropyl-1H-pyrazol-3-yl)-6-(trifluoromethyl)pyrimidin-4-amine (186) as a white solid: 1H NMR (400 MHz, DMSO-d6): δ 12.35 (br d, J=30.2 Hz, 1H), 10.97 (s, 1H), 8.14 (s, 0.50H, rotamer), 7.13 (s, 0.50H, rotamer), 6.38 (s, 0.50H, rotamer), 5.73 (s, 0.50H, rotamer), 1.91 (s, 1H), 0.98-0.90 (m, 2H), 0.70 (q, J=5.5 Hz, 2H); MS (ESI) m/z=304.2/306.2 [M+1]+.

Provenance & Evidence