Diisopropylethylamine → HCID 178453004, compound

Participants

Reaction Steps

To a solution of compound 2-tert-butoxycarbonylamino-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (2.78 g, 0.01 mol) in DMF (40 mL) was added DIPEA (3.9 g, 0.03 mol), HATU (3.8 g, 0.01 mol) and 5-(5-chloro-2-difluoromethoxyphenyl)-1H-pyrazol-4-ylamine (2.6 g, 0.01 mmol), and the reaction mixture was stirred at room temperature overnight. The reaction mixture was poured into water and the precipitate was collected to give the target compound as a solid (4 g, 77%). LCMS (Method 7) [M+Na]+=541.9, RT=1.20 min. 1H NMR (400 MHz, DMSO-d6) δ: (ppm) 13.13 (s, 1H), 9.58 (s, 2H), 9.2 (dd, 1H, J=7.2, 1.6 Hz), 8.58 (d, 1H, J=2), 8.27 (s, 1H), 7.60 (m, 2H), 7.23-7.04 (m, 3H), 1.48 (s, 9H).

Provenance & Evidence