Diisopropylethylamine → HCID 178521020, compound

Participants

Reaction Steps

3,3-Difluoroazetidine (33 mg, 0.2 mmol) was added to a mixture of (R)-1-(2-(1-(4-chloro-1H-pyrazol-1-yl)cyclopropyl)-3H-imidazo[4,5-b]pyridin-5-yl)piperidine-3-carboxylic acid (100 mg, 0.25 mmol), diisopropylethylamine (0.1 mL, 0.77 mmol) and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′,-tetramethyluronium hexafluorophosphate (HATU) (118 mg, 0.31 mmol) in anhydrous dichloromethane (5 mL) at room temperature. The reaction mixture was stirred for 2 h, then partitioned between dichloromethane and water. The organics were dried over sodium sulfate, filtered and concentrated under reduced pressure. The crude material was purified via preparative TLC to afford the title compound (40 mg, 43% yield). MS (ES+) (M+H) 462.2; LCMS retention time 2.163 minutes (Method N1). 1H NMR (300 MHz, CDCl3) δ 1.17-1.39 (m, 1H), 1.71-2.24 (m, 7H), 2.35-2.58 (m, 1H), 2.83-3.13 (m, 2H), 4.04-4.78 (m, 6H), 6.63 (d, 1H), 7.62 (s, 2H), 7.69-7.80 (m, 1H), 9.15 (br s, 1H).

Provenance & Evidence