Diisopropylethylamine → 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[5-fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzyl]-urea

Participants

Reaction Conditions

Reaction Steps

5-Fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzylamine (6v) (50 mg, 0.15 mmol), (5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-carbamic acid 2,2,2-trifluoro-ethyl ester (b) (75 mg, 0.18 mmol) and diisopropylethylamine (0.038 mL, 0.22 mmol) were combined in DMF (1.5 mL) and heated at 85° C. for 3 hours. The reaction was cooled and concentrated in vacuo and purified by column chromatography (silica, 40 to 60% EtOAc/hexanes/0.25% Et3N) to provide 1-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-3-[5-fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzyl]-urea (8v) (30 mg, 34% yield). 1H NMR (400 MHz, CDCl3) δ 7.78 (d, J=8.6 Hz, 1H), 7.31 (d, J=7.0 Hz, 2H), 7.20 (d, J=7.8 Hz, 2H), 7.02-6.88 (m, 5H), 6.17 (s, 1H), 6.02 (s, 1H), 5.30 (t, J=8.6 Hz, 1H), 4.36 (d, J=5.5 Hz, 2H), 3.98 (s, 2H), 2.60 (s, 4H), 2.36 (s, 3H), 1.80 (s, 4H), 1.32 (s, 9H); MS (ESI+) m/z 597 (M+H) detected; HPLC (5 to 95%) 2.93 min.

Provenance & Evidence