反应详情

A stirred solution of phenyl 3-tert-butyl-1-cyclohexyl-1H-pyrazol-5-ylcarbamate (200 mg), N,N-Diisopropylethylamine (67 mg, 0.52 mmol) and 3-(6,7-dimethoxyquinazolin-4-yloxy)aniline (prepared as described in Example 113A) (80 mg, 0.26 mmol) in THF (1.0 mL) was heated at 60° C. for 15 h. After cooling to rt, the reaction solution was partitioned between dichloromethane and a saturated aqueous solution of sodium carbonate. The organic phase was separated and concentrated under reduced pressure. The crude product was purified via silica gel column chromatography (eluting with a gradient of 40:1 to 20:1 dichloromethane:methanol) then reverse-phase preparative HPLC to afford 1-(3-tert-butyl-1-cyclohexyl-1H-pyrazol-5-yl)-3-(3-(6,7-dimethoxyquinazolin-4-yloxy)phenyl)urea (55 mg, 10% over two steps) as a pale yellow solid. 1H NMR (400 MHz, DMSO-d6) δ 9.10 (s, 1H), 8.57 (s, 1H), 8.47 (s, 1H), 7.57-7.60 (m, 2H), 7.37-7.41 (m, 2H), 7.24 (m, 1H), 6.93 (m, 1H), 6.01 (s, 1H), 4.00 (s, 3H), 3.99 (s, 3H), 3.94 (m, 1H), 1.62-1.82 (m, 8H), 1.24-1.35 (m, 2H), 1.24 (s, 9H); LC-MS (ESI) m/z 545 (M+H)+.

1. customthe reaction solution was partitioned between dichloromethane
2. customThe organic phase was separated
3. concentrationconcentrated under reduced pressure
4. customThe crude product was purified via silica gel column chromatography (
5. washeluting with a gradient of 40:1 to 20:1 dichloromethane