反应详情

温度

70 °C

To a stirred solution of 2-[3-[2-(4,6-Dimethyl-pyridin-2-yl)-vinyl]-1-(tetrahydro-pyran-2-yl)-1H-indazol-6-ylamino]-benzoic acid methyl ester (1.98 g, 4.11 mmol) in THF:MeOH (12 ml, 3:1) was added Potassium hydroxide (1.15 g, 20.5 mmol) dissolved in H2O (3 ml). The reaction was heated at 70° C. for 2 hr, cooled, concentrated under reduced pressure to about 5 ml and diluted with more water. The solution was neutralized with 2N HCl and the precipitate was collected by filtration and washed with water to give 2.00 g (quantitative) of a bright yellow solid. 1H NMR (DSMO-d6) δ 513.12 (1H, broad s), 9.82 (1H, s), 8.13 (1H, d, J=8.7 Hz), 7.95 (1H, dd, J=1.5, 8.0 Hz), 7.89 (1H, d, J=16.4 Hz), 7.60 (1H, s), 7.50 (1H, d, J=16.4 Hz), 7.46 (1H, d, J=6.9 Hz), 7.37 (1H, d, J=7.7 Hz), 7.20 (1H, d, J=8.7 Hz), 7.06 (1 H, s), 6.86 (1H, t, J=6.9 Hz), 5.85 (1H, d, J=7.3 Hz), 3.82 (2H, m), 2.50 (3H, s, obscured by dmso), 2.48 (2H, m), 2.34 (3H, s), 2.03 (2H, m), 1.76 (1H, m), 1.59 (2H, m). Anal. Calcd for C28H28N4O3.0.5 KOH: C, 67.72; H, 5.79; N, 11.28.

1. temperaturecooled
2. concentrationconcentrated under reduced pressure to about 5 ml
3. additiondiluted with more water
4. filtrationthe precipitate was collected by filtration
5. washwashed with water
6. customto give 2.00 g (quantitative) of a bright yellow solid