反应详情

A solution of acryloyl chloride (0.042 mL, 0.51 mmol) in CH2Cl2 (1 mL) was added dropwise to a mixture of N-(5-chloro-4-pyrazolo[1,5-a]pyridin-3-ylpyrimidin-2-yl)-4-[(3R)-3-dimethylamino-pyrrolidin-1-yl]-6-methoxybenzene-1,3-diamine (Intermediate 18, 245 mg, 0.51 mmol) and DIPEA (0.097 mL, 0.56 mmol) in CH2Cl2 (10 mL), which was cooled in an ice/water bath. The mixture was stirred for 2 h and then washed with brine, dried (Na2SO4) and concentrated in vacuo. Purification by FCC, eluting with 2% 7N methanolic ammonia in CH2Cl2 gave a foam after concentration in vacuo. This foam was triturated using CH2Cl2 and diethyl ether, and the resulting solid was collected by filtration and dried to give the title compound (157 mg, 58%) as a yellow solid; 1H NMR: 1.68-1.83 (1H, m), 2.05-2.16 (1H, m), 2.18 (6H, s), 2.64-2.76 (1H, m), 3.18-3.29 (3H, m), 3.36-3.47 (1H, m), 3.77 (3H, s), 5.67 (1H, dd), 6.16 (1H, dd), 6.48 (1H, dd), 6.54 (1H, s), 7.12 (1H, t), 7.37 (1H, t), 7.43 (1H, s), 8.28-8.46 (2H, m), 8.55 (1H, s), 8.83 (1H, d), 8.94 (1H, s), 9.37 (1H, s); m/z: ES+ MH+ 533.5.

1. temperaturewas cooled in an ice/water bath
2. washwashed with brine
3. dry with materialdried (Na2SO4)
4. concentrationconcentrated in vacuo
5. customPurification by FCC
6. washeluting with 2% 7N methanolic ammonia in CH2Cl2
7. customgave a foam
8. concentrationafter concentration in vacuo
9. customThis foam was triturated
10. filtrationthe resulting solid was collected by filtration
11. customdried