反应详情

A mixture of 3-(2,5-dichloropyrimidin-4-yl)pyrazolo[1,5-a]pyridine (Intermediate 21, 575 mg, 1.86 mmol) and 2-methoxy-4-(1-methyl-3,6-dihydro-2H-pyridin-4-yl)-5-nitroaniline (Intermediate 3, 490 mg, 1.86 mmol) was stirred in THF (30 mL) and cooled in an ice/water bath. Lithium bis(trimethylsilyl)amide (4.10 mL, 4.10 mmol, 1M in THF) was then added dropwise and the mixture was stirred for 1 h. CH3OH was added and the mixture was concentrated in vacuo. The crude material was suspended in CH3OH and the mixture was filtered. The collected solid was washed with CH3OH and diethyl ether and dried on the filter to give the title compound (660 mg, 72%) as a yellow powder; 1H NMR: 2.29 (3H, s), 2.30-2.38 (2H, m), 2.58 (2H, t), 2.97 (2H, dd), 3.96 (3H, s), 5.60-5.68 (1H, m), 7.00 (1H, s), 7.16 (1H, td), 7.36-7.45 (1H, m), 8.49-8.56 (3H, m), 8.87 (1H, d), 8.90 (1H, s), 8.97 (1H, s); m/z: ES+ MH+ 492.4.

1. temperaturecooled in an ice/water bath
2. concentrationthe mixture was concentrated in vacuo
3. filtrationthe mixture was filtered
4. washThe collected solid was washed with CH3OH and diethyl ether
5. customdried on the
6. filtrationfilter