反应详情

温度

70 °C

Triethylamine (3.55 mL, 25.45 mmol) was added to 5-bromo-4-chloro-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine (Intermediate 61) (3.28 g, 8.48 mmol) and methyl 4-(tert-butoxycarbonylamino)piperidine-4-carboxylate (WO2008075109) (3.07 g, 11.88 mmol) in DMA (50 mL) at 20° C. The resulting suspension was stirred at 70° C. for 2 hours. The reaction mixture was concentrated and diluted with EtOAc (200 mL), and washed sequentially with water (75 mL) and saturated brine (75 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 30 to 70% EtOAc in isohexane. Pure fractions were evaporated to dryness to afford methyl 1-(5-bromo-7-tosyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl)-4-(tert-butoxycarbonylamino)piperidine-4-carboxylate (3.60 g, 69.7%) as a white solid.

1. concentrationThe reaction mixture was concentrated
2. additiondiluted with EtOAc (200 mL)
3. washwashed sequentially with water (75 mL) and saturated brine (75 mL)
4. dry with materialThe organic layer was dried over MgSO4
5. filtrationfiltered
6. customevaporated
7. customto afford crude product
8. customThe crude product was purified by flash silica chromatography, elution gradient 30 to 70% EtOAc in isohexane
9. customPure fractions were evaporated to dryness