反应详情

A solution of 2-((1-methyl-1H-pyrazol-4-yl)amino)-7H-pyrrolo[2,3-d]pyrimidin-4-ol (5 g, 0.02 mol) in POCl3 (50 mL) was stirred at 120° C. for 4 hrs. After removal of POCl3 by rotary evaporation, water (37 mL) was added. The pH was adjusted to 10 by aq. NaOH (2 mol/L, 30 mL) and then extracted with EtOAc/THF (2:1, three×200 mL). The combined organic layers were concentrated to dryness to afford the title compound (2.8 g, 56% yield) as a brown solid, which was used as is in the next step.

1. customAfter removal of POCl3
2. customby rotary evaporation, water (37 mL)
3. additionwas added
4. extractionextracted with EtOAc/THF (2:1, three×200 mL)
5. concentrationThe combined organic layers were concentrated to dryness