反应详情

To a solution of (S)-tert-butyl pyrrolidin-3-ylcarbamate (0.50 g, 2.7 mmol, 1 eq) and diisopropylamine (0.66 mL, 3.8 mmol, 1.4 eq) in 0.2 mL of NMP was added 4-chloropyrazolo[1,5-a]pyrazine (0.47 mL, 3.1 mmol, 1.1 eq). After stirring for 1 h at room temperature, the mixture was concentrated and purified by silica gel column chromatography (100% EtOAc) to afford (S)-tert-butyl (1-(pyrazolo[1,5-a]pyrazin-4-yl)pyrrolidin-3-yl)carbamate (0.740 g, 2.4 mmol, 91%).

1. concentrationthe mixture was concentrated
2. custompurified by silica gel column chromatography (100% EtOAc)