反应详情

Into a 16 mL reaction vial was placed sodium hydride (7.8 mg, 60% in oil, 0.195 mmol) and 0.5 mL of THF. 4-Hydroxy-piperidine-1-carboxylic acid tert-butyl ester (10 mg, 0.0487 mmol) was added to the suspension and the mixture was stirred 20 min under N2 at room temperature, followed by the slow addition of 4-chloro-1-(4-methanesulfonyl-phenyl)-1H-pyrazolo[3,4-d]pyrimidine (10 mg, 0.0325 mmol). After stirring overnight under N2 at room temperature, all of the starting chloropyrazolopyrimidine had been converted as indicated by LCMS. The reaction mixture was then concentrated under vacuum and purified by flash column chromatography using 50% EtOAc/Hex as eluent. 1H NMR (CDCl3, 400 MHz) δ 1.49 (s, 9H), 1.85 (m, 2H), 2.09 (m, 2H), 3.10 (s, 3H), 3.32 (m, 2H), 3.86 (m, 2H), 5.60 (m, 1H), 8.09 (d, 2H), 8.26 (s, 1H), 8.61 (d, 2H), 8.66 (s, 1H). LCMS: calculated for C22H27N5S 473.17, observed 474.4 (MH+)

1. customInto a 16 mL reaction
2. stirringAfter stirring overnight under N2 at room temperature
3. concentrationThe reaction mixture was then concentrated under vacuum
4. custompurified by flash column chromatography