反应详情

温度

-40 °C

To solution of 2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidine 4 (1.22 g) in anhydrous tetrahydrofuran (20 ml) stirring at −78° C. was added 2.5M n-butyllithium in hexanes (2.3 mL). The reaction mixture was warmed gradually to −40° C. over 1 hour, cooled to −78° C., and 1-BOC-4-Piperidone (950 mg) was added. The reaction mixture was gradually warmed to room temperature and then left to stir for 2 hours, poured into ice/water and extracted into ethyl acetate. After the usual drying and evaporation of the solvent, the residue was purified by flash chromatography to give 4-(2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidin-6-yl)-4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester.

1. temperaturecooled to −78° C.
2. temperatureThe reaction mixture was gradually warmed to room temperature
3. waitleft
4. extractionextracted into ethyl acetate
5. customAfter the usual drying
6. customevaporation of the solvent
7. customthe residue was purified by flash chromatography