反应详情

A mixture of 1,4-dioxa-8-aza-spiro[4.5]decane (11.08 mL), 2-chloro-5-ethylpyrimidine (7.50 mL), and ethyldiisopropylamine (15.50 mL) in tetrahydrofuran (60 mL) is heated under reflux for 30 min. After cooling to room temperature, the reaction mixture is diluted with dichloromethane and washed with 0.1 M citric acid and brine. The aqueous phase is basified with 1 M aqueous NaOH solution and extracted with dichloromethane. The combined organic phases are dried over MgSO4 and the solvent is evaporated in vacuo to give the title compound. LC (method 11): tR=1.10 min; Mass spectrum (ESI+): m/z=250 [M+H]+.

1. temperatureis heated
2. temperatureunder reflux for 30 min
3. washwashed with 0.1 M citric acid and brine
4. extractionextracted with dichloromethane
5. dry with materialThe combined organic phases are dried over MgSO4
6. customthe solvent is evaporated in vacuo