反应详情

To a solution of 4-(3-oxa-1-azaspiro[4.5]dec-1-en-2-yl)phenol ax8 (0.5 g, 2.16 mmol, 1 eq) in acetone (30 ml) is added 1-bromo-3-chloro-2-methylpropane (0.25 ml, 2.16 mmol, 1 eq) and potassium carbonate (0.6 g, 4.32 mmol, 2 eq). The mixture is stirred at reflux for 13 days. The mixture is concentrated, taken up in dichloromethane and washed twice with a saturated aqueous solution of ammonium chloride. The organic layer is dried over magnesium sulfate and the solvent is removed under reduced pressure to afford 0.7 g of 2-[4-(3-chloro-2-methylpropoxy)phenyl]-3-oxa-1-azaspiro[4.5]dec-1-ene ax64 as a colorless oil. This crude product is used in the next step without further purification.

1. temperatureat reflux for 13 days
2. concentrationThe mixture is concentrated
3. washwashed twice with a saturated aqueous solution of ammonium chloride
4. dry with materialThe organic layer is dried over magnesium sulfate
5. customthe solvent is removed under reduced pressure