反应详情

To a solution of 1.0 g of 4,4,4-trifluoro-3-methoxy-butyl p-toluenesulfonate and 0.8 g of methyl (3,3,3-trifluoropropylsulfonyl)acetate in 50 ml of dimethyl sulfoxide was added 0.4 g of potassium carbonate at room temperature, and the stirred at room temperature for 4 days. The reaction mixture was heated to 60° C., stirred at the same temperature for 20 hours, and then allowed to stand to cool to nearly room temperature. To the reaction mixture was added 10% hydrochloric acid, and then extracted with ethyl acetate. The organic layer was washed with a saturated sodium chloride aqueous solution, dried over anhydrous magnesium sulfate, and then concentrated under reduced pressure. The obtained residue was subjected to silica gel chromatography to obtain 0.62 g of methyl 6,6,6-trifluoro-5-methoxy-2-(3,3,3-trifluoropropylsulfonyl)hexanoate (hereinafter referred to as the present compound (24)).

1. temperatureThe reaction mixture was heated to 60° C.
2. stirringstirred at the same temperature for 20 hours
3. temperatureto cool to nearly room temperature
4. extractionextracted with ethyl acetate
5. washThe organic layer was washed with a saturated sodium chloride aqueous solution
6. dry with materialdried over anhydrous magnesium sulfate
7. concentrationconcentrated under reduced pressure