反应详情

温度

60 °C

To a solution of 1.0 g of 6-chloro-1-hexyne and 2.0 g of methyl (3,3,3-trifluoropropylsulfonyl)acetate in 50 ml of dimethyl sulfoxide, 0.3 g of sodium hydride (60% in oil) was added at room temperature. The mixture was stirred at room temperature for 12 hours, at 60° C. for 2 hours and then at 90° C. for 10 hours. The reaction mixture was allowed to stand near room temperature, and 10% hydrochloric acid was added thereto, followed by extraction 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 1.50 g of methyl 2-(3,3,3-trifluoropropylsulfonyl)-7-octynoate (hereinafter referred to as the present compound (1)).

1. waitat 90° C. for 10 hours
2. customto stand near room temperature
3. extractionfollowed by extraction with ethyl acetate
4. washThe organic layer was washed with a saturated sodium chloride aqueous solution
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated under reduced pressure