Hydrochloric Acid → Methyl 6-bromo-5,5,6,6-tetrafluoro-2-(3,3,3-trifluoropropylsulfonyl)hexanoate

Beteiligte Stoffe

Reaktionsschritte

To a solution of 1.2 g of 1,4-dibromo-1,1,2,2-tetrafluorobutane and 1.0 g of methyl (3,3,3-trifluoropropylsulfonyl)acetate in 30 ml of dimethyl sulfoxide was added 0.2 g of sodium hydride (60% in oil) at room temperature. The mixture was stirred at the same temperature for 3 days. 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 0.50 g of methyl 6-bromo-5,5,6,6-tetrafluoro-2-(3,3,3-trifluoropropylsulfonyl)hexanoate (hereinafter referred to as the present compound (4)).

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