Hydrochloric Acid → Methyl 6,6-dimethyl-5-trifluoromethyl-2-(3,3,3-trifluoropropylsulfonyl)heptanoate

Participants

Reaction Conditions

Reaction Steps

To a solution of 2.9 g of 4,4-dimethyl-3-(trifluoromethyl)pentyl p-toluenesulfonate and 2.0 g of methyl (3,3,3-trifluoropropylsulfonyl)acetate in 30 ml of dimethyl sulfoxide was added 1.2 g of potassium carbonate at room temperature. The reaction mixture was heated to 90° C., stirred at the same temperature for 6 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 2.00 g of methyl 6,6-dimethyl-5-trifluoromethyl-2-(3,3,3-trifluoropropylsulfonyl)heptanoate (hereinafter referred to as the present compound (7)).

Provenance & Evidence