Ethanol → HCID 57827608, compound

Participants

Reaction Conditions

Reaction Steps

Ethanol (100 mL) was added to a solution of ethyl 2-trifluoromethanesulfonyloxycyclohex-1-enecarboxylate obtained in Preparation Example 1-(1) (17.0 g) in toluene (200 mL). 2-Fluorophenylboronic acid (7.74 g) and tetrakis(triphenylphosphine)palladium (1.60 g) were added. A 1 N sodium carbonate solution (55.3 mL) was added, followed by replacement of the reaction atmosphere with nitrogen. The reaction solution was heated to 80° C. and stirred for eight hours. After returning to room temperature, the excess of ethanol was evaporated under reduced pressure and the residue was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate. The drying agent was removed by filtration and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography to obtain the title compound (10.5 g).

Provenance & Evidence