Water → HCID 58136322, compound

Participants

Reaction Steps

At −15° C., 1.5 ml (8.7 mmol) of trifluoromethanesulfonic anhydride were slowly added dropwise to a solution of 897 mg (4.35 mmol) of methyl 4-hydroxy-2-methyl-2,3-dihydro-1H-indene-2-carboxylate in 20 ml of pyridine. After warming to room temperature, the reaction mixture was stirred for another 2 h. 20 ml of water were then added and, after phase separation, the aqueous phase was extracted three times with ethyl acetate. The combined organic phases were washed with saturated sodium chloride solution and dried over sodium sulfate. After filtration, the solvent was removed to dryness under reduced pressure. The crude product obtained was purified by flash chromatography on silica gel (mobile phase cyclohexane/ethyl acetate 10:1). This gave 1100 mg (3.25 mmol, 75% of theory) of a colorless oil.

Provenance & Evidence