Methanol → HCID 68585446, compound

Participants

Reaction Conditions

Reaction Steps

A solution of S)-5-bromo-6-(1-tert-butoxy-2-ethoxy-2-oxoethyl)-2,7-dimethylquinoline 1-oxide (497 mg, 1.21 mmol) in acetic acid (12 mL) was heated at 80° C. for 15 minutes. To the solution was added acetic anhydride (1.37 mL, 14.5 mmol) and the resulting solution was heated at 110° C. for 2 hours. The reaction mixture was cooled to 50° C. and methanol (6 mL) was added and stirred for 1 hour. The reaction was cooled to room temperature and concentrated. The resultant oil was taken up in tetrahydrofuran (20 mL) to which was added 6 M potassium hydroxide (20 mL) and stirred for 1 hour. The product was extracted with ethyl acetate and the organic layer was concentrated and purified by flash column chromatography (silica gel, ethyl acetate/hexanes) to give a yellow oil (366 mg, 74%). LCMS-ESI+ (m/z):

Provenance & Evidence