N,N-Diethylaniline → HCID 20185126, compound

Participants

Reaction Steps

A solution of 1.09 g. (5.02 mmoles) of 1-ethyl-5-allyloxyoxindole in 5 ml. of N,N-diethylaniline was heated at reflux for 1 hour. The cooled reaction was added to ice cold 1N hydrochloric acid and the mixture extracted with methylene chloride. The extract was washed with water (3×), saturated brine solution (1×) and dried over magnesium sulfate. The residue remaining after the solvent was removed was chromatographed on 22 g. of silica gel using 50-100% diethyl ether-hexane as the eluent to give 134 mg. (12% yield) of 1-ethyl-4-allyl-5-hydroxyoxindole and 644 mg. (59% yield) of 1-ethyl-5-hydroxy-6-allyloxindole, m.p. 130°-131° C.

Provenance & Evidence