Oxidation of 2,3-Diphenylindone with 9-Hydroperoxy-9benzylfluorene.-A solution of the hydroperoxide (0.80 g., (0.0028 mole) in pyridine (5 ml.) was added to an ice-cooled solution of the indone (0.70 g., 0.0025 mole) and Triton B (0.1 ml.) in the same solvent (5 ml.), and the mixture was left at room temperature for 2 hours, acidified with acetic acid and poured into water.The precipitated product was filtered, dried, washed with cold alcohol (10 ml.) and recrystallized from the same solvent to afford 0.56 g. (yield 67%) of 2,3-diphenyUndone epoxide, m.p. and mixed m.p.15 144.5-155.5°. Evaporation of the alcoholic solutions and recrystallization of the residue from benzeneheptane, 1:3, gave 0.60 g. (yield 88%) of 9-benzylfluorenol, m.p. 141-144°.
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