1,2-Dichloroethane → 5-Chloro-4-oxo-2,2-diphenylpentanenitrile

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Reaction Steps

A 265 g. portion of 4-chloro-2,2-diphenyl-4-pentenenitrile and 3.84 g. of bis(3-t-butyl-4-hydroxy-5-methylphenyl) sulfide were dissolved in 1 liter of 1,2-dichloroethane and heated to the reflux temperature, about 75°-80° C. To the mixture was added dropwise a solution of 276.9 g. of 3-chloroperbenzoic acid dissolved in 2.5 liters of 1,2-dichloroethane. The resulting solution was heated for 24 hours, and was then cooled to ambient temperature. Sodium sulfite solution was added until starch-iodide paper showed a negative test for peracid. The reaction mixture was then made basic by the addition of 135 g. of sodium bicarbonate in saturated aqueous solution, and the organic layer was then separated, washed with water and dried over sodium sulfate. The solvent was then evaporated away under vacuum to obtain 294.5 g. of crude product, which was crystallized from ethanol to obtain 194.3 g. of the product named in the heading, m.p. 102°-104° C.

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