Preparation of benzyl cyanide
30 g of pure
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are dissolved in 25 ml of water and the solution is added in a 500 ml round flask attached to a reflux condenser. Heat is applied and to this hot solution slowly 50 g of
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dissolved in an equal weight of alcohol are added. The reaction mixture is refluxed gently 3-4 hours. The liquid separates into two layers; the upper brown layer consisting of an alcoholic solution of benzyl cyanide and the lower of an aqueous solution of potassium chloride. The upper layer is separated and fractionally distilled. Alcohol first distills, a little water follows and, when the temperature reaches 210° C, the distillate consists of
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. The fraction passing between 210° C and 235° C is collected. The yield of
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is about 35 g.A Class-Book of Organic Chemistry, by J. B. Cohen, 4-5, 1919
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