Hydrochloric Acid → 2-Cyanomethyl-6-methoxy-1-tetralone

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Reaction Steps

13.5 g of 2-dimethylaminomethyl-6-methoxy-1-tetralone hydrochloride (C. A. 41, 6253 g) are dissolved in 200 ml of water and 4 ml of concentrated hydrochloric acid are added, followed by the concentrated aqueous solution of 6.5 g of potassium cyanide, introduced below the surface of the liquid. The mixture is refluxed for one hour, stirred at room temperature overnight and filtered, to yield the 2-cyanomethyl-6-methoxy-1-tetralone melting at 90°-93°. Similarly prepared are the following nitriles: 2-cyanomethyl-1-tetralone, b.p. 125°-30°/0.005 mm Hg; 2-cyanomethyl-6,7-dimethoxy-1-tetralone, m.p. 116°-118°; 2-cyanomethyl-7-methoxy-1-tetralone, m.p. 80°-84°: 2-cyanomethyl-5-methoxy-1-tetralone, m.p. 91°-94°.

Provenance & Evidence