Phenylacetonitrile → Ethyl 3-cyano-3-phenylpyruvate

Beteiligte Stoffe

Reaktionsschritte

A mixture of 117.1 g. (1.0m.) of phenylacetonitrile and 326 ml. (2.4m.) of ethyl oxalate is added to an ethanol solution of sodium ethoxide (prepared by dissolving 23.8 g., 1.08m. of sodium in 500 ml. of absolute ethanol) and refluxed two hours. After cooling, diluting with 2500 ml. of water and extracting with ether, the solution is acidified with acetic acid. The solid is removed and washed with water to give ethyl 3-cyano-3-phenylpyruvate, m.p. 127°-129° C.

Herkunft & Nachweise