Abstract
Synthesis of Benzoic Acid Derivatives from 3‐Ethoxymethylene‐2,4‐alkanediones and MalononitrileReaction of the 3‐ethoxymethylene‐2,4‐alkanediones 1a–c with malononitrile (2) gives the benzonitrile derivatives 3a–c. Compounds 4a–d are obtained by acid or basic hydrolysis of the nitrile group of 3a–c, Sandmeyer reaction leads to the halogenated benzonitriles 5a–f. Compounds 6a, b are available from 3a and O‐ethyl‐ and O‐allylhydroxylamine hydrochloride.
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