The Benary reaction is an organic reaction. In 1931 Erich Bénary [1] [2] discovered that β-(N,N-dialkylamino)-vinyl ketones reacted with Grignard reagents in a 1,4-addition to give α,β-unsaturated ketones, α,β-unsaturated aldehydes and α,β-unsaturated esters as well as poly-unsaturated ketones and aldehydes [3] after hydrolysis of the reaction intermediate and elimination of a dialkylated amine.
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