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À propos de : Chiral Lewis Acid-Catalyzed Asymmetric Baylis−HillmanReactions        

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  • Chiral Lewis Acid-Catalyzed Asymmetric Baylis−HillmanReactions
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  • An effective chiral Lewis acid-catalyzed asymmetric Baylis−Hillman reaction is described. Goodto high enantioselectivities were obtained using 3 mol % chiral catalyst. Novel camphor-deriveddimerized ligands were prepared from the condensation of (+)-ketopinic acid with the correspondingdiamines and hydrazine under acidic conditions. When α-naphthyl acrylate was used as a Michaelacceptor, the reaction is complete within 20 min with high stereoselectivity and in reasonablechemical yields.
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