Organocatalytic Asymmetric Friedel-Crafts Alkylation to γ-Hydroxy α,β-Unsaturated Aldehyde

In this communication, we describe the facile synthetic strategy of chiral β-substituted γ- lactones and 3-substituted tetr ahydrofurans by the reduction and oxidation of chiral β-substituted γ-lactols respectively, which are prepared by new catalytic asymmetric Friedel-Crafts alkyla-tion of appropriate nucleophiles to a γ-hydroxy α,β-unsaturated aldehyde using an organocatalyst.

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