Chiral Phosphoric Acid Catalyzed Enantioselective Allylation of Aldehydes with Allyltrichlorosilane

Easily accessible chiral phosphoric acid 1b has been applied as efficient organocatalyst for the asymmetric allylation of aldehydes with allyltrichlorosilane. In the presence of 20 mol% of 1b, the allylation of a broad range of aldehydes proceeded smoothly to give the corresponding homoallylic alcohol with up to 87% ee and 97% yield.