Novel Chiral Bisformamide-Promoted Asymmetric Allylation of Benzaldehyde with Allyltrichlorosilane
作者:Kaori Ishimaru、Kaori Ono、Yuya Tanimura、Takakazu Kojima
DOI:10.1080/00397911.2010.519841
日期:2011.12.15
Novel chiral bisformamides have been prepared from (R,R)-1,2-cyclohexanediamine and utilized as Lewis bases in the asymmetric allylation of benzaldehyde with allyltrichlorosilane. The reaction in the presence of Lewis base 1i gave an 83:17 enantiomeric ratio (R/S) of the products in 90% isolated yield.
Asymmetric allylation reactions of aromatic aldehydes with allyltrichlorosilane catalyzed by chiral bisformamide-type organocatalysts
作者:Yuya Tanimura、Kaori Ishimaru
DOI:10.1016/j.tetasy.2012.02.015
日期:2012.3
Asymmetricallylation reactions of aromatic aldehydes with allyltrichlorosilane were catalyzed by C2-symmetrical chiral bisformamides in the presence of potassium carbonate and potassium phosphate, to afford the corresponding homoallylic alcohols in excellent yields with up to 83% ee.