Metal‐Bridged Polymers as Insoluble Multicomponent Asymmetric Catalysts with High Enantiocontrol: An Approach for the Immobilization of Catalysts without Using any Support

Abstract

Immobile without support: The first synthesis of chiral Al-bridged and Ti-bridged polymers by a metal-mediated self-assembly of (R,R)-6,6′-bi(binol) (binol=1,1′-bi-2-naphthol), which bears two pairs of phenolic hydroxy groups at the opposite sides in the molecule, is described (see scheme, X=OH or O). The polymers are found to promote asymmetric Michael reaction and carbonyl–ene reaction with high enantioselectivity and can be reused. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2003/z52354_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.