title: A Lewis acid-Lewis base bifunctional catalyst from a new mixed ligand.
abstract: Covalent attachment of quinine to a salen framework through a racemic linker gave a new mixed ligand in a 1:1 diastereomeric mixture, from which an active Lewis acid-Lewis base (LA*-LB*) bifunctional catalyst derived from Co(II) was discovered by the screening of metal complexes. The remarkable intramolecular bifunctional catalytic activity (1 mol % catalyst loading) of the new catalyst was demonstrated using a proof-of-principle reaction. [reaction: see text].
authors.affiliation: Department of Chemistry, University of Toledo, Toledo, Ohio 43606, USA. yun-ming.lin@utoledo.edu
authors.forename: Yun-Ming
authors.initials: YM
authors.lastname: Lin
authors.forename: Julie
authors.initials: J
authors.lastname: Boucau
authors.forename: Zhongtao
authors.initials: Z
authors.lastname: Li
authors.forename: Virginie
authors.initials: V
authors.lastname: Casarotto
authors.forename: Jinzhen
authors.initials: J
authors.lastname: Lin
authors.forename: Annie N
authors.initials: AN
authors.lastname: Nguyen
authors.forename: Jessica
authors.initials: J
authors.lastname: Ehrmantraut