title: Effect of chiral diene ligands in rhodium-catalyzed asymmetric addition of arylboronic acids to α,β-unsaturated sulfonyl compounds.
abstract: Asymmetric addition of arylboronic acids to α,β-unsaturated sulfonyl compounds proceeded in the presence of a rhodium catalyst coordinated with a chiral diene ligand to give high yields of the addition products with high enantioselectivity (96->99.5% ee). The diene ligand was proved to be essential for the formation of the addition products, while the use of a bisphosphine ligand mainly gave the cine-substitution product.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Japan. tnishi@kuchem.kyoto-u.ac.jp
authors.forename: Takahiro
authors.initials: T
authors.lastname: Nishimura
authors.forename: Yuka
authors.initials: Y
authors.lastname: Takiguchi
authors.forename: Tamio
authors.initials: T
authors.lastname: Hayashi