title: Asymmetric synthesis of axially chiral biaryl diphosphine ligands by rhodium-catalyzed enantioselective intramolecular double [2 + 2 + 2] cycloaddition.
abstract: The concise synthesis of axially chiral biaryl diphosphine ligands by the rhodium-catalyzed intramolecular [2 + 2 + 2] cycloaddition of hexayne diphosphine oxides has been achieved. These new chiral diphosphine ligands could be employed as a ligand for the rhodium-catalyzed asymmetric catalyses.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
authors.forename: Fumiya
authors.initials: F
authors.lastname: Mori
authors.forename: Naohiro
authors.initials: N
authors.lastname: Fukawa
authors.forename: Keiichi
authors.initials: K
authors.lastname: Noguchi
authors.forename: Ken
authors.initials: K
authors.lastname: Tanaka