title: Coupling reactions of alpha-bromoalkenyl phosphonates with aryl boronic acids and alkenyl borates.
abstract: [reaction: see text] Transition metal-catalyzed arylation and alkenylation of the alpha-bromoalkenyl phosphonates were investigated with organoboranes and -borates. Arylation was successful with the aryl boronic acids and a palladium catalyst, while alkenylation was found to proceed with alkenyl borates and a nickel catalyst. In addition, an intramolecular Diels-Alder reaction of the diene prepared by the alkenylation afforded the corresponding adduct.
authors.affiliation: Department of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8501, Japan. ykobayas@bio.titech.ac.jp
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Anthony D
authors.initials: AD
authors.lastname: William