title: An approach to benzophosphole oxides through silver- or manganese-mediated dehydrogenative annulation involving C-C and C-P bond formation.
abstract: Benzophosphole construction was achieved through the Ag(I) -mediated dehydrogenative annulation of phenylphosphine oxides with internal alkynes in a process involving CC and CP bond formation. A wide range of asymmetrical phenylacetylenes could be employed and the reactions proceeded with perfect regioselectivity. Moreover, the annulation could be conducted even at room temperature when a Mn(III) promoter was used in place of Ag(I) .
authors.affiliation: Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871 (Japan) http://www.chem.eng.osaka-u.ac.jp/∼miura-lab/index-Eng.htm.
authors.forename: Yuto
authors.initials: Y
authors.lastname: Unoh
authors.forename: Koji
authors.initials: K
authors.lastname: Hirano
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Satoh
authors.forename: Masahiro
authors.initials: M
authors.lastname: Miura
keywords: CC coupling; annulation; dehydrogenation; phosphorus heterocycles; radical reactions