title: Palladium-catalyzed synthesis of dibenzophosphole oxides via intramolecular dehydrogenative cyclization.
abstract: Dibenzophosphole oxides were obtained from secondary hydrophosphine oxides with a biphenyl group by dehydrogenation via phosphine-hydrogen and carbon-hydrogen bond cleavage in the presence of a catalytic amount of palladium(II) acetate, Pd(OAc)(2). By using this reaction, a ladder-type dibenzophosphole oxide could also be synthesized by double intramolecular dehydrogenative cyclization.
authors.affiliation: Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Tsushima, Okayama 700-8530, Japan. kuninobu@cc.okayama-u.ac.jp
authors.forename: Yoichiro
authors.initials: Y
authors.lastname: Kuninobu
authors.forename: Takuya
authors.initials: T
authors.lastname: Yoshida
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Takai
mesh_terms: D002384:Catalysis; D003500:Cyclization; D006865:Hydrogenation; D009682:Magnetic Resonance Spectroscopy; D010087:Oxides / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D010087:Oxides; D010165:Palladium