title: Facile synthesis of picene from 1,2-di(1-naphthyl)ethane by 9-fluorenone-sensitized photolysis.
abstract: A facile formation of picene was achieved by photosensitization of 1,2-di(1-naphthyl)ethane using 9-fluorenone as a sensitizer. This sensitized photoreaction is the first photochemical cyclization of ethylene-bridged naphthalene moieties to afford the picene skeleton. 5,8-Dibromopicene, prepared by this procedure using 1,2-di[1-(4-bromonaphthyl)]ethane as the substrate, was readily converted to novel functionalized picenes by conventional substitution and cross-coupling reactions.
authors.affiliation: Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan. hokamoto@cc.okayama-u.ac.jp
authors.forename: Hideki
authors.initials: H
authors.lastname: Okamoto
authors.forename: Minoru
authors.initials: M
authors.lastname: Yamaji
authors.forename: Shin
authors.initials: S
authors.lastname: Gohda
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Kubozono
authors.forename: Noriko
authors.initials: N
authors.lastname: Komura
authors.forename: Kaori
authors.initials: K
authors.lastname: Sato
authors.forename: Hisako
authors.initials: H
authors.lastname: Sugino
authors.forename: Kyosuke
authors.initials: K
authors.lastname: Satake