title: Monophosphaporphyrins: oxidative pi-extension at the peripherally fused carbocycle of the phosphaporphyrin ring.
abstract: The 18pi-sigma3- and 22pi-sigma4-phosphaporphyrins were successfully prepared by an acid-promoted condensation between a phosphatripyrrane and a 2,5-bis[hydroxy(phenyl)methyl]pyrrole, and their structures, aromaticity, and optical and electrochemical properties were disclosed. Notably, a sigma4-phosphaporphyrinogen and the 18pi-sigma3-phosphaporphyrin undergo oxidative pi-extension at the peripherally fused carbocycle to afford the 22pi-sigma4-phosphaporphyrin.
authors.affiliation: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan. matano@scl.kyoto-u.ac.jp
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Matano
authors.forename: Makoto
authors.initials: M
authors.lastname: Nakashima
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakabuchi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Imahori
authors.forename: Shinya
authors.initials: S
authors.lastname: Fujishige
authors.forename: Haruyuki
authors.initials: H
authors.lastname: Nakano