title: Subporphyrins with an axial B-C bond.
abstract: Axial fabrications of subporphyrins have been conveniently accomplished by the reaction of B(methoxo)triphenylsubporphyrin with Grignard reagents such as aryl-, heteroaryl-, ferrocenyl-, β-styryl-, phenylethynyl-, and ethylmagnesium bromides. The axial groups thus introduced are not conjugated with the subporphyrin core. This situation leads to effective fluorescence quenching of subporphyrins when the axial group is strongly electron donating such as 4-dimethylaminophenyl and ferrocenyl groups.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
authors.forename: Shun
authors.initials: S
authors.lastname: Saga
authors.forename: Shin-ya
authors.initials: SY
authors.lastname: Hayashi
authors.forename: Kouta
authors.initials: K
authors.lastname: Yoshida
authors.forename: Eiji
authors.initials: E
authors.lastname: Tsurumaki
authors.forename: Pyosang
authors.initials: P
authors.lastname: Kim
authors.forename: Young Mo
authors.initials: YM
authors.lastname: Sung
authors.forename: Jooyoung
authors.initials: J
authors.lastname: Sung
authors.forename: Takayuki
authors.initials: T
authors.lastname: Tanaka
authors.forename: Dongho
authors.initials: D
authors.lastname: Kim
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Osuka
keywords: Grignard reaction; boron-carbon bond; electron transfer; porphyrinoids; subporphyrins