title: Synthesis of oxygen-substituted hexa-peri-hexabenzocoronenes through Ir-catalyzed direct borylation.
abstract: Direct C-H borylation of hexa-peri-hexabenzocoronenes (HBCs) has been achieved under iridium catalysis, which allows efficient synthesis of hydroxy-substituted HBCs by oxidation of the boryl groups. Further oxidation of dihydroxy HBC with phenyliodine bis(trifluoroacetate) (PIFA) afforded tetraoxo-substituted HBC without any regioisomers, which can be considered as a π-extended quinone.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya 464-8603, Japan.
authors.forename: Ryuichi
authors.initials: R
authors.lastname: Yamaguchi
authors.forename: Satoru
authors.initials: S
authors.lastname: Hiroto
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Shinokubo