title: Unexpected cyclization of tritylamines promoted by copper salt through C-H and C-N bond cleavages to produce acridine derivatives.
abstract: Herein, we demonstrate that tritylamines undergo an unprecedented copper-mediated cyclization involving the cleavages of two C-H bonds and one C-N bond to give 9-arylacridine derivatives. This kind of acridines is of interest due to their biological properties and their unique optical and electro- and photochemical properties. Some of obtained acridine derivatives exhibit intense fluorescence in the solid state.
authors.affiliation: Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871 (Japan).
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Morioka
authors.forename: Koji
authors.initials: K
authors.lastname: Hirano
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Satoh
authors.forename: Masahiro
authors.initials: M
authors.lastname: Miura
keywords: CH activation; copper; cyclization; dehydrogenation; nitrogen heterocycles