title: Synthesis of extended triphenylenes by palladium-catalyzed [2+2+2] cycloaddition of triphenylynes.
abstract: The synthesis of ortho-(trimethylsilyl)triphenylenyl triflates 7 is described. Fluoride-induced decomposition of these triflates leads to the generation of didehydrotriphenylenes (triphenylynes) 6. These arynes undergo [4+2] cycloadditions with dienes to afford the corresponding Diels-Alder adducts or palladium-catalyzed formal [2+2+2] cycloadditions to afford extended triphenylenes.
authors.affiliation: Departamento de Química Orgánica, Facultad de Química, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Romero
authors.forename: Diego
authors.initials: D
authors.lastname: Peña
authors.forename: Dolores
authors.initials: D
authors.lastname: Pérez
authors.forename: Enrique
authors.initials: E
authors.lastname: Guitián
mesh_terms: D002384:Catalysis; D006841:Hydrocarbons, Aromatic / Q000138:chemical synthesis*; D010165:Palladium / Q000737:chemistry*
chemical_list: D006841:Hydrocarbons, Aromatic; D010165:Palladium