Synthesis of extended triphenylenes by palladium-catalyzed [2+2+2] cycloaddition of triphenylynes |
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| Authors: | Romero Carmen Peña Diego Pérez Dolores Guitián Enrique |
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| Affiliation: | Departamento de Química Orgánica, Facultad de Química, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain. |
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| 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. |
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| Keywords: | arynes catalysis cyclotrimerization palladium triphenylenes |
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