Nonplanar Tub-shaped Benzocyclooctatetraenes via Halogen-Radical Ring Opening of Dihydrobiphenylenes
A novel tandem Ru-catalyzed [2 + 2 +2] cycloaddition of arylenynes to dihydrobiphenylenes followed by halogen-radical ring opening has been developed for the construction of tub-shaped halogenated benzocyclooctatetraenes (bCOTs). Cross-couplings and Diels-Alder reactions of the brominated bCOTs allo...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universidad de Santiago de Compostela (USC) |
| Repositorio: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| Idioma: | inglés |
| OAI Identifier: | oai:minerva.usc.gal:10347/26643 |
| Acceso en línea: | http://hdl.handle.net/10347/26643 |
| Access Level: | acceso abierto |
| Sumario: | A novel tandem Ru-catalyzed [2 + 2 +2] cycloaddition of arylenynes to dihydrobiphenylenes followed by halogen-radical ring opening has been developed for the construction of tub-shaped halogenated benzocyclooctatetraenes (bCOTs). Cross-couplings and Diels-Alder reactions of the brominated bCOTs allow the formation of the corresponding eight-membered ring fused PAHs. The halogen-radical ring opening prob-ably occurs via a selective formation of a bis-allyl radical at the 1,3-cyclohexadiene moiety, halogenation at the bridgehead carbon and final electrocyclic ring opening. |
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