New challenges in Rh(I)-catalysed [2+2+2] cycloaddition reactions
This doctoral thesis studies the involvement of challenging unsaturated substrates in the transition-metal catalysed [2+2+2] cycloaddition reaction, as well as new catalytic systems for the reaction. First, Morita-Baylis-Hillman adducts are involved in the partial intramolecular rhodium(I)-catalysed...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/663661 |
| Acceso en línea: | http://hdl.handle.net/10803/663661 |
| Access Level: | acceso abierto |
| Palabra clave: | Rhodium Rodi Rodio Morita-Baylis-Hillman Chirality induction Inducció quiral Inducción quiral Cycloaddition reaction Reacció de cicloaddició Reacción de cicloaddición 547 |
| Sumario: | This doctoral thesis studies the involvement of challenging unsaturated substrates in the transition-metal catalysed [2+2+2] cycloaddition reaction, as well as new catalytic systems for the reaction. First, Morita-Baylis-Hillman adducts are involved in the partial intramolecular rhodium(I)-catalysed [2+2+2] cycloaddition reaction. Next, linear chiral allene-yne/ene-allene substrates are synthesized and submitted to [2+2+2] cycloaddition reaction conditions. The process works with effective chirality induction of the chiral centres of the linear compounds to the cycloadducts. Following, the synthesis of a dendrimer by means of a Co-catalysed [2+2+2] cycloaddition reaction to form the core is described. The dendrimer contains a poly(ethylene glycol) moiety, as well as a ligand that can coordinate to a metal. Finally, hybrid silica materials containing rhodium(I) complexes are prepared. These materials are used for the [2+2+2] cycloaddition of alkynes and can be recovered by simple filtration and reused in further reactions. |
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