Reversible Isomerization Between Silacyclopropyl Cation and Cyclic (Alkyl)(Amino)Silylene
A phosphine-stabilized silacyclopropyl cation 2 has been synthesized and fully characterized. Of particular interest, 2 reversibly isomerizes into the corresponding seven-membered cyclic (alkyl)(amino)silylene 3 at room temperature via a formal migratory ethylene insertion into the Si-P bond. Althou...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:285770 |
| Acceso en línea: | https://ddd.uab.cat/record/285770 https://dx.doi.org/urn:doi:10.1002/anie.202215394 |
| Access Level: | acceso abierto |
| Palabra clave: | Isomerization Silylenes Silylium Ions Small Rings Transition Metal Complexes |
| Sumario: | A phosphine-stabilized silacyclopropyl cation 2 has been synthesized and fully characterized. Of particular interest, 2 reversibly isomerizes into the corresponding seven-membered cyclic (alkyl)(amino)silylene 3 at room temperature via a formal migratory ethylene insertion into the Si-P bond. Although silylene 3 has not been spectroscopically detected, its transient formation has been evidenced by the isolation of the corresponding disilene dimer 5 as well as by trapping reactions. A phosphine-stabilized silacyclopropyl cation has been synthesized and fully characterized. Interestingly, this silacyclopropyl cation reversibly isomerizes into the corresponding seven-membered cyclic (alkyl)(amino)silylene at room temperature via a formal migratory ethylene insertion into the Si-P bond. Although the silylene has not been spectroscopically detected, its transient formation has been evidenced by various trapping reactions. |
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