| DOI | Trouver le DOI : https://doi.org/10.1039/P29830000555 |
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| Auteur | Rechercher : Chatgilialoglu, C.1; Rechercher : Woynar, H.1; Rechercher : Ingold, K. U.1; Rechercher : Davies, A.G. |
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| Affiliation | - Conseil national de recherches Canada
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| Format | Texte, Article |
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| Résumé | The radicals formed during photolysis of di-t-butyl peroxide and a number of alkenyldimethylsilanes have been examined by e.s.r. spectroscopy. Only carbon-centred radicals were observed. These were either secondary alkyl radicals formed by the addition of the initially formed silyl radical to a double bond and/or allyl radicals formed by hydrogen-atom abstraction from the alkenyl group. In most cases addition to the double bond was an intermolecular process. However, pent-4-enylsilyl radicals undergo intramolecular addition with endo-cyclization to form the six-membered ring being strongly favoured over exocyclization to form the five-membered ring. This preference was confirmed by product studies on 3,3-dimethylpent-4-enyldimethylsilane. The factors that control homolytic exo:endo cyclization rates for species in which the radical centre is located on a second row element are adumbrated. |
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| Date de publication | 1983 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21276714 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 81ce4030-5d0c-488c-8569-233cc751827f |
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| Enregistrement créé | 2015-10-13 |
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| Enregistrement modifié | 2020-03-13 |
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