| DOI | Trouver le DOI : https://doi.org/10.1021/jo00392a003 |
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| Auteur | Rechercher : Lusztyk, J.1; Rechercher : Maillard, B.1; Rechercher : Deycard, S.1; Rechercher : Lindsay, D.A.1; Rechercher : Ingold, K. U.1 |
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| Affiliation | - Conseil national de recherches Canada
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| Format | Texte, Article |
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| Résumé | Arrhenius parameters for the reaction of a secondary alkyl radical with tri-n-butylgermanium hydride have been measured by using the cyclization of 1-methyl-5-hexenyl radical as a "clock" reaction. At 298 K the rate constant is 1.8 × 10 4 M -1 s -1, which makes the secondary alkyl radical/n-Bu 3GeH reaction about 80 times slower than the corresponding reaction with tri-n-butyltin hydride. The secondary alkyl radical clock reaction has been rather precisely calibrated by using new data and data from the literature. An attempt to carry out similar experiments with 1,1-dimethyl-5-hexenyl yielded much less precise data for the cyclization of this tertiary alkyl radical. Reliable kinetic data for hydrogen abstraction from n-Bu 3GeH by tertiary alkyl radicals could not be obtained by using either the parent bromide or appropriate N-hydroxypyridine-2-thione esters as alkyl radical sources. |
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| Date de publication | 1987 |
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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 | 21276752 |
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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 | 830b1ef7-1c4b-415b-9ebe-f890b0b2b44b |
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| Enregistrement créé | 2015-10-13 |
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| Enregistrement modifié | 2020-03-17 |
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