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Competition between sp(3) and sp(2) C-H bonds in cyclopalladation of N-methyl-alpha-tert-butylbenzylamineстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Dunina V.V., Gorunova O.N., Averina E.B., Grishin Y.K., Kuz'mina L.G., Howard J.A.K
- Журнал: Journal of Organometallic Chemistry
- Том: 603
- Номер: 2
- Год издания: 2000
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 138
- Последняя страница: 151
- DOI: 10.1016/S0022-328X(00)00138-8
- Аннотация: Intramolecular palladation of the (sp(3))C-H bond of a tert-butyl group of N-methyl-alpha-tert-butylbenzylamine can be achieved in competition with (sp(2))C-H bond activation where both possible reactions are equally suitable for five-membered palladacycle formation. Activation of the (sp(3))C-H bond occurs with PdCl42- assisted by a secondary amino group as a heterodonor center in a benzylamine ligand; regioselective activation of the (sp(2))C-H bond was achieved with PdI42-. To compare, cyclopalladation of the related tertiary amine occurs regioselectively to give ortho-palladated complex as the sole product. The structure of both regioisomeric complexes was confirmed by an X-ray study of their triphenylphosphine adducts. The conformational features of the two five-membered palladacycles is discussed on the base of the H-1-NMR and X-ray data. (C) 2000 Elsevier Science S.A. All rights reserved.
- Добавил в систему: Гришин Юрий Константинович