|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Group 4 Metallocenes Bearing eta(5)-2-(N-Azolyl)indenyl Ligands: Synthesis, Structure Characterization, and Olefin Polymerization Catalysisстатья
Статья опубликована в высокорейтинговом журнале
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: Lebedev Artem Y., Izmer Vyatcheslav V., Asachenko Andrey F., Tzarev Alexey A., Uborsky Dmitry V., Homutova Yuliya A., Shperber Elizar R., Canich Jo Ann M., Voskoboynikov Alexander Z.
- Журнал: Organometallics
- Том: 28
- Номер: 6
- Год издания: 2009
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 1800
- Последняя страница: 1816
- DOI: 10.1021/om8010257
- Аннотация: The Pd-catalyzed cross-coupling reactions of readily available 2-bromo-1H-indene with 1H-pyrrole, 1H-indole, 9H-carbazole, and their derivatives were shown to be convenient methods to obtain novel ligands containing azole fragments bonded with cyclopentadienyl via nitrogen. An alternative protocol using enol triflates of 1-indanone or 2-indanone is also useful, particularly for synthesizing indenes bearing the N-azolyl fragment in position 1. On the other hand, the synthesis of 2-(1H-benzimidazol-1-yl)-1H-indene can be achieved via the Cu-catalyzed reactions only. The substituted indenes with the N-azolyl fragment in position 2 were further used for obtaining several semisandwich complexes of zirconium, [eta(5)-2-(N-azolyl)indenyl]zirconium tribromides, as well as symmetrical and unsymmetrical Waymouth-type zirconium and hafnium complexes containing indenyl ligands bearing planar N-azolyl or aryl fragments in position 2. These metallocenes were unambiguously characterized, including by X-ray crystal structure analysis, and a study of the fluxional behavior of several Waymouth-type complexes in solution was carried out by NMR spectroscopy. Finally, novel Waymouth-type complexes, after being activated by MAO, were found to form active catalysts of ethylene homopolymerization and ethylene/1-octene copolymerization.
- Добавил в систему: Измер Вячеслав Валерьевич