Catalyzed M–C coupling reactions in the synthesis of σ-(pyridylethynyl)dicarbonylcyclopentadienyliron complexes

Verpekin, V.V.; Semeikin, O.V.; Vasiliev, A.D.; Kondrasenko, A.A.; Belousov, Y.A.; Ustynyuk, N.A.

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: 23 сентября 2020 г.

Авторы: Verpekin Victor V., Semeikin Oleg V., Vasiliev Alexander D., Kondrasenko Alexander A., Belousov Yuri A., Ustynyuk Nikolai A.
Журнал: RSC advances
Том: 10
Номер: 29
Год издания: 2020
Издательство: Royal Society of Chemistry
Местоположение издательства: United Kingdom
Первая страница: 17014
Последняя страница: 17025
DOI: 10.1039/d0ra02333g
Аннотация: The reactions between terminal ethynylpyridines, (trimethylsilyl)ethynylpyridines and cyclopentadienylirondicarbonyl iodide were studied under Pd/Cu-catalyzed conditions to develop a synthetic approach to the sigma-alkynyl iron complexes Cp(CO)2Fe–C^C–R(R = ortho-,meta-,para-pyridyl). Depending on the catalyst and reagents used, the yields of the desired sigma-pyridylethynyl complexes varied from 40 to 95%. In some cases the reactions with ortho-ethynylpyridine gave as byproduct the unexpected binuclear FePd mu-pyridylvinylidene complex [Cp(CO)Fe{m2-h1(Ca):h1(Ca)-k1(N)-Ca]Cb(H)(o-C5H4N)}(m-CO)PdI]. The conditions, catalysts, and reagents that provide the highest yields of the desireds-pyridylethynyl iron compounds were determined. The methods developed allowed the synthesis of the corresponding sigma-4-benzothiadiazolylethynyl complex Cp(CO)2Fe–C^C–(4-C6H3N2S) as well. Eventually, synthetic approaches to sigma-alkynyl iron complexes of the type Cp(CO)2Fe–C^C–R(R - ortho-,meta-,para-pyridyl, 4-benzothiadiazol-2,1,3-yl) based on the Pd/Cu-catalyzed cross-coupling reactions were elaborated.
Добавил в систему: Семейкин Олег Витальевич

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Catalyzed M–C coupling reactions in the synthesis of σ-(pyridylethynyl)dicarbonylcyclopentadienyliron complexesстатья

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