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New heterobimetallic Cu(I)-Pd(II)-containing polymer complexes: Electrochemical synthesis and application in 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: Magdesieva Tatiana V., Nikitin Oleg M., Yakimansky Alexander V., Goikhman Mikhail Ya, Podeshvo Irina V.
- Журнал: Electrochimica Acta
- Том: 56
- Номер: 10
- Год издания: 2011
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 3666
- Последняя страница: 3672
- DOI: 10.1016/j.electacta.2010.10.075
- Аннотация: Electrochemical approach to a new electroactive heteropolynuclear catalytic system based on polyamic acids with biquinolyl (biQ) fragments in the polymer backbone capable of coordination to Pd-II and Cu-I-ions was developed using sacrificial Pd and Cu anodes. The order of anode dissolution (first Pd and then Cu) was shown to be important for the synthesis of the heteropolynuclear complex. The opposite order of dissolution resulted in the oxidation of the initially formed Cu-I ions to Cu-II. The redox properties of the obtained heteronuclear polymer complexes containing Cu-I and Pd-II coordination units were characterized by cyclic voltammetry. The catalytic properties of the resultant metal-polymer system were investigated and it showed high catalytic activity in the reaction of aryl halides with phenylacetylene (Sonogashira coupling) at a small Pd loadings (0.1 mol%) yielding 50-90% of arylphenylacetylene depending on the nature of the aryl halide. The proposed catalytic system also exhibits high catalytic activity in cascade cyclisations of 2-iodoaniline and 2-iodophenole in the presence of phenylacetylene yielding synthetically useful 2-phenylindole (90%) and 2-phenylbenzofuran (92%). (C) 2010 Elsevier Ltd. All rights reserved.
- Добавил в систему: Магдесиева Татьяна Владимировна