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Calix[4]arenes Substituted on the Narrow Rim with Malononitrile and Cobalt Bis(dicarbollide) Anion
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SYSNO ASEP 0332511 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Calix[4]arenes Substituted on the Narrow Rim with Malononitrile and Cobalt Bis(dicarbollide) Anion Author(s) Zhao, J. (DE)
Bolte, M. (DE)
Dordea, C. (DE)
Grüner, Bohumír (UACH-T) RID, SAI, ORCID
Böhmer, V. (DE)Source Title Synthesis. - : Georg Thieme Verlag - ISSN 0039-7881
Roč. 41, č. 23 (2009), s. 4063-4067Number of pages 5 s. Language eng - English Country DE - Germany Keywords carboranes ; metallacarboranes ; dicarbollides Subject RIV CA - Inorganic Chemistry R&D Projects GA104/09/0668 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000272974400021 DOI 10.1055/s-0029-1217061;Art ID:T10709SS Annotation Nitrile groups are suitable precursors for amino functions to which various other groups can be attached. Thus, the reaction of the 1,3-bis(3-bromopropyl ether) or 1,3-bis(4-bromobutyl ether) of tert-butylcalix[4]arene with methylmalononitrile has been studied in order to attach four nitrile groups to the narrow rim. Bimacrocyclic dinitriles were formed in 70% yield with malononitrile, and tetranitriles in 85% yield with methylmalononitrile. Subsequent alkylation of the tetranitriles with cobalt dioxane-bis(dicarbollide) gave dianionic calix[4]arenes, isolated as the cesium salts in 68% and 89% yield. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2010
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