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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name. |
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STUDIA CHEMIA - Issue no. 4(II) / 2009 | |||||||
Article: |
SYNTHESIS OF ESTER DERIVATIVES OF CALIX[N]ARENE. Authors: ALINA SAPONAR, ELISABETH-JEANNE POPOVICI, RODICA GRECU , IOAN SILAGHI-DUMITRESCU, NICOLAE POPOVICI. |
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Abstract: The synthesis of p-tert-butyl calix[n]arene derivatives with two and four, as well as, four and six (ethoxycarbonyl)methoxy groups at the lower rim is reported. The selective alkylation of the parent calix[n]arenes is performed in organic solvents, with ethyl bromoacetate in the presence of potassium carbonate or sodium hydride as a base. UV-Vis, FTIR, 1H-NMR investigations confirmed the formation of the ester derivatives of calix[n]arene with variable number of ester groups at the narrow rim. Keywords: Calix[n]arene, selective O-alkylation, ethyl bromoacetate |
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