Molecular Recognition of Alkylammonium, N-Methylpyridinium Cations and Native L-α-Amino Acids by Water Soluble Penta- and Tetra-Sulfonatocalixarenes

Author(s): Carmela Bonaccorso, Salvatore Gentile, Fabio Giuseppe Gulino, Domenico Sciotto.

Journal Name: Letters in Organic Chemistry

Volume 6 , Issue 8 , 2009

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Abstract:

The inclusion of ethylammonium, N-methylpyridinium cations and native L-α-amino acids by the watersoluble pentasulfonatocalix[5]arene 1 has been investigated at neutral pH by 1H NMR. The complexation behavior has been compared with that of the homologous tetrasulfonatocalix[4]arene 2. Unlike host 2, host 1 exhibits high selectivity in the recognition of the investigated guests.

Keywords: Calixarenes, water-soluble, molecular recognition, H NMR titration

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Article Details

VOLUME: 6
ISSUE: 8
Year: 2009
Page: [598 - 603]
Pages: 6
DOI: 10.2174/157017809790442880
Price: $58