Novel promising benzoazacrown ethers as a result of ring transformation of benzocrown ethers: Synthesis, structure, and complexation with Ca2+статья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A series of promising benzoazacrown ethers with the nitrogen atom conjugated with the benzene ring were synthesized using a novel synthetic procedure based on stepwise transformation of the macroheterocycle. The structures and spectral proper-ties of the resulting benzoazacrown ethers and their complexes with Ca2+ were studied by X-ray diffraction and H-1, C-13, and N-15 NMR spectroscopy including the 2D NOESY technique. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.