2007年6月
Synthesis of crownophanes possessing three pyridine rings
TETRAHEDRON
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- 巻
- 63
- 号
- 23
- 開始ページ
- 5088
- 終了ページ
- 5094
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/j.tet.2007.03.099
- 出版者・発行元
- PERGAMON-ELSEVIER SCIENCE LTD
Novel crownophanes with three pyridine moieties (pyridinocrownophanes 4 and 5) were prepared by means of intramolecular [2+2] photocycloaddition of vinylpyridine derivatives. In the liquid-liquid extraction of heavy metal cations, 4 and 5 exhibited high efficiency toward Ag+. Comparing the high extractability and complexing stability constant for Ag+ to those of the corresponding pyridinocrownophanes 2 and 3 and observing the H-1 NMR spectra in the presence of Ag+. the ethereal oxygen atoms and the three nitrogen atoms were found efficiently and cooperatively to act as ligating sites. (c) 2007 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.tet.2007.03.099
- ISSN : 0040-4020
- CiNii Articles ID : 80018546104
- Web of Science ID : WOS:000248238600031