Harjit Singh, ; Kumar, Subodh ; Jain, Anupa ; Singh, Paramjit (1990) Synthetic ionophores. Part 4. Phase transfer-catalysed synthesis of pyridine-containing macrocycles and their ionophore character Journal of the Chemical Society, Perkin Transactions 1 (4). pp. 965-968. ISSN 0300-922X
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Official URL: http://www.rsc.org/Publishing/Journals/P1/article....
Related URL: http://dx.doi.org/10.1039/P19900000965
Abstract
Phase transfer-catalysed reactions of pyridine-2,6-dicarboxylic acid dichloride and 2,6-dichloropyridine with oligo(ethylene glycols) provide macrocycles in yields higher than those reported by high dilution or transesterification methods. Extraction and transport studies of some of these macrocycles towards picrates of Li+ Na+, K+, Tl+, Mg2+, Ca2+, and Ba2+ by using chloroform as the nonpolar layer showed that two examples, the pyridino crown ethers (3a) and (5b), transport barium and thallium picrates respectively with significant selectivity.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 14623 |
| Deposited On: | 12 Nov 2010 13:56 |
| Last Modified: | 02 Jun 2011 12:03 |
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