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New Functionalized Diaza-crown Ethers

✍ Scribed by E. Sonveaux

Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
86 KB
Volume
91
Category
Article
ISSN
0037-9646

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πŸ“œ SIMILAR VOLUMES

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Reactions of 3,6,9,12-tetraoxa-7-(benzyloxymethyl)-l,l4-tetradecanediol with appropr ate ditosylates followed by hydrogenolysis produce hydroxymethyl-27-crown-9 and hydroxymethyl-30-crown-10. Alkali metal cation complexation by lipophilic dodecyl ether derivatives of these crowns is examined.

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The variable-temperature 'H and 13C NMR spectra of some N-tosyl diaza crown ethers have been obtained. They are discussed with respect to the preferred conformers of the crowns and the free energies of activation of the interconversional process of the large ring. Both the preferred conformers and t