Synthesis and complexing properties of double armed diaza-15-crown-5 and diaza-18-crown-6 ethers having 4 '-hydroxy-3 ',5 '-disubstituted benzyl groups

Citation
Y. Habata et al., Synthesis and complexing properties of double armed diaza-15-crown-5 and diaza-18-crown-6 ethers having 4 '-hydroxy-3 ',5 '-disubstituted benzyl groups, J HETERO CH, 38(3), 2001, pp. 585-590
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF HETEROCYCLIC CHEMISTRY
ISSN journal
0022-152X → ACNP
Volume
38
Issue
3
Year of publication
2001
Pages
585 - 590
Database
ISI
SICI code
0022-152X(200105/06)38:3<585:SACPOD>2.0.ZU;2-L
Abstract
A series of double armed diaza-15-crown-5 ethers (9a - 16a) and diaza-18-cr own-6 ethers (9b - 16b) have been prepared by the Mannich reaction of 2,4-d isubstituted phenols with the corresponding N,N'-dimethoxymethyldiaza-crown ethers in benzene. The crystal structures of the diaza-18-crown-6 ethers h aving iso-propyl (10b), tert-butyl (11b), and mixed methyl and tert-butyl g roups (12b) at positions 3' and 5' of the phenolic side arms were determine d using X-ray diffraction methods. Competitive transport by these ligands f or sodium, potassium and cesium cations were measured under basic-source ph ase and acidic-receiving phase conditions.