EXTRACTION OF CHIRAL AMMONIUM CATIONS AND TRANSPORT THROUGH SUPPORTEDLIQUID MEMBRANES MEDIATED BY 1,2,4-TRIAZOLE-CONTAINING PODANDS AND MACROCYCLES

Authors
MARTINEZDIAZ MV DEMENDOZA J TORRES T
Citation
Mv. Martinezdiaz et al., EXTRACTION OF CHIRAL AMMONIUM CATIONS AND TRANSPORT THROUGH SUPPORTEDLIQUID MEMBRANES MEDIATED BY 1,2,4-TRIAZOLE-CONTAINING PODANDS AND MACROCYCLES, Tetrahedron letters, 35(41), 1994, pp. 7669-7672
Citations number
15
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
35
Issue
41
Year of publication
1994
Pages
7669 - 7672
Database
ISI
SICI code
0040-4039(1994)35:41<7669:EOCACA>2.0.ZU;2-V
Abstract
Extraction of chiral primary alkylammonium salts was achieved in the p resence of 1,2,4-triazole-containing macrocycles and podands with mode rate enantioselectivities. Although preferential transport of (R)-1-na phthylethylammonium salts was always observed, significant differences in both rates and selectivities were found when bulk (CHCl3-CCl4 or s upported (microporous polypropylene film) membranes were employed. The preparation of new proton-ionizable chiral bistriazolo-18-crown-6 mac rocycles 3c,d is described.