Macrocyclic Ligands with Partially Fluorinated Sidearms: Synthesis and Metal Ion Complexation

Autor:	Sadik Elshani, Evgeny Kobzar, Richard A. Bartsch
Rok vydání:	2000
Předmět:	Chloroform Aqueous solution Organic Chemistry Extraction (chemistry) chemistry.chemical_element Alkali metal Biochemistry Nitrogen Metal chemistry.chemical_compound chemistry Silver Picrate visual_art Drug Discovery Polymer chemistry visual_art.visual_art_medium Methylene
Zdroj:	Tetrahedron. 56:3291-3301
ISSN:	0040-4020
DOI:	10.1016/s0040-4020(00)00248-9
Popis:	Derivatives of aza-12-crown-4, aza-15-crown-5, aza-18-crown-6, 1,10-diaza-18-crown-6 and 1,4,8,12-tetraazacyclopentadecane with partially fluorinated substituents attached to nitrogen are prepared. Their efficiencies and selectivities in alkali metal and silver picrate extractions from aqueous solutions into chloroform are determined and compared with those of appropriate model compounds. Ionophores with longer spacers of –CH 2 OCH 2 CH 2 – and –CH 2 CH 2 OCH 2 CH 2 – between the nitrogen atom(s) of the macroring and the perfluoroalkyl group(s) exhibit greater extraction efficiencies than do analogues with shorter spacers consisting of one or two methylene groups.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e98dfb10d01a69cd02a8ebfadd6ee26c https://doi.org/10.1016/s0040-4020(00)00248-9 Zobrazit plný text záznamu Full Text from ScienceDirect