The synthesis and coordination properties of new macrocyclic polyethers
The synthesis and coordination properties of new macrocyclic polyethers作者机构：Shanghai Institute of Organic Chemistry Academia Sinica
出 版 物：《Acta Chimica Sinica(English Edition)》 (化学学报(英文版))
年 卷 期：1984年第2卷第2期
页 面：144-153页
主 题：The synthesis and coordination properties of new macrocyclic polyethers
摘 要：A new type of macrocycc polyethers has been *** consists of an azacrownether as mother ring,e.g.1,7-dioxa-4,10-diaza-cyclododecane（1a）or 1,7,10,16-tetraoxa-4,13-diaza-cycloocatadecane（1b）,and two side chains attached on the two nitrogen atoms of 1a or 1b.A numberof these new crown ethers are obtained by alkylation of the two secondary amino groups of 1a or 1bwith corresponding halides,BrCH2（CH2OCH2）nCH2OR,in the presence of potassium *** crown-alkali metal complex thus obtained is hydrolyzed by *** order to obtain pure crownether the reaction mixture is treated with tetramethylammonium hydroxide and followed by *** ability of complexing alkali cations of macrocyclic polyethers in terms of the equilibriumconstant have been studied by the method of solubilities of salts in *** is shown that thesize of the mother ring,the number of oxygen atoms either in the ring or in the side-chains,and theionic radius of the alkali metal are the factors governing the stability of the metal *** these new crown ethers possess high ability for alkali metal complexation some of them,such asN,N’-di-β-methoxyethyl-1,7-dioxa-4,10-diaza-cyclododecane（13a）,possesses higher selectivity forNa+ and K+ ions than 18-crown-6-and 4,4’（5’）-dimethylbenz-30-crown-10.
同方期刊数据库