75507-17-4Relevant articles and documents
LIPOPHILIC BIS(CROWN ETHER) DERIVATIVES OF 15-CROWN-5 AND 18-CROWN-6 AS NEUTRAL CARRIERS OF ION-SELECTIVE ELECTRODES
Kimura, Keiichi,Ishikawa, Atsuo,Tamura, Hiroshi,Shono, Toshiyuki
, p. 447 - 450 (1984)
Lipophilic bis(crown ethers) containing 15-crown-5 and 18-crown-6 rings were synthesized so as to obtain excellent neutral carriers for K+- and Cs+-selective electrodes, respectively.The K+-selective electrode based on the dodecylmethylmalonate of bis(15-crown-5), (I) (n = 1, R = Me), exhibited eminent electrode properties, proving of great practical use, while the Cs+-selective electrode of the bis(18-crown-6) derivative (I) (n = 2, R = Me) did not give results as good as expected.The electrochemical selectivities of the K+ electrode based on the dodecylmalonate of bis(15-crown-5), (I) (n = 1, R = H), and octadecanoyloxymethyl-15-crown-5 (II) are also discussed.
Synthesis of lipophilic lariat ethers with pendant N-(X)sulfonyl carboxamide groups
Hu, Hui,Bartsch, Richard A.
, p. 557 - 562 (2007/10/03)
Synthetic routes to sixteen lipophilic lariat ether N-(X)sulfonyl carboxamides with X = trifluoromethyl, methyl, phenyl, and p-nitrophenyl are described. For this new family of proton-ionizable lariat ethers in which the acidity can be 'tuned' by X group variation, the ring size is systematically varied from 12-crown-4 to 14-crown-4 to 15-crown-5 to 18-crown-6.
Liquid-Liquid-Extraction of Metal Ions with Lariat Ethers
Gloe, K.,Muehl, P.,Beger, J.,Poeschmann, C.,Petrich, M.,Beyer, L.
, p. 413 - 421 (2007/10/02)
Lariat ethers of various ring size and substitution are synthesized and characterized by physical data and chemical analysis.The extraction behaviour of the crown compounds towards Na+, K+, Cs+ and Ag+ in a picric acid solution has been investigated.The extraction constants for 1:1 and 1:2 complexes are determined using the equilibrium distribution data.The results show that the flexible side chain in the investigated compounds has in no case a positive effect on the metal picrate extraction.
7-Benzyloxymethyl-3,6,9,12-tetraoxa-1,14-tetradecanediol: A versatile intermediate in crown and azacrown synthesis
Son,Czech,Bartsch
, p. 776 - 778 (2007/10/02)
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