Contribution of lipophylicity to the performance of crown ethers. Effect of bulk and shape of the lipophylic substituents

…, H Emura, S Yamamura, M Okahara

Index: Ikeda, Isao; Emura, Hiroshi; Yamamura, Shingo; Okahara, Mitsuo Journal of Organic Chemistry, 1982 , vol. 47, # 26 p. 5150 - 5153

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Citation Number: 26

Abstract

15-Crown-5 and 18-crown-6 ethers bearing substituents on the ether ring have been studied as catalysts for the Finkelstein reaction and as agents for solubilization of alkali metal picratee in* heptane. All of these substituted crown ethers form stable complexes with Na+ and K+. These with highly lipophilic substituents are much more effective than the parent unsubstituted crown ethers as catalysts and as solubilizing agents. Both types of activity ...