Article

Synthesis of lipophilic crown ethers with pendant carboxylic acid groups

Department of Chemistry, Texas Tech University, Lubbock, Texas 79409
Journal of Heterocyclic Chemistry (impact factor: 1.22). 03/2009; 23(2):465 - 471. DOI:10.1002/jhet.5570230231 pp.465 - 471

ABSTRACT Synthetic routes to thirteen highly lipophilic crown ether carboxylic acids are described. Seven contain 12–15-membered crown ether units with four ring oxygens and are designed for lithium ion complexation. Three others possess large ring 24-crown-8, 27-crown-9, and 30-crown-10 units. Six new hydroxymethyl crown ethers are prepared as synthetic intermediates.

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Keywords

large ring 24-crown-8
 
lithium ion complexation
 
new hydroxymethyl crown ethers
 
Synthetic routes
 

Bronislaw P. Czech