Abstract
Proton-ionizable dibenzo-14-crown-4, -16-crown-5, -19-crown-6 and -22-crown-7 lariat ethers with different lipophilic geminal alkyl groups and different proton-ionizable groups are synthesized. For each lariat ether platform, butyl, heptyl and decyl groups were incorporated as the geminal lipophilic groups. Carboxylic acid, N-(trifluoromethane)sulfonyl carboxamide and sodium 3-propanesulfonate groups are incorporated on the platforms as proton-ionizable functions.
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