Abstract
Asymmetrical cis-5,6-dimethyl-6-oxyacetoxy-(2,3)(9,10)-dibenzo-16-crown-5 was synthesized by a multi-step sequence and its stereochemistry determined by NOE experiments. Introduction of the 6-methyl group markedly reduces the stability constant for complexation of Na+ and K+ by the ionized form of the lariat ether carboxylic acid.
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Kim, J.S., Bartsch, R.A. & Ramesh, V. Synthesis and Conformational Studies of an Asymmetrical Dibenzo-16-crown-5 Carboxylic Acid. Journal of Inclusion Phenomena 36, 287–299 (2000). https://doi.org/10.1023/A:1008078220916
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DOI: https://doi.org/10.1023/A:1008078220916