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Novel 15-hydroxybenzomonothia-15-crown-5 containing the sulfur atom linked with the benzene ring and its S-oxide were synthesized. The stability constants for the complexes of the obtained benzocrown ethers and a reference 15-hydroxybenzo-15-crown-5 with Na, Ca, AgI, Cd, HgII, and PbII perchlorates were determined by 1H NMR titration. In MeCN-d3, the benzothiacrown ether demonstrates a high selectivity...
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