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The novel macrocyclic compounds 1–8 and acyclic compound 9 were designed and synthesized. 1 H NMR studies demonstrated that 1 and 2 were the best chiral solvating agents, and are effective for the determination of the enantiomeric excess of a wide range of α-chiral carboxylic acids. Large non-equivalent chemical shifts (up to 411.2Hz) can be achieved in the presence of 1 and 2. Quantitative...
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