科研之友
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摘要
We have prepared a novel chiral macrocyclic compound 3 from a C-2-symmetric aminonaphthol in a high yield. Enantiomeric acids have large nonequivalent chemical shifts (up to 0.80 ppm) in the presence of 3 in H-1 NMR (500 MHz) spectra. Quantitative analyses of a series of mandelic acids with different enantiomeric purities show that host 3 is an excellent chemical shift reagent for chiral carboxylic acids.
- 出版日期2007-1-4
- 单位北京师范大学
