Abstract. We have synthesized and tested a new binolaldehyde compound 1, against five diamine compounds. Using 1 H NMR (400 MHz) spectroscopy, stable diasteriomeric imine complexes between 1 and five diamines were formed. Chemical shift nonequivalences (up to 0.058 ppm) were obtained for imines. Linear calibration plot was obtained for determining the enantiopurity of diamines.
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