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本文报道以 Eu(fod)_3作位移试剂,在 CCl_4中用1~H NMR 准确地分析了2,2′-二羟基-1,1′-联萘(1)的(+)-MTPA 二酯的对映体含量。当位移试剂与样品的摩尔比(r/s)在0.35～0.60之间时,其对映体过量值的绝对误差小于1%。
In this paper, the (+) - MTPA diester of 2,2’-dihydroxy-1,1’-binaphthyl (1) was accurately analyzed by 1 H NMR in CCl 4 with Eu (fod) Enantiomer content. The absolute error of the enantiomeric excess is less than 1% when the molar ratio of displacement reagent to sample (r / s) is between 0.35 and 0.60.