作者:Daniel J. Weix、Spencer D. Dreher、Thomas J. Katz
DOI:10.1021/ja001904n
日期:2000.10.1
chirality is far from a functional group, the stereochemistries of chiral molecules can be sensed if the functional group is attached to a phosphorus embedded within the groove of a nonracemic helicene. The sensor used was a phosphite ester of [5]HELOL, structure 6, and 31P NMR spectroscopy was the method of analysis. Although there are seven methylenes between the hydroxyl and the first center of chirality
即使当第一个手性中心远离官能团时,如果官能团连接到嵌入非外消旋螺旋凹槽内的磷上,也可以感知手性分子的立体化学。使用的传感器是 [5] HELOL 的亚磷酸酯,结构 6,31P NMR 光谱是分析方法。尽管羟基和第一个手性中心之间有七个亚甲基,但 31P NMR 可以区分具有基线分辨率的 8-苯基壬醇的对映异构体。然而,为了达到这个分辨率,必须适当地选择溶剂。该探针还可以分析其他醇类、胺类、酚类的对映异构体,当它们与 2-氨基苯酚偶联时,还可以分析羧酸。