The Preparation of Dimethyl α -Hydroxyphosphonates and the Chemical Shift Non-Equivalence of Their Diastereotopic Methyl Ester Groups
作者:Harry R. Hudson、Ramon O. Yusuf、Ray W. Matthews
DOI:10.1080/10426500701690905
日期:2008.6.9
alkanals, aryl aldehydes (or aryl methyl ketones), furfuraldehyde, and 2- or 3-thiophenecarboxaldehyde, respectively, thus confirming the general utility of this synthetic procedure. The 1H and 13C nmr spectra of the products exhibit characteristic chemical shift non-equivalence of the diastereotopic methyl ester groups, for which a tentative order of non-equivalence is reported and discussed.
通过亚磷酸二甲酯与相应的烷醛、芳基醛(或芳基甲基酮)、糠醛和 2- 或 3- 噻吩甲醛,分别,从而证实了这种合成程序的通用性。产物的 1H 和 13C nmr 光谱表现出非对映甲基酯基团的特征化学位移非等价性,对此报告和讨论了非等价性的暂定顺序。