Abstract
Certain commercial carboxylic acids appear to be powerful chiral solvating agents, which allow for a rapid determination of enantiomeric purity and, subject to some limitations, the absolute configuration of common classes of phosphine oxides by means of 1H and/or 31P NMR spectroscopy. The complementary application of CD spectroscopic measurement enables the determination of their absolute configuration. Herein, we report a convenient, inexpensive, and straightforward approach to the complete determination of the enantiomeric ratio of mono-phosphine oxides and bis-phosphine dioxides.
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