Tetrahedron p. 10253 - 10264 (1994)
Update date:2022-07-29
Topics:
Hammerschmidt, Friedrich
Li, Yong-Fu
(R)-MTPA esters of α-hydroxyphosphonates 1a-h of known absolute configuration were prepared and their 31P NMR spectra were recorded.The chemical shifts of the 31P signals of the derivatized (S)-alcohols are consistently downfield relative to the signals of the corresponding (R)-alcohols.A variety of racemic and diastereomeric α-hydroxyphosphonates 1i-o and their (R)-MTPA esters were prepared.The 31P chemical shift differences are large enough to securely assign absolute configurations to α-hydroxyphosphonates.
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