ISSN:
0749-1581
Keywords:
13C, 1H, 31P NMP spectra
;
Chiral P-substituted 1,3,2-dioxaphosphorinanes
;
Spin simulation of AXX systems
;
Substantial temperature-dependent
;
six-bond 6J (PP) coupling
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
13C, 1H and 31P NMR investigations were carried out to confirm the stereochemistry of novel bis[(4R,6R)-4,6-dimethyl-1,3,2-dioxaphosphorinan-2-yloxy]alkanes. The 13C NMR spectra exhibited second-order features at room temperature. Substantial coupling was found between P atoms six bonds apart. The possibility of a through-space contribution was tested. Spatially close P atoms and the strongly electronegative P substituents (oxygen atoms) are thought to be responsible for the enhanced P… P coupling.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260250905
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