Tetrahedron Asymmetry p. 2039 - 2044 (1995)
Update date:2022-08-04
Topics:
Devitt, Paul G.
Mitchell, Michael C.
Weetman, John M.
Taylor, Roger J.
Kee, Terence P.
A rapid, convenient and efficient in situ assay of enantiomeric excess in α-hydroxyphosphonate esters is reported exploiting 31P<1H> NMR analysis of the diastereoisomers formed upon condensation with a phosphorochloridite reagent containing a chiral diazaphospholidine ring.Use of this chiral framework affords chemical shift dispersions > 5 ppm between diastereoisomers, Accurate integrations are thus possible once account is taken of differential n.O.e. effects and spin lattice T1 relaxation times of the phosphorus nuclei.
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Doi:10.1007/BF00696931
(1995)Doi:10.1016/0040-4039(95)02221-X
(1996)Doi:10.1016/0022-1139(95)03252-9
(1995)Doi:10.1021/om00011a053
(1995)Doi:10.1021/jm950835y
(1996)Doi:10.1002/hlca.19970800202
(1997)
