(S)-2H-2-oxo-5,5-dimethyl-4(R)-phenyl-1,3,2-dioxaphosphorinane, a new reagent for the enantiomeric excess determination of unprotected amino acids using 31P NMR
作者:Ron Hulst、Robert W.J. Zijlstra、N.Koen de Vries、Ben L. Feringa
DOI:10.1016/0957-4166(94)80081-2
日期:1994.9
Diastereomeric amide derivatives of title phosphorinane 2 and unprotectedaminoacids are easily prepared in aqueous solutions, showing well separated signals in the 31P NMR spectra allowing accurate e.e. determination.
在水溶液中可以轻松制备标题膦烷2和非保护氨基酸的非对映异构酰胺衍生物,在31 P NMR光谱中显示出分离良好的信号,从而可以准确测定ee。
Stereochemical aspects in the insertion by alkylidenemethylene carbenoids into the .alpha.-carbon-hydrogen bond of alkoxides