Stereospecific synthesis from carbohydrate precurors of (R)- and (S)-ethyl isopropyl methyl phosphate and other optically active neutral phosphorus esters
作者:C. Richard Hall、Thomas D. Inch、Gilbert J. Lewis、Rosemary A. Chittenden
DOI:10.1039/c39750000720
日期:——
Stereospecific syntheses starting from carbo-hydrate precursors of (+)-(R) and (–)-(S)-ethyl iso-propyl methyl phosphates, (+)-(R)-O-ethyl O,S-dimethyl phosphorothioate, and (+)-(R)-ethyl methyl methyl-phosphonate are described; the enantiomeric purity of these compounds was determined by an n.m.r. method involving the use of tris-[3-(heptafluoro-n-propylhydroxy-methylene)-(+)-camphorato]europium(III)
Stereochemical consequences of the use of chiral N-phosphoryl oxazolidinones in the attempted kinetic resolution of bromomagnesium alkoxides
作者:Simon Jones、Dimitrios Selitsianos
DOI:10.1016/j.tetasy.2005.08.025
日期:2005.9
A number of chiral N-phosphoryl oxazolidinones have been prepared and evaluated as asymmetric phosphoryl transfer agents with the magnesium alkoxide of 1-phenyl ethanol. The reaction proceeded with little stereo selection, which was shown to be a consequence of the reaction mechanism that occurs with inversion of configuration at phosphorus consistent with in-line attack opposite the leaving group. (C) 2005 Elsevier Ltd. All rights reserved.
Cooper,D.B. et al., Journal of the Chemical Society. Perkin transactions I, 1977, p. 1969 - 1980
作者:Cooper,D.B. et al.
DOI:——
日期:——
NAKAYAMA, KENSAKU;THOMPSON, W. J., J. AMER. CHEM. SOC., 112,(1990) N9, C. 6936-6942