A Rapid <sup>1</sup>H NMR Assay for Enantiomeric Excess of α-Substituted Aldehydes
作者:Yonggui Chi、Timothy J. Peelen、Samuel H. Gellman
DOI:10.1021/ol051174u
日期:2005.8.1
[GRAPHICS]In situ derivatization of a variety of alpha-substituted aldehydes via reaction with chiral amines allows convenient and efficient determination of enantiomeric excess. H-1 NMR analysis of the imine diastereomer ratio can be conducted immediately after the aldehyde and amine have been mixed. The results correlate well with ee values determined by more traditional (and slower) methods. This approach may be broadly applicable to alpha-substituted aldehydes.