On the Use of O-Methylmandelic Acid for the Establishment of Absolute Configuration of .alpha.-Chiral Primary Amines
作者:Barry M. Trost、Richard C. Bunt、Shon R. Pulley
DOI:10.1021/jo00094a035
日期:1994.7
The absolute configuration of alpha-chiral primary amines is correlated to the relative H-1 NMR shifts (upfield or downfield) observed in the diastereomeric amides formed from (S)-O-methylmandelic acid. The amides are easily formed without racemization from either the amine or the amine salt. A model is described that explains the observed shifts and can be used to determine the absolute configuration of unknown alpha-chiral primary amines.