The use of chiral shift reagents in an NMR study of 2,2′,6,6′-tetrasubstituted biphenyls
作者:E. Diaz、E. Rojas-Dávila、A. Guzmán、P. Joseph-Nathan
DOI:10.1002/mrc.1270140603
日期:1980.12
AbstractThe determination of the enantiomeric composition of 2,2′,6′6′‐tetrasubstituted biphenyls using 1H NMR spectroscopy, in combination with chiral lanthanide shift reagents, has been studied. In general, the S compounds give largeer induced shifts than the correspondind R isomers when d‐camphor derived shift reagents are used.