Binuclear NMR Shift Reagents. An Apparent Anomalous Effect with Vinclozolin
作者:
Alexander Hatzis,
Robert Rothchild,
期刊:
Spectroscopy Letters
(Taylor Available online 1986)
卷期:
Volume 19,
issue 6
页码: 617-626
ISSN:0038-7010
年代: 1986
DOI:10.1080/00387018608069267
出版商: Taylor & Francis Group
关键词: Lanthanide;Silver;NMR;Shift Reagents;Optical purity;Enantiomers;Chiral
数据来源: Taylor
摘要:
The 60 MHz1H NMR spectra of racemic vinclozolin,1, have been studied at 28° in CDC13solution with the chiral reagent tris[3-(heptafluoropropylhydroxymethylene)-d-camphorato]europium(III),2, by incremental additions of (6,6,7,7,8,8,8-heptafluoro-2,2-di-methyl-3,5-octanedionato)silver(I),3.Although the solution of1with2displayed substantial downfield lanthanide-induced shifts, Δδ, and enantiomeric shift differences, ΔΔδ, for selected nuclei, relative to the spectrum of unshifted1, additions of3to the solution of1and2were unexpectedly found to dramatically reduce the magnitudes of both Δδ and ΔΔδ.
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