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Paramagnetic induced shifts in the NMR spectra of flavone compounds by Eu(FOD)3

โœ Scribed by M. Okigawa; N. Kawano; W. Rahman; M.M. Dhar


Publisher
Elsevier Science
Year
1972
Tongue
French
Weight
186 KB
Volume
13
Category
Article
ISSN
0040-4039

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๐Ÿ“œ SIMILAR VOLUMES


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By means of electron impact mass spectrometry, the occurrence of dimeric (or higher) associates of the lanthanide shift reagents Eu(fod)j and Yb(fod)3 has been demonstrated. Also, the occurrence of 1:l and I:2 adducts of Ln(fod)s with propylamine was shown.

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Recently the use of two new shift reagents, Eu(fod)3 and Pr(fod)3, have been reported by Rondeau and Sievers. \* The advantage of these as shift reagents is due to their relatively high solubility in nonalcholic solvents and to the fact that neither Eu(fod)3

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I J Tris(dipivalomethanato)e~opium(llI) has beem used as an NMR shift reagent to obtain simpli6ed spectra of tropine, of coordination was secondary amine > secondary alcohol > tertiary amine h ketone. . . .~ systems containing two different heteroatoms. The observed order tra of bifuictionai tropane

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An assignment of relative configurations has been achieved for the diastereomeric racernates(lR2R,lS2S) and (1R2S, 1S2R) of 3,3-dimethyl-l,2-diphenylbuta~-l-ol through the comparative analysis of the respective chemical shifts induced by Eu(fod), in the 'H and '"C NMR spectra, and the corresponding