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Use of tris-(dipivalomethanato)europium as a shift reagent in the identification of 3-H-pyrano[3,2-f]quinolin-3-one

โœ Scribed by Kenneth J. Liska; Allison F. Fentiman Jr.; Rodger L. Foltz


Publisher
Elsevier Science
Year
1970
Tongue
French
Weight
174 KB
Volume
11
Category
Article
ISSN
0040-4039

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โœฆ Synopsis


We wish to report the synthesis and re-identification of 3-~-pytano[3,2-~qulnoline-3-one (I), and to correct the data on physical properties given for I by Dep and Gomamil. We also wish to describe the use of the recently reported2 &&-(dipivalomethanato)europiun, Eu(DPM)~, as a shift reagent in the NMR spectroscopic study of I.


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โœ Philip Reisberg; Ian A. Brenner; Jerome I. Bodin ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 398 KB

A simple, rapid, and quantitative NMR method was developed for the determination of the ratio of the diastereoisomers present in 7-chloro-3,3a-dihydro-2-methyl-2H, 9H-isoxazolo(3,2-b)(1,3)benzoxazin-9-one (I). Deuterated tris(1,1,1,2,2,3,3heptafluoro-7,7-dimethyl-4,6-octanedionato)europium I11 shift