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Long-range deuterium isotope effects on 13C NMR shifts of intramolecularly hydrogen-bonded 9-hydroxyphenalen-1-ones

✍ Scribed by Carin Engdahl; Adolf Gogoll; Ulf Edlund

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 780 KB
Volume: 29
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260290112

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✦ Synopsis

The 'H and "C NMR spectra of 9-bydroxyphenalenone (1) and 9-hydroxy-2-methylpbnalenone (2) have been completely assigned. Primary and secondary deuterium isotope effects were determined in three solvents (chloroform, acetone and dimethyl sulphoxide), including the effect of temperature on t b secondary isotope effects. Both negative and large long-range secondary isotope effects were found for both 1 and 2. The average secondary isotope effects for corresponding carbons follow the same sign and magnitude pattern in both compounds.

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