The infrared 1H nuclear magnetic resonance, and ultraviolet spectra of some nuclear substituted styryl ketones
- 1 January 1968
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society B: Physical Organic
- p. 698-703
- https://doi.org/10.1039/j29680000698
Abstract
The synthesis and spectra of several substituted 1-phenylhept-1-en-3-ones are described. The olefinic double bond was shown from infrared and 1H n.m.r. spectroscopy to have the trans-configuration. Correlations have been found of the Hammett and Taft values of the substituents with both the infrared carbonyl frequencies and the τ-values of the olefinic protons. Ultraviolet spectroscopy suggests the loss of planarity of the conjugated system when some ortho-substituents are present.Keywords
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