111169-15-4Relevant academic research and scientific papers
Influence of Conformation on Transmission of Electronic Effects of Substituents. Correlation of Infrared Carbonyl Stretching Frequencies of 4-Substituted α-Naphtyl Styryl Ketones
Rajasekaran, Kasi,Gnanasekaran, Chinnasamy
, p. 263 - 266 (2007/10/02)
The s-cis and s-trans carbonyl stretching frequencies of several 4-substituted α-naphtyl styryl ketones have been measured in carbon tetrachloride and chloroform.The carbonyl stretching frequencies correlate very well with ?+ constants.The low ρcis/ρtrans ratio obtained for the present system compared with benzylideneacetones and chalcones shows that for effective transmission of the electronic effects of the substituents, the styryl group and the carbonyl group must be coplanar.Comparison of tha attenuation factors, ?Y and ?R, for different α,β-unsaturated ketones also supports this idea.
