Stefan L. Spassov, R. Stefanova
1979
Citations
0
Influential Citations
10
Citations
Journal
Journal of Molecular Structure
Abstract
Abstract The conformational distribution of PhCH 2 CH(CH 3 )COOR and CH 3 CH 2 CH(Ph)COOR (R = H, CH 3 ) has been studied by NMR spectroscopy. In the former case the conformer with the phenyl and carboxyl (or methoxycarbonyl) groups in the anti position relative to each other is favoured. For 2-phenylbutyric acid and its ester the forms with the methyl group gauche to phenyl or COOR are almost equally represented. The validity of the additive gauche -interaction scheme for prediction of conformational distribution in substituted ethanes is also discussed.