
%0 Journal Article
%A Duewell, H 
%T High-field <sup>1</sup>H N.M.R. study of the four-spin system of a set of 2,3,4,5-tetrasubstituted pyrrolidines
%J Australian Journal of Chemistry
%D 1981/03/01
%V 34
%N 3
%P 539-545
%K 
%R https://doi.org/10.1071/CH9810539
%U https://www.publish.csiro.au/paper/CH9810539 
%X The pyrrolidine ring protons of the isomeric dimethyl 2,5-dibenzoyl-1-phenylpyrrolidine- 3,4-dicarboxylates constitute, depending on stereochemistry, either an [AX]2 or an ABXY system. The three types of spectra obtained have been analysed and correlated with molecular structure. Evidence is given for hydrogen bonding, between ester groups and cis-vicinal phenacyl hydrogen atoms, which leads to the stabilization of the preferred conformers. 
