
TY  - JOUR
A1  - Duewell, H 
T1  - 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
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1981
VL  - 34
IS  - 3
SP  - 539
EP  - 545
KW  - 
UR  - https://doi.org/10.1071/CH9810539 
N2  - 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. 
ER  -

