
TY  - JOUR
A1  - Oconnor, CJ 
A1  - McLennan, DJ 
A1  - Calvert, DJ 
A1  - Mitha, ASH 
T1  - Substituent Effects on the N.M.R. Spectra of Carboxylic Acid Derivatives. IV. <sup>13</sup>C N.M.R. Spectra of <I>para</I>-Substituted Phenols, Phenylureas and Phenyl Propionates
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1987
VL  - 40
IS  - 4
SP  - 677
EP  - 686
KW  - 
UR  - https://doi.org/10.1071/CH9870677 
N2  - The 13C n.m.r. spectra of 9 para-substituted phenols, 12 para-substituted phenylureas and 11 para-substituted phenyl propionates have been measured in (CD3)2SO and the observed substituent chemical shifts have been found to be non-additive with respect to those of the corresponding monosubstituted benzenes. The 1H n.m.r. spectra of the phenols and phenyl propionates and the i.r . carbonyl stretching frequencies of the phenyl propionates have also been determined. The spectral data have been treated by single parameter and dual substituent parameter linear free energy relationships ( l.f.e.r .) and &#963;R values of best fit have been identified. In general, treatment by single parameter l.f.e.r . Are at least as satisfactory as those by DSP l.f.e.r. 
ER  -

