
TY  - JOUR
A1  - Rae, ID 
T1  - Spin-spin coupling in the system H-C-N-H. I. Weakly basic secondary amines
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1966
VL  - 19
IS  - 3
SP  - 409
EP  - 414
KW  - 
UR  - https://doi.org/10.1071/CH9660409 
N2  - Proton-proton spin-spin coupling in the system H-C-N-H has been observed in a series of N-methylanilines. At 25º in deuterochloroform those bases with pKa >3.5 show no coupling owing to the rapidity of proton exchange in solution. In pyridine, however, this upper pKa limit is raised to 4.6. The temperature-dependence of the coupling behaviour, and hence the proton exchange rates, have been qualitatively explored. 
ER  -

