Journal of the Chemical Society. Perkin transactions II p. 1421 - 1426 (1983)
Update date:2022-08-16
Topics:
Katritzky, Alan R.
Ou, Yu Xiang
Ellison, Joan
Musumarra, Giuseppe
A conductimetric method is developed to obtain rates for the title reactions for which the spectrophotometric method fails.It gives equivalent results.NN'-Dimethylthiourea displaces heterocyclic leaving groups at rates similar to those for piperidine.Compared with α-hydrogen, α-methyl groups render pyridine a less effective leaving group, whereas α-ethoxycarbonyl groups show a large rate enhancement.
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(1929)
