The reactions of secondary alicyclic amines with the title substrates are subjected to a kinetic study in aqueous solution, 25.0° C, ionic strength 0.2 (KCl), by following spectrophotometrically the release of 4-nitrophenoxide ion. Under amine excess, pseudo- first-order rate coefficients (k obsd) are found. For the reactions of phenyl 4-nitrophenyl thionocarbonate (1), linear plots of k obsd vs [NH](NH is the free amine) are obtained, ...
