Collect. Czech. Chem. Commun. 1980, 45, 2108-2119

Substituent effects in hydrolysis of 3-carbamoyl-1,3-diphenyltriazenes

Oldřich Pytela, Miroslav Večeřa and Pavel Vetešník

Organic Chemistry Department, Institute of Chemical Technology, 532 10 Pardubice


Fifteen substituted derivatives of 3-(N-methylcarbamoyl)-1,3-diphenyltriazene and nine substituted derivatives of 3-(N-phenylcarbamoyl)-1,3-diphenyltriazene have been synthesized. With 22 derivatives kinetic measurements have been carried out in acid, neutral and alkaline regions, and the respective catalytic constants have been determined. From the kinetic results the Hammett reaction constants have been calculated and used for discussion of the reaction mechanism suggested earlier.