Collect. Czech. Chem. Commun. 1981, 46, 1376-1382

Reaction of 1,3-diphenyltriazene with phenyl isocyanate. Solvent effect, activation parameters and kinetic isotopic effect

Erhard Lejdar, Oldřich Pytela, Miroslav Večeřa and Pavel Vetešník

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


Effect of 14 solvents has been studied on the reaction of phenyl isocyanate with 1,3-diphenyltriazene. For ten of these solvents temperature dependence of the reaction velocity has been determined and the respective activation parameters calculated. Hydrogen atom of the triazene imino group has been replaced by deuterium, and the deuterium kinetic isotopic effect has been studied in seven solvents. The results confirm the mechanism suggested in a previous communication.