
%0 Journal Article
%A Perez, G 
%A Possagno, E 
%A Lilla, E 
%T Influence of Protonation Exothermicity on Gas-Phase Concurrent Dealkylation and Isomerization of p-Cymene
%J Australian Journal of Chemistry
%D 1992/03/01
%V 45
%N 3
%P 623-626
%K 
%R https://doi.org/10.1071/CH9920623
%U https://www.publish.csiro.au/paper/CH9920623 
%X The gas-phase protonation is reported of p-cymene (p- isopropyltoluene ) by different radiolytically formed protonating agents (O2H+, N2H+, CH5+, COH+). The characteristics of the reactions vary with the protonation exothermicity . Both dealkylation and isomerization are observed with O2H+ or N2H+ ions. Only dealkylation occurs when the protonating agent is the CH5+ ion. Formation of products is not observed when the less energetic COH+ ions are employed. The results show that in the competition between isomerization and dealkylation the dealkylation reaction becomes favoured as the protonation exothermicity decreases. 
