As. Masalimov et al., ESR ANALYSIS OF THE KINETIC ALKALINITY OF PSEUDOPHEDRINE, Bulletin of the Russian Academy of Sciences, Division of Chemical Sciences, 41(9), 1992, pp. 1559-1562
The kinetics of protonation of pseudoephedrine by 3,6-di-tert-butyl-2-
hydroxyphenoxyl have been analyzed by the ESR technique. It was shown
that protolysis of the radical produced closed ionic pairs with the ps
eudoephedrine cation in a dimer state.