[en] Complete text of publication follows. The extensive use of N-P-tolylglycine (NPG) analogues in adhesive bonding technologies calls for a better understanding of their role in initiating free-radical polymerization. The fast oxidation and reductions of NTG proceed via the formation of various types of free radicals and radical cation and anion intermediates. These intermediates were identified and their reactivity with oxygen, to produce the corresponding peroxyl radicals, has been measured. Hydroxyl radicals (OH) were used to initiate oxidation reactions of NTG, while the reduction reactions were initiated with hydrated electrons (e_aq^-). In the presence and absence of oxygen, the oxidation reaction mechanism of NTG by OH proceeded predominately by addition to the aromatic ring followed by OH^- elimination reactions to produce NTG⁺ radical cations. In the presence of oxygen, OH-NTG also reacted with oxygen to produce peroxyl radicals. The reduction reaction of NTG with e_aq^- proceed via addition to the aromatic ring and amine-elimination, to produce various radicals: addition to the aromatic ring was followed by a fast protonation reaction to produce cyclohexadienyl radicals, and the amine-elimination reaction produced acetic acid free radicals and 4-methylaniline. In addition, it was found that the H-atom reaction with NTG also produced radical cations