| 1. |
A mechanism was proposed for aromatic nucleophilic substitution, which consists in attack of the nucleophile on the substituted bond, with electron transfer to the aromatic substrate and the formation of a pair of free radicals.
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| 2. |
The probability of the free radicals recombining to the  -complex decreases with increase in the activity of the nucleophile and the acceptor capacity of the aromatic substrate.
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| 3. |
The theory was expressed that the formation of free radicals is possible in the coordinated reactions that are forbidden because of the symmetry via one-electron transfer as the result of the convergence of the levels of the boundary orbitals of the reactants.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1160–1163, May, 1976.