ABSTRACT
The behavior of NH-and N-vinylpyrroles in the reactions with electrophiles is defined by the competition of several nucleophilic centers, namely, α-and β-positions of the pyrrole ring, nitrogen atom, and, in the case of N-vinylpyrrole, β-carbon atom of the vinyl group. In this line, the issues of peculiarities of pyrroles and N-vinylpyrroles behavior in acidic media, possibilities and routes of pyrrolium and N-pyrrolium ions generation, degrees of their stability, chemical properties, electronic and conformational structure, and synthetic potential represent urgent challenge.
