Elecrophilic substitution of aromatic compounds by NH4+ under chemical ionization conditions
Abstract
Under chemical ionization conditions NH4+ protonates certain aromatic compounds PhR (R =–CN, –NH2, –NHMe, –CH2NH2, and –CO·NH2), and acts upon others as an electrophile, substituting –NO2, –Cl, –Br, –I, –CH2OH, –CO·H, –CO·Me, –CO·OH, and –CO·OMe with NH3+, presumably via a sigma complex.