In the first, direct aromatic substitution by chlorine is suggested whereas the second mechanism, the “Orton Rearrangement” involves initial chlorination of the amide nitrogen followed by an attack on the aromatic ring.
In the first, direct aromatic substitution by chlorine is suggested whereas the second mechanism, the “Orton Rearrangement” involves initial chlorination of the amide nitrogen followed by anattack on the aromatic ring.