Question

The following aromatic substitution reaction has been proposed to proceed via a radical chain reaction. The mechanism at the right has been proposed, where Ar is the aromatic ring. (a) Identify each step as either initiation, propagation, or termination. (b) Sum the propagation steps to verify that the net equation matches that given in the problem statement. (c) Propose a possible termination step.

Answer 1

a) Arlte→ ArT--→ initiation poractien b) Adding propotion equation orer alleg nation Tty pr blorn Statam ent c) fossibLc termination can terminatio, step i。从e a re where nadicel or anion forms bond s and become st abte H田)on generato d from adition at ortho position will heat -to fom HI rP +18,ー→ Hェ → termination step