# What mechanism is this? [closed]

I was solving problems in Organic Chemistry related to Substitution and Elimination. This was a question asked in JEE 2019

This was the solution for above.

At last of solution, It has been mentioned that after rearrangement it undergoes"ArSE2 Pathway".

What is meant by ArSE2 pathway/mechanism?

• Electrophilic aromatic substitution is denoted as $\ce{S_{E}Ar}$. – Nilay Ghosh Aug 31 '20 at 5:03