# Reimer-Tiemann reaction on indole

According to me net reaction should be at $$\ce{C3}$$ when Reimer-Tiemann reaction is done on indole (see image), since in the resonance structure, negative charge is on this carbon.

But, the answer given is on $$\ce{C2}$$, and the solution given is

In pyrolle, the most electrophilic site is $$\ce{C2}$$. Think in a similar way.

But, I can't either find fallacy in my reasoning, not do I convince with the solution.

TL;DR Where will dichlorocarbene attack on indole (am not interested in ring expansion).