Question

How do you write the synthesis for the ozonolysis of styrene catalyzed by zinc, followed by acidification with potassium permanganate in strong acid, to yield two carboxylic acids?

Answer 1

This is written like this:

The ozonolysis forms an intermediate that is removed via a `"Zn"` reductive workup, and `"KMnO"_4` oxidizes the result (formaldehyde becomes formic acid). The `pi` bonds in the ring aren't affected.