[Altered State]

In the top of the img is the reaction, and below is my attempt.



What am I missing here? How can that ketone be "eliminated" with those conditions?

[Doc Oc]

Is "pent-3-en-2-ona" a typo or is the rest of the word cut off?  That could make a huge difference

[mst]

That's easy, it doesn't 
There is a hydroxy group missing in the target molecule, the ketone is just enolizing to form an aromatic System.
That's a Standard hauser annulation if you want to look it up.

[Altered State]

Is "pent-3-en-2-ona" a typo or is the rest of the word cut off?  That could make a huge difference

Not a typo, it's pent-3-en-2-one in Spanish.

[Altered State]

That's easy, it doesn't 
There is a hydroxy group missing in the target molecule, the ketone is just enolizing to form an aromatic System.
That's a Standard hauser annulation if you want to look it up.

That's what I thought. Thanks.