# Prins reaction mechanism

I am trying to figure out the product for the following reaction:

Its a Prins Reaction. My proposed mechanism for it is:

In my second step, that particular carbocation is formed since $\ce{Ph}$ is an electron-withdrawing group.

Mechanism looks neat enough, but the reaction given in Wiley's Solomon and Fryhle (Page 379) is:

I'd like to know why my mechanism is "wrong"? I think there's problem in the carbocation generation step but isn't the carbocation that I have formed more stable?

• The carbocation will definitely form at the benzyl carbon. The fact that the benzene ring can stabilize the cation through resonance outweighs the disadvantages of negative inductive effect. – Pritt Balagopal Mar 30 '18 at 11:51

In my second step, that particular carbocation is formed since $\ce{Ph}$ is an electron-withdrawing group.
The electrophile will attack at $\alpha$ position rather than $\beta$