Question

What is the major product obtained from the addition of hbr to the following compound.

Short answer

Because of formation of carbocation the product formed from the reaction of HBr to prop-2-enyl benzene is:

Step-by-step solution

What is carbocation?

A carbocation is a ion with positive charge on a carbon atom. The order of stability of carbocation is :

Tertiary > Secondary > Primary

Explanation

The rule which state that the electrophile adds to the sp2 carbon which has more number of hydrogen cannot be applied to reactions that forms carbocation that can be stabilized by electron delocalisation.

So the product formed from the reaction of prop-2-enyI benzene with HBr is