Chapter 8.SE, Problem 45AP

Interpretation Introduction

Interpretation:

Which reaction is expected to be faster, addition of HBr to cyclohexene or to 1-methylcyclohexene is to be stated.

Concept introduction:

The addition of hydrogen halides to alkenes takes place through the formation of a more stable carbocation intermediate by the attack of the π electrons of the double bond on the positively polarized hydrogen of the hydrogen halide. The halogen is eliminated as a halide ion. In the second step, the halide ion reacts with the carbocation to yield the product.

To state:

Among the two reactions, the addition of HBr to cyclohexene and addition of HBr to 1-merhylcyclohexene which is faster.