Question

What is the other name for Anti Makovnikov rule?

Answer 1

Hint: The addition of hydro halides to the unsaturated alkenes is going to occur in two ways and they are Markovnikov rule and Anti Makovnikov rule. The addition of hydro halide to the alkenes is called an additional chemical reaction.

Complete answer:
- In the question it is asked to write the other name for the Markovnikov rule.
- First, we should know the Makovnikov rule before we are going to know the other name for the Anti Makovnikov rule.
- The Markovnikov rule is as follows.
- In Makovnikov rule, the hydrogen from the hydro halide is going to attach to the carbon where high substitution is present in the alkenes.
- Coming to Anti Makovnikov rule, the hydrogen from the hydro halide is going to attach to the carbon where less substitution is present in the alkenes.
- The chemical reaction which follows the Anti Markovnikov rule is as follows.
$$C{H}_{3}C{H}_{2}C{H}_{2}CH=C{H}_2+HBr\stackrel{peroxides}{\to }C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}C{H}_{2}Br$$
- In the above chemical reaction, we can see that the alkene in the presence of peroxides reacts with hydrogen bromide and forms a product in which the hydrogen is attached to less substituted carbon in the alkene.
- The above chemical clearly shows that the reaction is going to occur in the presence of peroxides therefore the Anti Markovnikov rule is also called peroxide effect.

Note:
In the presence of the peroxides free radical addition mechanism is going to occur toad the hydro halide to the alkene. The peroxides which are involved in the Anti Markovnikov rule are benzoyl peroxide, acetyl peroxide etc.