IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry

svj29

Whats going on...???

i'm explainin the whole thing agian

The answer is a)

looking at the question option c) and d) can be clearly ruled out.

WHAT HAPPENS: H-X bond dissaciates and H+ attacks.

Markowonikoff addition occurs and carbocation intermediate is formed

the carbocation formed will be stabilized by hyperconjugation and inductive effect of the Me group/s in c) and d)

now we are left with a) and b)

in option b) the Carbocation is not stabilized by any means...

but in a) the carbocation is stabilized by resonance of Cl, but not to forget the inductive effect of Cl, which is much more dominating/instability providing than the stability provided by resonance.

so the story is clear.

option a) carbocation but electron withdrawing effect(on the whole)

b) carbocation, with no effect on it...

AND MORE STABLE THE REACTION INTERMEDIATE, MORE IS THE RATE OF REACTION.

so the answer is clearly a)

hope its clear now :)

Ask & Discuss Questions with Community & Experts