how can we choose a reaction that has gone markoniff rule or anti-markonic rule as there would be change in the direction of the species to attack

Asked by Shravani Mamidala | 11th Jan, 2014, 07:19: PM

Expert Answer:

Markovnikov's Rule:
 
In case of Markovnikov's rule, the addition of halogen halides to alkenes is an electrophilic addition reaction.
 
 
 
 
 
Since a 20  carbocation(I) is more stable than 10 carbocation(II), therefore carbocation(I) is predominantly formed.
 Markovnikov's addition occurs through the more stable carbocation intermediate.
 
Peroxide effect :
 
Peroxide effect is observed only with HBr and not with HF,HCl, or HI
 

Answered by Vaibhav Chavan | 16th Jan, 2014, 10:26: AM

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