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Markovnikov addition takes place with un...

Markovnikov addition takes place with unsymmetrical alkenes. The positive part of the reagent gets connected to the double bonded carbon with more number of hydrogens. In presence of peroxide and in special cases addition takes place against Markovnikov rule.
In which of the following compound addition takes place against Markovnikov rule

A

`CF_2 = CF_2`

B

`C Cl_3 - CH = CH_2`

C

`CH_3-underset(Cl)underset(|)C=CH_2`

D

Text Solution

Verified by Experts

The correct Answer is:
B
`C Cl_3` is a strong with drawing group. So `pi` bond polarise in its direction and addition takes palce against Markovniko rule
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Knowledge Check

  • Markovnikov addition takes place with unsymmetrical alkenes. The positive part of the reagent gets connected to the double bonded carbon with more number of hydrogens. In presence of peroxide and in special cases addition takes place against Markovnikov rule. 1-methyl cyclohenene on hydroboroation it will give

    A
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    D
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    HCl & HI dissociate into `H^(+)` and `X^(-)` only.
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