1.

Which one of the following requires radicalintermediates?

Answer»

`CH_(3)-CH=CH_(2)+HBR to CH_(3)-underset(BR)underset(|)(CH)-CH_(3)`

`CH_(3)-CH=CH_(2)+HBr to CH_(3)-CH_(2)-CH_(2)-Br`
`CH_(3)CHO=NH_(2)OH overset(H^(+))to CH_(3)-CH=N-OH`

SOLUTION :

`-NH_(2)` group is electron releasing DUE to `+R` effect while `NO_(2)` group is electron withdrawin due to `-I and -R ` effects


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