MCQ
Which of the following is not electrophile
  • $C{H_3} - C{H_2} - \mathop O\limits^ \oplus  {H_2}$
  • B
    $C{H_3} - Br$
  • C
    $Br_2$
  • D
    $CH_3-CH=CH_2$

Answer

Correct option: A.
$C{H_3} - C{H_2} - \mathop O\limits^ \oplus  {H_2}$
a
The order of reactivity of the benzene rings toward the electrophilic substitution when it is substituted with a activating group increases as the substituents on the ring are groups that donate electrons. $- CH _3$ is an activating group which makes benzene more reactive towards electrophile while- $COOH$ is a deactivating group which makes it less reactive.

The order reactivity towards the eletrophilic substitution of the compounds Toluene($I$)$\,>\,$ benzene($II$) $\,>\,$ Benzoicacid($III$)

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