The correct order of following compounds for increasing reactivity towards electrophilic substitution is:
A
IV< II < I < III
B
III < II < I < IV
C
I < IV < III < II
D
II < III < I < IV
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Solution
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Correct option is A)
Here −OCH3 and −CH3 are activating groups, that are promoting electrophilic substitution reactions. CF3 is a deactivating group, which has the opposite effect. Hence, the order of increasing reactivity towards electrophilic substitution reaction is:
IV<II<I<III
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