1.

Which of the following substituents deactivates the benzene ring towards electrophilic substitution?A. `-NHCH_(3)`B. `-OH`C. `-OCH_(3)`D. `-COOCH_(3)`

Answer» Correct Answer - D
The groups `-overset(..)(N)HCH_(3)` and `-underset(..)overset(..)(O)H` are strongly activating group `-overset(..)underset(..)(O)CH_(3)` is moderately activating but group `-overset(O)overset(||)(C)-OCH_(3)` is moderately deactivating due to its `-I_("effect")` as well as `-R_("effect")`


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