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Some meta-directing substituents in arom...

Some meta-directing substituents in aromatic substitution are given which one is the most deactivating?

A

— COOH

B

`– NO_(2)`

C

` -C-=N`

D

`- SO_(3)H`

Text Solution

Verified by Experts

The correct Answer is:
B
`-NO_(2)` group is the most deactivating group because of strong -I and - M effect.
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