Substituents on an aromatic ring can have several effects on electrophilic aroma

Question

Substituents on an aromatic ring can have several effects on electrophilic aromatic substitution reactions. Substituents can activate or deactivate the ring to substitution, donate or withdraw electrons inductively, donate or withdraw electrons through resonance, and direct substitution either to the ortho/para or to the meta positions. From the following lists, select the substituents that have the indicated property. The substituents are written as -XY, where X is the atom directly bound to the aromatic ring.

Explanation / Answer

SO3H and CF3 are meta directing groups

Cl is a ring deactivating Ortho, Para directing group

CH3 mild Ortho, Para directing group

OH strong Ortho, Para directing group

So Cl, CH3 and OH are Ortho, Para directing groups

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