Substituents on an aromatic ring can have several effects on electrophilic aroma
ID: 869431 • Letter: S
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
Groups that are activating the ring towards substitution among the first list are : -OH, -OCH3
Groups that withdraw the electrons through resonance among the second list are : -SO3H, -NO2
Groups that are ortho/para directing among the third list are : -OCH3, -NH2, -Cl