Choose the substituent that will direct meta addition on a benzene ring.
Correct answer: C. -COOH
- A. - NH2
- B. - Br
- C. -COOH
- D. - OH
Explanation
The correct answer is -COOH. The carboxyl group is an electron withdrawing group, making it a meta directing group on a benzene ring. This means that it will direct the incoming electrophile to the meta positions. Options A, B, and D are incorrect because they are ortho/para directing groups due to their electron-donating nature.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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