Which of the following is the strongest ortho, para directing group :
Correct answer: A. -OH
- A. -OH
- B. -OCH3
- C. -Cl
- D. -CH3
Explanation
The correct answer is -OH because it is the strongest ortho, para directing group among the options provided. -OCH3, -Cl, and -CH3 are progressively weaker directing groups in terms of reactivity. Therefore, -OH is the best choice for directing the substitution reactions in the ortho and para positions.
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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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