Which of the following is ortho and para directing group:
Correct answer: A. -OH
- A. -OH
- B. -OCH3
- C. -CHO
- D. -NH2
Explanation
OH and - NHCOCH 3 are ortho and para directing groups. These are also the electron donating groups and the attack of the incoming groups is at the ortho and para position.
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About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
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