Multiple choice

Which of the following sets represents the meta-directing functional groups?

  1. -OH, -NR2, -CH3

  2. -NO, -SO3H, -CHO

  3. -NO2, -CN, -NR2

  4. -NO, -SO3H, -NR2

  5. -OH, -NR2, -SO3H
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A monosubstituted benzene, when treated with an electrophile, undergoes electrophilic aromatic substitution reactions. Each reaction yields a disubstituted benzene as the organic product, which can be identified using the descriptors ortho, para and meta products. Common ortho and para directing groups are: -OH, -NR2, -CH3, -NR2 etc. Common meta directing groups are: -NO, -SO3H, -CHO, -NO2, -CN etc.

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