The names of functional groups in the following compound X are:
Correct answer: C. Secondary alcohol, nitrile, and aryl ring
- A. Secondary alcohol, nitrile, and phenol ring
- B. Secondary alcohol, amine, and benzene ring
- C. Secondary alcohol, nitrile, and aryl ring
- D. Primary alcohol, nitrile, and benzene ring
Explanation
The functional groups are: secondary alcohol, nitrile, and benzene/aryl ring.Option A incorrectly mentions phenol as there is no hydroxyl group directly bonded to the benzene ring.Option B incorrectly mentions amine, as for an amine, the nitrogen atom must be bonded to at least three other species/atoms, but in this case, nitrogen is directly bonded to one carbon atom, indicating a C-N triple bond which is characteristic of nitriles.Option C correctly lists all three functional groups.Option D incorrectly mentions primary alcohol, as for the alcohol group to be primary it must have been terminal/present at the end of the alkyl group, which is not the case here as -OH group is mentioned in the structural formula as being in the middle of the alkyl group.
This question appeared on the UHS MDCAT 2019 paper, which you can sit online with every answer explained.
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About Functional Groups
Functional groups are specific atoms or atom groups that determine the characteristic reactions and properties of organic compounds. Coverage includes alkenes, alkynes, halo, hydroxyl, ether, carbonyl, carboxyl, ester, amino and nitro groups, together with their structures, nomenclature and related homologous series.
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