MCQ
The IUPAC name of CH3−C(CH3)(OH)CH2−CH(CH3)2 is:
- A2,4-Dimethylpentan-2-ol
- B2,4-dimethylpentan-4-ol
- C2,2-dimethylbutane
- D2,4,4-trimethylbutan-2-ol
✓
Answer
- 2,4-Dimethylpentan-2-ol
Explanation:
In the longest carbon chain, −OH group is closest to the left-hand side, therefore we number from the left-hand side.
There is 5 carbon in the longest chain, in second and fourth positions methyl group is attached and in second position there is an alcoholic group. Thus IUPAC name is 2,4-Dimethyl pentan-2-ol.
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