MCQ
The IUPAC name of CH3​−C(CH3​)(OH)CH2​−CH(CH3​)2​ is:
  • A
    2,4-Dimethylpentan-2-ol
  • B
    2,4-dimethylpentan-4-ol
  • C
    2,2-dimethylbutane
  • D
    2,4,4-trimethylbutan-2-ol

Answer

  1. 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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