What is the IUPAC name of the following compound? 2-ethyl-2-tertbutylethan-1-ol

Question

What is the IUPAC name of the following compound? 2-ethyl-2-tertbutylethan-1-ol 2-ethyl-3, 3-dimethylbutan-2-ol 2, 2, 3-trimethylpentan-3-ol 1, 1, 1 -trimethyl-2-butanol Phenol, PhOH, is a stronger acid than ethanol, CH_3CH_2OH. Which of the following statements is INCORRECT? The phenoxide ion is resonance stabilised by the aromatic ring. The ethoxide ion has no resonance stabilisation. Phenol has a lower pKa value than ethanol. In the reaction with NaOH as base, ethanol will be deprotonated to a greater extent than phenol.

Explanation / Answer

21. The correct IUPAC name is 2,2,3-trimethylpentan-3-ol.

Longest carbon chain contains 5 C atoms.

The parent compound contains 5 C atoms and an -OH group. Hence, it is pentanol. Three methyl groups are present as substituents. Hence prefix tri is used. The numbering is done in such a way so as to give lowest locants to substituents.

22. The statement (4) is incorrect.
In the reaction with NaOH as base, phenol will be deprotonated but ethanol will not.

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