Give the IUPAC name and structure for (CH3)2CBrCH2CH(CH3)2

Question

Draw the structure and give the name.

Answer 1

The IUPAC name for the given compound is 2-bromo-3,3-dimethylpentane.

The structure of the compound is:

Br

|

CH3-C-

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CH3-CH-CH(CH3)-CH3

|

CH3

The name is derived as follows:

1. The longest continuous chain of carbon atoms is 5, so the parent chain is pentane.
2. Numbering the chain from the end closest to the bromine gives the bromine substituent the lower possible number. Thus, the bromine is located at the second carbon atom from the left end of the chain.
3. The substituent on carbon 2 is a methyl group, so it is named 2-methylpentane.
4. The substituent on carbon 3 is also a methyl group, so it is named 3,3-dimethylpentane.
5. Finally, the bromine substituent is named as bromo- to give the complete name 2-bromo-3,3-dimethylpentane.