Practice Problems- Naming

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MayaKhalil_1L
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Joined: Wed Sep 21, 2016 2:59 pm

Practice Problems- Naming

Postby MayaKhalil_1L » Wed Mar 08, 2017 8:13 pm

IMG_8012.PNG


For this one, I put 2-methylybutane. Is this wrong? If so, how would i know it's supposed to be isopentane.

IMG_8015.PNG


And similarly, for this one I put 6-ethyl-2,3,4,5-tetramethylheptane.

Thanks in advance

Chem_Mod
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Re: Practice Problems- Naming

Postby Chem_Mod » Wed Mar 08, 2017 8:37 pm

Hi,

neopentane is the common name where 2-methylbutane is the IUPAC name. They're the same structure.

For the second structure, what you have given (heptane) isn't right. The structure's backbone is an octane because the longest uninterrupted chain has 8 carbons.

Hope this helps.


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