IUPAC NAME for CH3CH2C(CH3)2CH(CH2CH3)CH3

[aatari]

I don't understand why CH3CH2C(CH3)2CH(CH2CH3)CH3 is 2 ethyl-3,3 dimethyl - pentane and not 3-methyl-4,4-dimethylhexane. When I expand the condensed formula above and count the longest carbon chain, it seem it is a hexane rather than pentane. Can someone please clarify?

Homework Statement

Write the IUPAC name for CH3CH2C(CH3)2CH(CH2CH3)CH3.

Homework Equations

none.

The Attempt at a Solution

3-methyl-4,4-dimethylhexane

 

[mfb]

Unless I misunderstand the CH2CH3 part, you are right with the hexane part:

CH₃ - CH₂ - C(CH₃)₂ - CH(CH₂CH₃) - CH₃

Although I would have expected, 3,3,4-trimethyl-hexane. Here it is.