Question

Write IUPAC name of the following alkanes:

1. (CH3)3-C-CH2-CH2-CH3
Would the name be 2,2,4-trimethylhexane?

2. CH3CHCH2CHCH2CH2CH3 with a CH3 attached to the 2nd carbon and the 4th carbon.
Would the name be 2,4-diheptane?

3. CH3-C-C-CH3 with a CH3 attached to the top and bottom of both C (4 CH3 total).
Would the name be 1,2-trimethylethane?

If someone could please check to see if my answers are right so I know if I am doing this correctly, I would very much appreciate it. Thanks!

Answer 1

(CH3)3 how is that?

What are those three methyls connected to? What is on the -C- carbon, something has to be attached.
2. yes
3. it is a butane, 4 carbons, and a tetramethyl (2,3)

Answer 2

1. (CH3)3-C-CH2-CH2-CH3
Would the name be 2,2,4-trimethylhexane?

Longest chain is 5 so a pentane derivative.

1,1-dimethypentane

2. CH3CHCH2CHCH2CH2CH3 with a CH3 attached to the 2nd carbon and the 4th carbon.
Would the name be 2,4-diheptane?

2,4-dimethlyheptane

as we can't distinguish between the optical isomers

3. CH3-C-C-CH3 with a CH3 attached to the top and bottom of both C (4 CH3 total).
Would the name be 1,2-trimethylethane?

2,4 dimethylbutane