Question

what is the iupac name of this compound?
4 - isopentyinonane
3 - ethyl - 4 - propyinonane
3,3 - dimethyl - 4 - propyinonane
3,3 - dimethyl - 4 - butyinonane
3 - ethyl - 4 - butyinonane
question 9 (10 points)
what is the structure of 2 - methylhexane?
(ch₃)₂chch₂ch₂ch₃
(ch₃)₂chch₂ch₂ch₂ch₃
(ch₃)₃cch₂ch₂ch₂ch₃

Explanation:

1. For the first question:

• First, find the longest carbon - chain. The longest chain has 9 carbon atoms (nonane).
• Then, number the chain. There are two methyl groups on the 3 - position and a propyl group on the 4 - position. So the IUPAC name is 3,3 - dimethyl - 4 - propylnonane.

1. For the second question:

• The parent chain of 2 - methylhexane has 6 carbon atoms (hexane) with a methyl group on the 2 - position. The structure is \((CH_3)_2CHCH_2CH_2CH_2CH_3\).

Answer:

1. C. 3,3 - dimethyl - 4 - propylnonane
2. B. \((CH_3)_2CHCH_2CH_2CH_2CH_3\)