Draw 2-ethyl-5-sec-butylheptane and what is the correct iupac name?
1 Answer
Aug 25, 2015
The correct IUPAC name is 4-ethyl-3,7-dimethylnonane.
Explanation:
The structure of 2-ethyl-5-sec-butylheptane is
The 7-carbon chain is the horizontal zig-zag line.
The ethyl group is on
But the longest continuous chain is the 9-carbon chain that runs from the top to the lower right.
We start numbering from the lower right, because that end is closer to more substituents — it gives us lower numbers.
There are methyl groups on
The IUPAC name is therefore 4-ethyl-3,7-dimethylnonane.