Draw the structure of 3,7-dimethyl-4-nonyne

Draw the structure of 3,7-dimethyl-4-nonyne.

The correct answer and explanation is :

Here is the structure of 3,7-dimethyl-4-nonyne:

Explanation:

1. Parent Chain (Non-):

• The name “nonyne” indicates a 9-carbon (nonane-based) parent chain with a triple bond.
• The “-yne” suffix means there is at least one triple bond.

1. Triple Bond Location (4-nonyne):

• The triple bond starts at carbon 4, meaning it spans between carbon 4 and carbon 5.

1. Substituents (3,7-dimethyl):

• “Dimethyl” means there are two methyl (-CH₃) groups.
• Their positions at carbon 3 and carbon 7 are given in the name.

Step-by-Step Drawing:

• Start with a nine-carbon chain numbered 1 to 9.
• Insert a triple bond between carbon 4 and carbon 5.
• Attach methyl groups (-CH₃) at carbon 3 and carbon 7.

Here is the structural diagram of 3,7-dimethyl-4-nonyne.