Question

question 3 (1 point)
the iupac name of compound ( \text{ch}_3\text{c}(\text{ch}_3)\text{chch}_3 ) is
a) ( 2 - \text{methylbut}-2-\text{ene} )
b) ( 3 - \text{methylbut}-3-\text{ene} )
c) ( 3 - \text{methylbut}-2-\text{ene} )
d) ( 1 - \text{methylbut}-2-\text{ene} )
e) ( 2 - \text{methylbut}-3-\text{ene} )

Explanation:

Step1: Determine the parent chain

The parent chain is the longest carbon chain containing the double bond. Here, it is a 4 - carbon chain (but -).

Step2: Locate the double bond

The double bond is between the second and third carbon atoms. So, it is but - 2 - ene.

Step3: Identify the substituent

There is a methyl group ($\text{CH}_3$) on the second carbon atom.

Answer:

A. 2 - methylbut - 2 - ene