Question 13.1: What is the IUPAC name of the following alkene?
What is the IUPAC name of the following alkene?
\begin{matrix}\qquad \qquad \qquad \,\,\,\,\,\,\,\,\,\,\,\,\,\ H_3C\qquad CH_2CH_3 \,\,\,\,\,\,\,\,\,\,\,\,\,\\ CH_3CH_2CH_2—\overset{|}{C} =\overset{|}{C}—CH_3 \end{matrix}
ANALYSIS Identify the parent compound as the longest continuous chain that contains the double bond. The location of the double bond and any substituents are identified by numbering the carbon chain from the end nearer the double bond.
STEP 1: The longest continuous chain containing the double bond has seven carbons— heptene. In this case, we have to turn a corner to find the longest chain
STEP 2: Number the chain from the end nearer the double bond. The first double-bond carbon is C4 starting from the left end but C3 starting from the right.
STEP 3: Two methyl groups are attached at C3 and C4.
