Question

The IUPAC name of the compound having formula :
${CH}_3-\stackrel{C{H}_{2}C{H}_3}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}-}CH}=C{H}_2$

• A. 3,3,3-trimethylprop-1-ene
• B. 1,1,1-trimethylprop-2-ene
• C. 3,3-dimethylpent-1-ene
• D. 2,2-dimethyl-3-ene

Answer 1

Answer: (C)

3,3-dimethylpent-1-ene

$\bullet$ Here numbering starts from double bonded carbon atom.

$\bullet$ At $3^{rd}$ carbon, $2$ methyl groups are present.

$\bullet$ Parent chain has $5$ carbons.

$\bullet$ So, IUPAC name is $3,3-dimethylpent-1-ene$