Question

$C{H}_{3}C{H}_2-C{H}_2-\underset{CH=C{H}_2}{\underset{|}{CH}}-C{H}_{2}C{H}_{2}C{H}_3$

The IUPAC name is:

• A. 4 - ethelene - 1 - heptane
• B. 3 - propyl - hex - 1 - ene
• C. 4 - propyl - hex - 6 - ene
• D. 3 - propyl - 1 - heptane

Answer 1

The correct option is B 3 - propyl - hex - 1 - ene

Double bond gets preference as compared to longest chain. So carbon with double bond gets position 1 and the chain has six carbon atoms. At 3' position propyl group with three carbon atoms is present.