Question

IUPAC name of $C{H}_3-\underset{C{H}_3}{\underset{|}{CH}}-C{H}_2-\underset{CN}{\underset{|}{CH}}-C{H}_3$ is

• A. 2 -cyano - 3- methyl hexane
• B. 2 - methyl - 4 - cyano pentane
• C. 2,4 - dimethyl pentane nitrile
• D. 2,2 - dimethyl - 4 - cyano pentane

Answer 1

The correct option is C

2,4 - dimethyl pentane nitrile

$\stackrel{5}{C}{H}_3-\underset{C{H}_3}{\underset{|}{\stackrel{4}{CH}}}-\stackrel{3}{C}{H}_2-\underset{\underset{1}{C}N}{\underset{|}{\stackrel{2}{CH}}}-C{H}_3$

The longest chain contains 5 carbons with the functional group $(-CN$), the suffix used is nitrile.