Question

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

What will be the IUPAC name of given compount?

• A. 2, 5-diethyl-4-methylhexane
• B. 3, 4, 5-trimethyloctane
• C. 2, 5, 6-trimethyloctane
• D. 3, 5-dimethyl-6-ethylheptane

Answer 1

The correct option is C 2, 5, 6-trimethyloctane

$C{H}_3-\underset{\underset{\underset{2}{C{H}_2}\underset{1}{C{H}_3}}{|}}{CH}-\stackrel{\stackrel{C{H}_3}{|}}{\underset{4}{CH}}-\underset{5}{C{H}_2}-\stackrel{\stackrel{7C{H}_2\stackrel{8}{C{H}_3}}{|}}{\underset{6}{CH}}-C{H}_3$

$3,4,6-trimethyloctane$

Reason:- (Longest chain of carbon is chosen first)

Hence, the correct option is $\text{C}$