Question

IUPAC name of the following compound is:

$C{H}_3-CH\left(C_2{H}_5\right)-C{H}_2-CH\left(OH\right)-C{H}_3$

• A. 4-Methyl -2- hexanol
• B. 4-ethyl -2- pentanol
• C. 2-ethyl -2- pentanol
• D. 3-methylhexanol

Answer 1

The correct option is A 4-Methyl -2- hexanol

IUPAC name of $C{H}_3-CH\left(C_2{H}_5\right)-C{H}_2-CH\left(OH\right)-C{H}_3$ is 4-methyl -2- hexanol.
The parent compound contains a 6 C atom chain and a hydroxyl group. Hence, it is a derivative of hexanol. The hydroxyl group is present on the second C atom and methyl substituent is present on the fourth C atom.

Note: The longest chain of C atoms containing the $-OH$ group is selected as the parent alkane and numbered from the end closer to $-OH$ group.

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