Question

what is the iupac name of the compound below?
3,6 - diethyl - 3 - methyl - 8 - decathiol
3,6 - diethyl - 3 - methyl - 8 - decanethiol
5,8 - diethyl - 8 - methyl - 5 - decanethiol
5,8 - diethyl - 8 - methyl - 5 - decathiol
3 - butyl - 6 - ethyl - 6 - methyl - 3 - octanethiol

Explanation:

Step1: Identify the longest carbon - chain

The longest carbon - chain has 10 carbon atoms (decane).

Step2: Locate the functional group

The functional group is a thiol (-SH), and it is on the 8th carbon atom. The suffix for a thiol in IUPAC naming is "anethiol", so it is decanethiol.

Step3: Identify and number the substituents

There are two ethyl groups (at 3rd and 6th carbon atoms) and one methyl group (at 3rd carbon atom).

Answer:

3,6 - diethyl - 3 - methyl - 8 - decanethiol