Question

What is the IUPAC nomenclature of

Answer 1

The given compound to us belongs to the Cyclohexane group. Cyclohexane are the organic molecules which have a six membered closed ring. These compounds are saturated and contain double or triple bonds.

Complete answer:
The compound given to us has a substitute attached to the ring. Since only one substituent is present, we’ll give the substitute the highest priority in numbering. We will first write the IUPAC name of the substituent.

The substituent contains 3 carbons with no double bonds; hence we can call it Propane. But the propane molecule is attached to the cyclohexane ring at the ${C_2}$ position, hence we’ll name it as 2-Propane. If it was an individual molecule, we would have called it 2-Propane itself, but since it is a substituent, the substituent molecule would be Propane-2-yl commonly known as 2-Propyl.
The parent chain/compound is Cyclohexane. Adding the substituent as a prefix to the parent compound, we get the final IUPAC nomenclature as Propane-2-yl cyclohexane. This is the required answer.

Note:
Always remember to give the substituent the first priority, if more than one substituent are present the nomenclature would be done alphabetically. The substituent should be given the minimum number during the numbering of the carbon atoms in the parent chain.
If more than one identical substituents are present the prefixes di, tri, tetra are used. Always consider the longest chain as the parent chain in case of Aliphatic Compounds. In case of aromatic and cyclo compounds, the ring will always be the parent compound.