Do these two names refer to the same compound: N-butylcyclohexylamine vs N-butylcyclohexanamine?

I think they do.

Thank you DrBob222 for answering my question!

To determine whether the two names refer to the same compound, you can break down the names and compare their structures.

1. N-butylcyclohexylamine: This compound consists of a butyl group (four carbon atoms in a linear chain) attached to a cyclohexyl group (six carbon atoms in a ring structure) through an amine functional group (containing a nitrogen atom bonded to one of the carbons in the cyclohexyl ring).

2. N-butylcyclohexanamine: This compound also consists of a butyl group attached to a cyclohexyl group, but in this case, the functional group is an amine (containing a nitrogen atom bonded to one of the carbons in the cyclohexyl ring).

Comparing the structures, we see that the only difference is in the suffix of the names. The term "cyclohexylamine" in the first compound suggests that the amine functional group is attached to the cyclohexyl group, while the term "cyclohexanamine" in the second compound suggests that the amine functional group is attached to the cyclohexane group.

Cyclohexane and cyclohexyl are different compounds. Cyclohexane refers to a cyclic hydrocarbon with a six-carbon ring, while cyclohexyl refers to a cyclohexane ring with a substituent attached to it.

Therefore, "N-butylcyclohexylamine" and "N-butylcyclohexanamine" are different compounds, as they have different substituents attached to the cyclohexane ring.