16. What is the IUPAC name of the following compound? O N-ethyl-N-methylcyclopentanamine O N-cyclopentyl-N-methylethanamine O N-ethyl-N-methylpentanamine O N-methyl-N-ethylcyclopentylamine

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### Question 16: Chemical Nomenclature

**What is the IUPAC name of the following compound?**

The question is accompanied by a diagram of the chemical structure, featuring a cyclopentane ring attached to a nitrogen atom, with an ethyl group and a methyl group also bonded to the nitrogen.

**Options:**
1. \( N \)-ethyl-\( N \)-methylcyclopentanamine
2. \( N \)-cyclopentyl-\( N \)-methylethanamine
3. \( N \)-ethyl-\( N \)-methylpentanamine
4. \( N \)-methyl-\( N \)-ethylcyclopentylamine

**Explanation of Diagram:**
The diagram depicts a nitrogen atom (N) bonded to three different groups:
- A cyclopentane ring.
- An ethyl group (CH₂CH₃).
- A methyl group (CH₃).

**Explanation:**
Nomenclature for this compound involves identifying the longest chain attached to the nitrogen and naming the substituents in alphabetical order with appropriate N-prefixes to indicate their attachment to the nitrogen atom.

The correct IUPAC name identifies:
- The presence of the cyclopentane ring as the primary structure.
- An ethyl group and a methyl group both bonded to the nitrogen atom.

Therefore, based on IUPAC naming conventions, the correct name is:

**\( N \)-ethyl-\( N \)-methylcyclopentanamine**
Transcribed Image Text:### Question 16: Chemical Nomenclature **What is the IUPAC name of the following compound?** The question is accompanied by a diagram of the chemical structure, featuring a cyclopentane ring attached to a nitrogen atom, with an ethyl group and a methyl group also bonded to the nitrogen. **Options:** 1. \( N \)-ethyl-\( N \)-methylcyclopentanamine 2. \( N \)-cyclopentyl-\( N \)-methylethanamine 3. \( N \)-ethyl-\( N \)-methylpentanamine 4. \( N \)-methyl-\( N \)-ethylcyclopentylamine **Explanation of Diagram:** The diagram depicts a nitrogen atom (N) bonded to three different groups: - A cyclopentane ring. - An ethyl group (CH₂CH₃). - A methyl group (CH₃). **Explanation:** Nomenclature for this compound involves identifying the longest chain attached to the nitrogen and naming the substituents in alphabetical order with appropriate N-prefixes to indicate their attachment to the nitrogen atom. The correct IUPAC name identifies: - The presence of the cyclopentane ring as the primary structure. - An ethyl group and a methyl group both bonded to the nitrogen atom. Therefore, based on IUPAC naming conventions, the correct name is: **\( N \)-ethyl-\( N \)-methylcyclopentanamine**
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