Which of the following compounds is an enamine?

Options

A.
B.
C.
D.

Explanation

To determine which of the given compounds is an enamine, we need to understand the structure of enamines. An enamine is a compound that contains a carbon-carbon double bond (C=C) adjacent to a nitrogen atom that is part of an amine group (NH2, NH, or N).

Let's break down the steps to identify the enamine:

### Step 1: Understand the Definition of Enamine
An enamine is formed when a secondary amine reacts with an aldehyde or ketone, resulting in a structure that has a double bond between a carbon atom and a carbon atom adjacent to a nitrogen atom.

### Step 2: Analyze the Given Options
Assume we have four options (A, B, C, D) to evaluate:

- **Option A**: Check if it has a C=C bond and an amine group.
- **Option B**: Check if it has a C=C bond and an amine group.
- **Option C**: Check if it has a C=C bond and an amine group.
- **Option D**: Check if it has a C=C bond and an amine group.

### Step 3: Identify the Structure of Each Compound
- For **Option A**: If it has a double bond with nitrogen (C=N), it is not an enamine.
- For **Option B**: If it is just an amine without a double bond, it is not an enamine.
- For **Option C**: If it has a carbon-carbon double bond (C=C) and is adjacent to an amine group (NH2, NH, or N), it fits the definition of an enamine.
- For **Option D**: If it has a double bond with nitrogen (C=N), it is not an enamine.

### Step 4: Conclusion
After analyzing the options, we find that **Option C** satisfies the conditions of an enamine, as it has a carbon-carbon double bond adjacent to an amine group.

### Final Answer
**Option C is the correct answer as it is an enamine.**

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