Product obtained by heating 4-Amino butanoic acid

Options

A.
B.
C.
D.

Answer

To determine the product obtained by heating 4-Aminobutanoic acid, we will follow these steps:

### Step 1: Draw the Structure of 4-Aminobutanoic Acid
4-Aminobutanoic acid has four carbon atoms in its chain, with an amino group (-NH2) at the fourth carbon and a carboxylic acid group (-COOH) at the first carbon. The structure can be represented as follows:

```
NH2
|
CH2-CH2-COOH
```

### Step 2: Identify the Functional Groups
In the structure, we have:
- An amino group (-NH2) at the 4th carbon.
- A carboxylic acid group (-COOH) at the 1st carbon.

### Step 3: Heating the Compound
When 4-Aminobutanoic acid is heated, a dehydration reaction occurs. This means that a water molecule is eliminated. The water molecule is formed from the hydroxyl group (-OH) of the carboxylic acid and one hydrogen atom from the amino group.

### Step 4: Elimination of Water
The elimination of water leads to the formation of a cyclic structure. The remaining parts of the molecule will bond to form a ring. The reaction can be summarized as follows:

1. Remove -OH from the carboxylic acid.
2. Remove -H from the amino group.

This results in the formation of a cyclic compound.

### Step 5: Draw the Final Product
After the elimination of water, the structure can be represented as follows:

```
O
//
CH2-CH2
\
NH
```

This structure represents a cyclic compound known as "pyrrolidine-2-carboxylic acid" or "4-Aminobutanoic acid" in its cyclic form.

### Step 6: Identify the Correct Option
From the options provided in the question, the product formed after heating 4-Aminobutanoic acid corresponds to option 3.

### Final Answer
The product obtained by heating 4-Aminobutanoic acid is the cyclic compound represented in option 3.

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