The reaction of an amide with bromine and alkali to form a primary amine is called:-

Answer

To solve the question regarding the reaction of an amide with bromine and alkali to form a primary amine, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reaction Type**: The reaction involves an amide (R-C(=O)-NH2) reacting with bromine (Br2) in the presence of an alkali (KOH). This is a specific type of reaction that leads to the formation of primary amines.

2. **Understand the Mechanism**: The reaction mechanism begins with the formation of an N-bromoamide when the amide reacts with bromine. The bromine adds to the nitrogen atom of the amide, resulting in the formation of R-C(=O)-NBr.

3. **Elimination of HBr**: The N-bromoamide then undergoes a reaction where HBr is eliminated. This step is crucial as it leads to the formation of an acyl nitrene intermediate.

4. **Rearrangement**: The acyl nitrene undergoes rearrangement to form an isocyanate (R-N=C=O). This rearrangement is an important step in the process.

5. **Hydrolysis**: The isocyanate then reacts with water (hydrolysis) in the presence of KOH, leading to the formation of a primary amine (RNH2) and potassium carbonate (K2CO3) as a byproduct.

6. **Conclusion**: The overall reaction can be summarized as the conversion of an amide to a primary amine through the steps outlined above. This specific reaction is known as the **Hofmann Bromamide Reaction**.

### Final Answer:
The reaction of an amide with bromine and alkali to form a primary amine is called the **Hofmann Bromamide Reaction**.

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