Which of the following does not undergo diazotization reaction?

Options

A.
B.
C.
D.

Answer

To determine which of the following does not undergo diazotization reaction, we first need to understand what diazotization is and the conditions required for it to occur.

### Step-by-Step Solution:

1. **Understanding Diazotization**:
Diazotization is a chemical reaction that involves the conversion of primary amines into diazonium salts. This reaction typically occurs when a primary amine reacts with nitrous acid (HNO2) at low temperatures.

2. **Identifying Amines**:
The question requires us to analyze different types of amines (primary, secondary, and tertiary) to see which one does not undergo diazotization.

3. **Types of Amines**:
- **Primary Amines**: These can undergo diazotization because they can be converted into diazonium salts.
- **Secondary Amines**: These do not undergo diazotization because they do not have a hydrogen atom attached to the nitrogen that can be replaced by a diazonium group.
- **Tertiary Amines**: Similar to secondary amines, tertiary amines also do not undergo diazotization for the same reason.

4. **Conclusion**:
Based on the above analysis, secondary and tertiary amines do not undergo diazotization. Therefore, if the options provided include secondary or tertiary amines, they would be the correct answers to the question.

### Final Answer:
The amine that does not undergo diazotization is either a secondary amine or a tertiary amine.