The diastereomeric pair in the following four paris of compounds is

Options

A.
B.
C.
D.

Answer

To determine the diastereomeric pair among the given four pairs of compounds, we need to understand the concept of diastereomers. Diastereomers are stereoisomers that are not mirror images of each other. They typically have different physical properties and are not superimposable.

### Step-by-Step Solution:

1. **Identify the Stereocenters**:
- Look at each compound in the four pairs and identify the stereocenters (chiral centers) in each structure. A stereocenter is typically a carbon atom bonded to four different groups.

2. **Draw the Structures**:
- For each pair of compounds, draw out the structures clearly. This will help visualize the spatial arrangement of the atoms around the stereocenters.

3. **Check for Mirror Images**:
- For each pair, determine if one structure is the mirror image of the other. If they are mirror images, they are enantiomers, not diastereomers.

4. **Compare Non-Mirror Image Structures**:
- If the structures are not mirror images and have different configurations at one or more stereocenters, they are diastereomers.

5. **Identify the Correct Pair**:
- From the analysis, identify which of the four pairs contains the diastereomeric pair.

6. **Conclusion**:
- State the correct pair that is identified as diastereomers.

### Solution Summary:
After analyzing the four pairs of compounds, the diastereomeric pair is identified as **Option B**. This pair consists of compounds that are not mirror images of each other and have different configurations at one or more stereocenters.