Question

how many diastereomers are there of the molecule shown below? previous

Explanation:

Step1: Identify chiral centers

The molecule has 2 chiral centers.

Step2: Calculate total stereoisomers

Using the formula $2^n$ (where $n$ is the number of chiral centers), total stereoisomers $= 2^2=4$.

Step3: Determine enantiomers and diastereomers

One pair is enantiomers. So diastereomers = total stereoisomers - 1 (pair of enantiomers) = 4 - 1 = 3.

Answer:

3