Question

The correct relationship between the molecules X and Y is that, they are _ _ _.

• A. regioisomers
• B. diastereomers
• C. enantiomers
• D. identical molecules

Hint:

If all chiral centers are inverted → enantiomersIf only some are inverted → diastereomers

Answer 1

The Correct Option is B

Step 1: Note that both have several stereocentres.
X and Y each carry more than one stereocentre, so they are stereoisomers of one another.

Step 2: Compare the configurations.
The two structures differ at some stereocentres but not at all of them, so they are not mirror images.

Step 3: Apply the rule.
Mirror images need every stereocentre inverted. When only some centres differ, the pair is diastereomeric.

Step 4: Answer.
\[ \boxed{\text{diastereomers}} \]