why would the circled protons on the left be diasteriotopic and the circled protons on the...

Question

Question

why would the circled protons on the left be diasteriotopic and the circled protons on the right be identical. i dont see the difference.

PLEASE thoroughly explain
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Answer 1

Answer #1

Diastereomers are the optical isomers but not mirror images of each other. A proton is diastereomeric if it results in format

Answer 2

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