H 1 , H 8 a. equivalent H 2 , H 7 b. enantiotopic H 3 , H 7 c. diastereotopic H

Question

H1, H8                                         a. equivalent

H2, H7                                         b. enantiotopic

H3, H7                                         c. diastereotopic

H4, H5                                       d. constitutional heterotopic

H5, H6                                      e. not a.-d.

I am having trouble understanding the following concept of topicity, if anyone can help me out. I am studying for my exam in a week, so I need to understand this, so if you do answer this please explain why the answer is the answer. Thank you so much.

Explanation / Answer

H1, H8 are equivalent protons, same arrangement

H2,H7 are eneantiotropic ,

enantiotopic refers to the relationship between two groups in a molecule which, if one or the other were replaced, would generate a chiral compound. The two possible compounds resulting from that replacement would be enantiomers.

H3, H7 diasterotopic

diastereotopic refers to the relationship between two groups in a molecule which, if replaced, would generate compounds that are diastereomers.

H4, H5 are constitutional heterotopic , gemotrical isomers will genertae

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