9. Identify the functional group present in each of the following structures as

Question

9. Identify the functional group present in each of the following structures as a hydrate, above. Write your answer on the space below each structure. acetal, hemiacetal, or none of the You may use the choices more than once. (5 points) ?? ??, HO ?? 10. Fill in the missing intermediates for the series of reactions below. Be sure to use the spectroscopic clues to help shape your decisions. (12 points) MgBr PCC 2. dilute HCI/HO broad IR stretch at 3200 cm NaBH(OAc)s H,C-NH2 Hyo OH strong IR stretch at 1680 cm Molecular Formula: CioHISN

Explanation / Answer

Out of two questions, only the first question will be answered.

Question 9.

1. Hemiacetal

2. Acetal

3. None of the above

Reason: Hydrate is a gem-diol, but not vicinal-diol.

4. Acetal

5. Hemiacetal

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