Chapter 17: Q.1. (page 641)
Question: Draw all possible resonance structures for the antihistamine diphenhydramine, the active ingredient in Benadryl.

Short Answer
Answer
Resonating structures of diphenhydramine.

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Chapter 17: Q.1. (page 641)
Question: Draw all possible resonance structures for the antihistamine diphenhydramine, the active ingredient in Benadryl.

Answer
Resonating structures of diphenhydramine.

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Give the IUPAC name for each compound.
(a)

(b)

(c)

(d)

Question: Give the IUPAC name for each compound.
Question: Which compounds are aromatic? For any compound that is not aromatic, state why this is so.
Question: Which of the diethylbenzene isomers (ortho, meta, or para) corresponds to each set of NMR spectral data?
[A] NMR signals: 16, 29, 125, 127.5, 128.4, and 144 ppm
[B] NMR signals: 15, 26, 126, 128, and 142 ppm
[C] NMR signals: 16, 29, 128, and 141 ppm
Question: Hydrocarbon A possesses a significant dipole, even though it is composed of only C-C and C-H bonds. Explain why the dipole arises and use resonance structures to illustrate the direction of the dipole. Which ring is more electron rich?

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