Chapter 16: PROBLEM 16.20 (page 623)
Question: Rank the following dienes in order of increasing reactivity in a Diels–Alder reaction.
a.
b.
c.
Short Answer
Answer
Order of reactivity of dienes:
Chapter 16: PROBLEM 16.20 (page 623)
Question: Rank the following dienes in order of increasing reactivity in a Diels–Alder reaction.
a.
b.
c.
Answer
Order of reactivity of dienes:
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Get started for freeQuestion. Draw the structure consistent with each description.
a. (2E,4E)-octa-2,4-diene in the s-trans conformation
b. (3E,5Z)-nona-3,5-diene in the s-cis conformation
c. (3Z,5Z)-4,5-dimethyldeca-3,5-diene. Draw both the s-cis and s-trans conformations.
Question: Use resonance theory explains why the labeled C-O bond lengths are equal in the acetate ion.
Question: Which of the following species are conjugated?
a.
b.
c.
d.
e.
Question: Neuroprotectin D1 (NPD1) is synthesized in the body from highly unsaturated essential fatty acids. NPD1 is a potent natural anti-inflammatory agent.
a. Label each double bond as conjugated or isolated.
b. Label each double bond as E or Z.
c. For each conjugated system, label the given conformation as s-cis or s-trans.
Question: Draw a stepwise mechanism for the following reaction.
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