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Chapter 16: PROBLEM 16.38 (page 635)

Question: Draw all possible stereoisomers of hepta-2,4-diene and label each double bond as E or Z.

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E, Z isomers

A method is employed to name alkene like stereoisomers based on the positions of the functional group along with the double bond.

When the higher priority groups are on the same side across the double bond, the isomer is named as Z-isomer and when they face different side, the isomer is named E-isomer.

Examples are shown below:

Stereoisomers of hepta-2,4-diene

The different stereoisomers of the compound are given below:

(2Z,4Z)-hepta-2,4-diene

(2E,4E)-hepta-2,4-diene

(2E,4Z)-hepta-2,4-diene

(2Z,4E)-hepta-2,4-diene

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Most popular questions from this chapter

Question: a. Draw the two isomeric dienes formed when ${CH}_{2} = {CHCH}_{2} CH (Cl) CH {({CH}_{3})}_{2}$ is treated with an alkoxide base.

b. Explain why the major product formed in this reaction does not contain the more highly substituted alkene.

Question: Explain why ferulic acid, a natural product found in rice, oats, and other plants, is both an antioxidant and a sunscreen.

Question: Draw the product formed when each diene and dienophile react in a Diels–Alder reaction.

Question: Zingiberene and β-sesquiphellandrene, natural products obtained from ginger root, contain conjugated diene units. Which diene reacts faster in the Diels–Alder reaction and why?