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Chapter 4: Q4P (page 146)

Draw skeletal structures for the compounds in Problem 3, including any cis-trans isomers.

Short Answer

Expert verified

The skeletal structures for the compounds in Problem 3, including any cis-trans isomers

Step by step solution

01

Step 1: The skeletal structure

In this series of atoms bonded together, it is aform of the essential structure of the compound. This skeleton can consist of chairs, branches, and rings of bonded atoms. Example: The skeletal structure of a sec-butyl tert-butyl ether is shown below

02

Definition of the cis and trans isomer

Isomersare compounds with the same molecular formula but with a different arrangement of atoms.

Cis-isomer is represented with both the substituents pointing in one direction.

Trans-isomer is represented with both the substituents pointing in opposite directions.

03

Subpart (a)

The skeletal structure of compound a is shown below.

This compound consists of both the cis and trans isomers.

04

Subpart (b)

The skeletal structure of compound b is shown below.

Here, the structure has the possibility of forming the cis form only.

05

Subpart (c)

The skeletal structure of compound c is shown below.

This compound also consists of both the cis and trans isomers.

06

Subpart (d)

The skeletal structure of compound d is shown below.

The terminal alkene cannot have cis-trans isomerization.

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Most popular questions from this chapter

Draw the structure for a compound with molecular formula C2H2I2F2

a. that is optically inactive because it does not have an asymmetric center.

b. that is optically inactive because it is a meso compound.

c. that is optically active.

Which of the following compounds has one or more asymmetric carbons?

Stereoisomers with two asymmetric centres are called ___ if the configuration of both asymmetric centers in one stereoisomer is the opposite of the configuration of the asymmetric centers in the other stereoisomer.

b. Stereoisomers with two asymmetric centers are called ___ if the configuration of both asymmetric centers in one stereoisomer is the same as the configuration of the asymmetric centers in the other stereoisomer.

c. Stereoisomers with two asymmetric centers are called ___ if one of the asymmetric centers has the same configuration in both stereoisomers and the other asymmetric center has the opposite configuration in the two stereoisomers.

Question:Indicate whether each of the following structures is (R)-2-chlorobutane or (S)-2-chlorobutane

Question:

a. Draw all the isomers with molecular formula C6H12 that contain a cyclobutane ring. (Hint: There are seven.)

b. Name the compounds without specifying the configuration of any asymmetric centers.

c. Identify

1. constitutional isomers 2. Stereoisomers 3. cis–trans isomers 4. chiral compounds

5. achiral compounds 6. Meso compounds 7. Enantiomers 8. diastereomers
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