5. Chirality

Identify the relationship between thefollowing organic compounds:

Identify the relationship between thefollowing organic compounds:

Are the following pairs identical, enantiomers, diastereomers, or constitutional isomers?

a.

b.

Are the following pairs identical, enantiomers, diastereomers, or constitutional isomers?

a.

b.

Are the following pairs identical, enantiomers, diastereomers, or constitutional isomers?

a.

b.

Indicate whether each of the structures in the second row is an enantiomer of, is a diastereomer of, or is identical to the structure in the top row.

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

Identify

5. achiral compounds

6. meso compounds

7. enantiomers

8. diastereomers

Are the following pairs identical, enantiomers, diastereomers, or constitutional isomers?

e.

f.

Are the following pairs identical, enantiomers, diastereomers, or constitutional isomers?

c.

d.

Define the relationship between each set of two molecules as chain isomers, positional isomers, functional group isomers, enantiomers, diastereomers, conformational isomers, or identical

(d)

In Assessment 9.26, what is the relationship between the enantiomers of compound A and the enantiomers of compound B?

What type of isomerism is indicated by each of the following pairs of molecules? Be as specific as possible.

(d)

(i) Which of the following pairs of compounds would you expect to have different physical properties?

(ii) What is the relationship between each of the pairs?

(iii) Assign the absolute configuration of each stereocenter to confirm your answer.

(b)

Are the following pairs identical, enantiomers, diastereomers, or constitutional isomers?

c.

d.