5. Chirality

Name the following:

a.

b.

A student decided that the configuration of the asymmetric centers in a sugar such as D-glucose could be determined rapidly by simply assigning the R configuration to an symmetric center with an OH group on the right and the S configuration to an symmetric center with an OH group on the left. Is he correct?

What is the configuration of the following compounds? (Use the given structures to answer the question.)

a. ($-$)-glyceric acid

b. ($+$)-isoserine

What is the configuration of the following compounds? (Use the given structures to answer the question.)

c. ($+$)-lactic acid

What is the configuration of each of the asymmetric centers in the following compounds?

a.

b.

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

c.

d.

What is the configuration about each of the asymmetric centers in aspartame?

Draw a perspective formula for each of the following:

a. (S)-3-chloro-1-pentanol

b. (2R,3R)-2,3-dibromopentane

Assign the absolute stereochemistry for each of the following molecules drawn in their Fischer projection.

(a)