Organic Chemistry III

Professor Carl C. Wamser

Chem 336 - Spring 2008

Pre-Quiz 25

(must be done in Blackboard before Fri., May 2, 8:30 am)

1. The compound identified by Emil Fischer as D-glyceraldehyde could also be identified as

* a. (R) or (+) or (d)
b. (S) or (+) or (d)
c. (R) or (-) or (d)
d. (S) or (-) or (d)
e. racemic

2. L-Xylulose is an example of

a. an aldohexose
b. an aldopentose
c. a ketohexose
* d. a ketopentose
e. a ketotetrose

3. The anomeric carbon of D-glucopyranose is

* a. C-1
b. C-2
c. C-3
d. C-4
e. C-5
f. C-6

4. Sodium borohydride reduction of glucose gives

a. glucaric acid
b. gluconic acid
* c. sorbitol
d. sucrose
e. high-fructose corn syrup

5. The connections between individual D-glucose units in cellulose are described as

a. alpha(1,4)
* b. beta(1,4)
c. alpha(1,6)
d. beta(1,6)