Organic Chemistry III
	Professor Carl C. Wamser
	Chapter 21 Pre-Quiz	Chem 336 - Spring 2005

(must be done in WebCT before Mon., April 18, 8:30 am)

1. The appropriate base for a Claisen condensation with ethyl acetate is

a. sodium hydroxide  
* b. sodium ethoxide  
c. ammonia  
d. water  
e. methyl lithium

2. The pKa value for malonic ester is about

a. 3  
b. 8  
* c. 13  
d. 18  
e. 23

3. The malonic ester synthesis could be used to convert benzyl bromide to

a. benzoic acid  
b. phenylacetic acid  
c. 2-phenylethanoic acid  
* d. 3-phenylpropanoic acid  
e. 2-phenylpropanoic acid

4. The enolate of acetoacetic ester could undergo a Michael reaction by adding to

a. cyclohexanone  
b. benzaldehyde  
c. ethyl benzoate  
* d. 2-cyclohexenone  
e. diethyl malonate

5. Seconal is an example of

* a. a barbiturate  
b. a beta-keto ester  
c. an alcohol  
d. an enolate  
e. an ether