Organic Chemistry III

Professor Carl C. Wamser

Chapter 21 Pre-Quiz

(must be done in WebCT before Wed., April 21, 8:30 am)

1. The most acidic hydrogen in methyl hexanoate is located on carbon number

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

2. The Dieckmann cyclization produces a cyclic

a. alcohol  
b. aldehyde  
* c. ketone  
d. carboxylic acid  
e. lactone

3. Acetoacetic ester is the common name for

a. ethyl 2-oxoacetate  
b. ethyl 2-oxopropanoate  
c. ethyl 3-oxopropanoate  
d. ethyl 2-oxobutanoate  
* e. ethyl 3-oxobutanoate

4. A base strong enough to completely convert an ester to its enolate anion is

a. sodium hydroxide  
b. sodium ethoxide  
c. lithium ethoxide  
* d. lithium diisopropylamide  
e. diisopropylamine

5. A mixed Claisen condensation refers to a reaction between an ester enolate and

a. barbituric acid  
b. an alpha,beta-unsaturated ketone  
* c. another ester  
d. an acid anhydride  
e. sodium ethoxide