Organic Chemistry II
	Professor Carl C. Wamser
Chem 335 - Winter 2005	Chapter 16 Pre-Quiz

(must be done in WebCT before Mon., Feb. 28, 8:30 am)

1. 18-crown-6 has

a. 6 carbons and 6 oxygens  
b. 9 carbons and 6 oxygens  
* c. 12 carbons and 6 oxygens  
d. 18 carbons and 6 oxygens  
e. none of the above

2. Dibenzyl sulfide has the molecular formula

a. C6 H6 S  
b. C7 H8 S  
c. C12 H10 S  
d. C12 H10 S2  
e. C12 H14 S  
* f. C14 H14 S

3. Which of the following would make a good Williamson ether synthesis?

a. sodium phenoxide plus bromobenzene  
b. potassium t-butoxide plus t-butyl bromide  
c. sodium methoxide plus t-butyl bromide  
* d. sodium phenoxide plus benzyl bromide  
e. sodium methoxide plus bromobenzene

4. A Grignard reagent is most likely to attack 2,2-dimethyloxirane at position

a. 1  
b. 2  
* c. 3  
d. 4  
e. 5

5. Ethers are potentially dangerous in the laboratory because they can form explosive hydroperoxides by reaction with

a. acid  
b. hydrogen peroxide  
* c. oxygen  
d. water  
e. alcohols