Organic Chemistry II |
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Professor Carl C. Wamser |
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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