Chem 335 - Winter 2000
Organic Chemistry II
Dr. Carl C. Wamser

Chapter 18 Pre-Quiz

1. A condensation reaction in which the alpha position of one carbonyl compound adds to the carbonyl carbon of a different compound is called

a) a Claisen condensation

b) a Michael addition

c) a crossed aldol condensation

d) a malonic ester synthesis

e) an alpha,beta-unsaturated carbonyl

2. A reaction that proceeds under thermodynamic control

a) requires high temperature

b) gives the most stable product

c) gives the least stable product

d) has the highest activation energy

e) has the lowest activation energy

3. A Claisen condensation produces

a) a carboxylic acid

b) a hydroxy ester

c) a keto ester

d) a hydroxy ketone

e) a diketone

4. An acetoacetic ester synthesis is useful for preparing

a) aldehydes

b) carboxylic acids

c) esters

d) ketones

e) all carboxyl derivatives

5. The enamine of acetaldehyde will act as a nucleophile at

a) N

b) O

c) C-1

d) C-2

e) C-3