CEM252 Quiz 5
Name:
Section:
1. Understanding the mechanism illustrated by electron pushing arrows:
1). For each of the reaction arrows (a to f) shown below identify if that reaction step represents
A) a nucleophile attacking an electrophile; B) a leaving group leaving; C) a proton being
transferred. (6 pts)
2). Why is step a necessary? (2 pts)
Provide a more reactive carbonyl
CEM252 Quiz 5
Name:
Section:
2. A compound with two OR (R = alkyl group) groups attached to the same
carbon is known as ______. (2 pts)
A. an acetal
B. a hemiacetal
C. a hydrate
D. none of these
Ans A
3. Which of the following compounds can be best classified as an acetal? (2 pts)
A.
B.
C.
D.
E.
I
II
III
IV
none of these
Ans D
4. Predict the product for the following reaction. (2 pts)
A.
B.
C.
D.
E.
I
II
III
IV
none of these
Ans C
CEM252 Quiz 5
Name:
Section:
5. Predict the product for the following reaction. (2 pts)
A.
B.
C.
D.
E.
I
II
III
IV
V
Ans A
6. Predict the product for the following reactions. (9 pts)
CEM252 Quiz 5
Name:
Section:
1. Understanding the mechanism illustrated by electron pushing arrows:
1). For each of the reaction arrows (a to f) shown below identify if that reaction step represents
A) a nucleophile attacking an electrophile; B) a leaving group leaving; C) a proton being
transferred. (6 pts)
CEM252 Quiz 5
Name:
Section:
2. A compound with an OH and OR (R = alkyl group) groups attached to the
same carbon is known as ______. (1 pt)
A. an acetal
B. a hemiacetal
C. a hydrate
D. none of these
Ans B
Predict the product for the following reaction. (2 pts)
A.
B.
C.
D.
E.
I
II
III
IV
V
Ans A
4. Predict the product for the following reaction. (2 pts)
A.
B.
C.
D.
E.
I
II
III
IV
none of these
Ans C
CEM252 Quiz 5
Name:
Section:
5. Predict the product for the following reactions. (9 pts)
6. Suggest a stepwise synthesis for the following transformation. (5 pts)