Klein, Organic Chemistry 3eChapter 211. Which one of the following compounds is most acidic?A. ethyl acetoacetateB. 2-butanoneC. ethyl pentanoateD. 1-butanolE. 3-pentanoneAnswer: ALearning Objective: 21.1 Write a mechanism for the acid- or base-catalyzedtautomerization of an aldehyde or ketone, and describe the conditions required for theformation of an enolateDifficulty: Medium2. How many alpha h
...[Show More]
Klein, Organic Chemistry 3e
Chapter 21
1. Which one of the following compounds is most acidic?
A. ethyl acetoacetate
B. 2-butanone
C. ethyl pentanoate
D. 1-butanol
E. 3-pentanone
Answer: A
Learning Objective: 21.1 Write a mechanism for the acid- or base-catalyzed
tautomerization of an aldehyde or ketone, and describe the conditions required for the
formation of an enolate
Difficulty: Medium
2. How many alpha hydrogens are in 2-pentanone?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: E
Learning Objective: 21.1 Write a mechanism for the acid- or base-catalyzed
tautomerization of an aldehyde or ketone, and describe the conditions required for the
formation of an enolate
Difficulty: Easy
3. How many beta hydrogens are in 2-pentanone?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: B
Learning Objective: 21.1 Write a mechanism for the acid- or base-catalyzed
tautomerization of an aldehyde or ketone, and describe the conditions required for the
formation of an enolate
Difficulty: Easy
4. How many gamma hydrogens are in 2-pentanone?
A. 1
B. 2
C. 3
D. 4
E. 5
Answer: C
Learning Objective: 21.1 Write a mechanism for the acid- or base-catalyzed
tautomerization of an aldehyde or ketone, and describe the conditions required for the
formation of an enolate
Difficulty: Easy
5. Which of the following indicated -hydrogens is most acidic?
A. I
B. II
C. III
D. IV
E. V
Answer: B
Learning Objective: 21.1 Write a mechanism for the acid- or base-catalyzed
tautomerization of an aldehyde or ketone, and describe the conditions required for the
formation of an enolate
Difficulty: Medium
6. Which is the most acidic hydrogen in the following compound?
A. I
B. II
C. III
D. IV
E. V
Answer: A
Learning Objective: 21.1 Write a mechanism for the acid- or base-catalyzed
tautomerization of an aldehyde or ketone, and describe the conditions required for the
formation of an enolate
Difficulty: Medium
7. Which is the most acidic hydrogen in the following compound?
[Show Less]