Question 1

Why would the compound below not react with a dienophile in a Diels-Alder reaction?

Accepted Answer

A)   There are no electron withdrawing groups on the compound.
B)   The compound cannot adopt thes-cis conformation.
C)   The compound is not a conjugated diene.
D)   There are no electron donating groups on the compound.E) A) and B)
F) A) and C)

Question 2

Which of the following molecules is a naturally occurring conjugated diene?

Accepted Answer

A)   Acetylene
B)   None of these are correct.
C)   Isoprene
D)   EthyleneE) A) and D)
F) None of the above C

Question 3

What is the major product of the following reaction?

Accepted Answer

A)   IV
B)   I
C)   III
D)   IIE) B) and C)
F) None of the above B

Question 4

Which of the following statements about the Diels-Alder reaction is true?

Accepted Answer

A)   The diene can react only when it adopts thes-trans conformation.
B)   The stereochemistry of the dienophile is retained in the product.
C)   Electron-donating substituents in the dienophile increase the reaction rate.
D)   Electron-withdrawing substituents in the diene increase reaction rate.E) A) and B)
F) C) and D)

Question 5

What is the major product of the following reaction?

Accepted Answer

A)   II
B)   IV
C)   I
D)   IIIE) A) and B)
F) None of the above

Question 6

Which of the following is (are)  conjugated dienes?

Accepted Answer

A)   Only I and II
B)   I, II, and III
C)   Only I
D)   Only IIE) A) and B)
F) C) and D) D

Question 7

What is the major product of the following reaction?

Accepted Answer

A)   II
B)   III
C)   I
D)   IVE) B) and C)
F) A) and B)

Question 8

Which of the following isnot a feature of the Diels-Alder reaction?

Accepted Answer

A)   Three ? bonds break.
B)   They are initiated by peroxides.
C)   They are concerted.
D)   They form new six-membered rings.E) None of the above
F) A) and D)

Question 9

What is the major product of the following reaction?

Accepted Answer

A)   II
B)   III
C)   I
D)   IVE) B) and C)
F) All of the above

Exam 11: Conjugation, Resonance, and Dienes

Why would the compound below not react with a dienophile in a Diels-Alder reaction?

Correct Answer
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Which of the following molecules is a naturally occurring conjugated diene?

Correct Answer
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C

What is the major product of the following reaction?

Correct Answer
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B

Which of the following statements about the Diels-Alder reaction is true?

Correct Answer
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What is the major product of the following reaction?

Correct Answer
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Which of the following is (are) conjugated dienes?

Correct Answer
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D

What is the major product of the following reaction?

Correct Answer
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Which of the following isnot a feature of the Diels-Alder reaction?

Correct Answer
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What is the major product of the following reaction?

Correct Answer
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Exam 11: Conjugation, Resonance, and Dienes

Why would the compound below not react with a dienophile in a Diels-Alder reaction?

Correct AnswerverifiedShow Answer

Which of the following molecules is a naturally occurring conjugated diene?

Correct AnswerverifiedC

What is the major product of the following reaction?

Correct AnswerverifiedB

Which of the following statements about the Diels-Alder reaction is true?

Correct AnswerverifiedShow Answer

What is the major product of the following reaction?

Correct AnswerverifiedShow Answer

Which of the following is (are) conjugated dienes?

Correct AnswerverifiedD

What is the major product of the following reaction?

Correct AnswerverifiedShow Answer

Which of the following isnot a feature of the Diels-Alder reaction?

Correct AnswerverifiedShow Answer

What is the major product of the following reaction?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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C

Correct Answer
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B

Correct Answer
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Correct Answer
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Correct Answer
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D

Correct Answer
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Correct Answer
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Correct Answer
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