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What is the major organic product of the following reaction? What is the major organic product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) A) and D)

Correct Answer

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What is the thermodynamic product obtained from the addition of 1 equivalent of HBr to 1,3-butadiene?


A) 3-Bromo-1-butene
B) 1-Bromo-2-butene
C) 2-Bromo-2-butene
D) 2-Bromo-1-butene

E) B) and C)
F) A) and C)

Correct Answer

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Which of the following compounds is the most reactive dienophile in a Diels-Alder reaction? Which of the following compounds is the most reactive dienophile in a Diels-Alder reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) B) and D)

Correct Answer

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What is the major organic product of the following reaction? What is the major organic product of the following reaction? A) Only I B) Only II C) Only III D) Only I and II


A) Only I
B) Only II
C) Only III
D) Only I and II

E) A) and B)
F) A) and C)

Correct Answer

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Rank the following dienophile in order of increasing reactivity in a Diels-Alder reaction,listing the least reactive first. Rank the following dienophile in order of increasing reactivity in a Diels-Alder reaction,listing the least reactive first. A) I < II < III B) III < I < II C) II < I < III D) III < II < I


A) I < II < III
B) III < I < II
C) II < I < III
D) III < II < I

E) None of the above
F) B) and C)

Correct Answer

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Which of the following is the least reactive diene in a Diels-Alder reaction? Which of the following is the least reactive diene in a Diels-Alder reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and D)
F) A) and C)

Correct Answer

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Which of the following dienes contain isolated double bonds? Which of the following dienes contain isolated double bonds? A) Only I and II B) Only II and III C) Only I and III D) Only II and IV


A) Only I and II
B) Only II and III
C) Only I and III
D) Only II and IV

E) None of the above
F) All of the above

Correct Answer

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Rank the following dienes in order of decreasing heat of hydrogenation,putting the diene with the highest heat of hydrogenation first. Rank the following dienes in order of decreasing heat of hydrogenation,putting the diene with the highest heat of hydrogenation first. A) I > II > III B) III > II > I C) II > I > III D) III > I > II


A) I > II > III
B) III > II > I
C) II > I > III
D) III > I > II

E) None of the above
F) All of the above

Correct Answer

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Which of the following is an example of a bridged bicyclic system? Which of the following is an example of a bridged bicyclic system? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and C)
F) None of the above

Correct Answer

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What diene and dienophile are used in a Diels-Alder reaction to prepare the following compound? What diene and dienophile are used in a Diels-Alder reaction to prepare the following compound? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) A) and C)

Correct Answer

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Which of the following conjugated dienes represent two conformations? Which of the following conjugated dienes represent two conformations? A) Only I and II B) Only I and III C) Only II and III D) None of the choices


A) Only I and II
B) Only I and III
C) Only II and III
D) None of the choices

E) All of the above
F) B) and C)

Correct Answer

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Which of the following is not a resonance structure of acetic anhydride? Which of the following is not a resonance structure of acetic anhydride? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and D)
F) All of the above

Correct Answer

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Which of the following is not a feature of the Diels-Alder reaction?


A) They are initiated by peroxides.
B) They form new six-membered rings.
C) Three π bonds break.
D) They are concerted.

E) B) and C)
F) A) and D)

Correct Answer

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