Question 1

The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction. 
-Product _____ would have the lowest activation energy required to form the intermediate in the mechanism.

Accepted Answer

The answer of The reaction of methylpropene with HBr in...

Question 2

What is the best choice of reagent(s)  to perform the following transformation? 2O, H2SO4 B) Hg(OAc) 2 and H2O ; followed by NaBH4 C) B2H6; followed by H2O2, NaOH D) OsO4; followed by NaHSO3" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  H2O, H2SO4
B)  Hg(OAc) 2 and H2O ; followed by NaBH4
C)  B2H6; followed by H2O2, NaOH
D)  OsO4; followed by NaHSO3E) C) and D)
F) A) and C)

Question 3

The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction. 
-Product _____would be the major product.

Accepted Answer

The answer of The reaction of methylpropene with HBr in...

Question 4

What is the major organic product obtained from the following reaction?

Accepted Answer

The answer of What is the major organic product obtained...

Question 5

What type of orbitals overlap to provide stability to the tert-butyl carbocation by hyperconjugation?

Accepted Answer

A)  3 ∘\circ∘ C 2p atomic orbital + 3 ∘\circ∘  C sp2 atomic orbital
B)  3 ∘\circ∘ C 2p atomic orbital + methyl C-H   σ\sigmaσ molecular orbital
C)  3 ∘\circ∘  C sp2 atomic orbital + methyl C-H   σ\sigmaσ molecular orbital
D)  3 ∘\circ∘ C 2p atomic orbital + methyl C 2s atomic orbital E) B) and C)
F) B) and D)

Question 6

Upon ozonolysis, _____________ will produce only acetone, (CH3)2C=O. (Enter an IUPAC name.)

Accepted Answer

2,3-dimeth...

Question 7

What is the major organic product obtained from the following reaction?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) B) and C)
F) B) and D)

Question 8

Consider the following reaction sequence.  The product of this sequence is

Accepted Answer

A) True 
 B)False

Question 9

What is the major organic product obtained from the following reaction?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) A) and B)
F) B) and C)

Question 10

Consider the following reaction.  The mechanism for this reaction is shown below.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed hydration (treatment with aqueous H2SO4) ? 2SO4) ?   A) 1 B) 2 C) 3 D) 4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) C) and D)
F) A) and B)

Question 12

What type of reaction mechanism accounts for the reaction of an alkene with aqueous acid to give an alcohol?

Accepted Answer

A)  nucleophilic addition
B)  electrophilic addition
C)  radical addition
D)  eliminationE) B) and C)
F) A) and C)

Question 13

What is (are)  the major organic product(s)  obtained from the following reaction?

Accepted Answer

A)  only 1
B)  only 2
C)  only 3
D)  only 1 and 2E) A) and D)
F) A) and B)

Question 14

Provide the structure of the key intermediate in the following reaction?

Accepted Answer

The answer of Provide the structure of the key intermediate...

Question 15

Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene?

Accepted Answer

A)  the relative stability of carbocations
B)  the nucleophilicity of bromide anion
C)  the acidity of HBr
D)  the aufbau principleE) A) and D)
F) None of the above

Question 16

What type of carbocation is shown?

Accepted Answer

A)  primary
B)  secondary
C)  tertiary
D)  quaternaryE) B) and D)
F) C) and D)

Question 17

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.

Accepted Answer

The reaction proceeds in three...

Question 18

What is the major organic product obtained from the following reaction?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) A) and C)
F) A) and D)

Question 19

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.

Accepted Answer

The reaction proceeds in two s...

Question 20

Which of the following concepts explains why tertiary carbocations are more stable than primary and secondary carbocations?

Accepted Answer

A)  electronegativity
B)  resonance
C)  hyperconjugation
D)  the octet ruleE) B) and C)
F) B) and D)

Exam 6: Reactions of Alkenes

What is the major organic product obtained from the following reaction?

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What type of reaction mechanism accounts for the reaction of an alkene with aqueous acid to give an alcohol?

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What is the major organic product obtained from the following reaction?

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What type of carbocation is shown?

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Consider the following reaction. The mechanism for this reaction is shown below.

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Consider the following reaction sequence. The product of this sequence is

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The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction. -Product _____would be the major product.

Correct AnswerverifiedShow Answer

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.

Correct AnswerverifiedThe reaction proceeds in two s...View AnswerShow Answer

What is the major organic product obtained from the following reaction?

Correct AnswerverifiedShow Answer

Upon ozonolysis, _____________ will produce only acetone, (CH3)2C=O. (Enter an IUPAC name.)

Correct Answerverified2,3-dimeth...View AnswerShow Answer

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of pairs of electrons and the structure of reactive intermediates.

Correct AnswerverifiedThe reaction proceeds in three...View AnswerShow Answer

What is (are) the major organic product(s) obtained from the following reaction?

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What type of orbitals overlap to provide stability to the tert-butyl carbocation by hyperconjugation?

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What is the best choice of reagent(s) to perform the following transformation?

Correct AnswerverifiedShow Answer

The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction. -Product _____ would have the lowest activation energy required to form the intermediate in the mechanism.

Correct AnswerverifiedShow Answer

Which of the following concepts explains why tertiary carbocations are more stable than primary and secondary carbocations?

Correct AnswerverifiedShow Answer

Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene?

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What is the major organic product obtained from the following reaction?

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Provide the structure of the key intermediate in the following reaction?

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Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed hydration (treatment with aqueous H2SO4) ?

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The reaction proceeds in two s...
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Upon ozonolysis, _____________ will produce only acetone, (CH₃)₂C=O. (Enter an IUPAC name.)

Correct Answer
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2,3-dimeth...
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The reaction proceeds in three...
View Answer

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Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed hydration (treatment with aqueous H₂SO₄) ?

Correct Answer
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