Question 1

What type of carbocation is shown?

Accepted Answer

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

Question 2

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

Accepted Answer

(i) OsO₄; (...

Question 3

What type of reactive intermediate is formed in the reaction of an alkene with HBr to give a bromoalkane?

Accepted Answer

A)  carbocation
B)  carbanion
C)  radical
D)  cyclic bromonium ionE) B) and C)
F) A) and C)

Question 4

Which of the following reactions of alkenes is stereospecific?

Accepted Answer

A)  addition of HCl (treatment with HCl) 
B)  hydrogenation (treatment with H2/Pt) 
C)  addition of HBr (treatment with HBr) 
D)  acid-catalyzed hydration (treatment with aqueous H2SO4) E) B) and C)
F) A) and B)

Question 5

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

Accepted Answer

2 equivale...

Question 6

Br2 in CCl4 can be used to distinguish cyclohexene from cyclohexane.

Accepted Answer

A) True 
 B)False

Question 7

What is (are)  the major organic product(s)  obtained from the following reaction?  1.(R) -3-methyl-2-butanol "2.(S) -3-methyl-2-butanol
3) 2-methyl-2-butanol"

Accepted Answer

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

Question 8

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) C) and D)

Question 9

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) BH3; 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)  BH3; followed by H2O2, NaOH
D)  OsO4; followed by NaHSO3E) None of the above
F) B) and D)

Question 10

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

Accepted Answer

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

Question 11

What is the correct order of stability of the following carbocations (more stable > less stable) ?  less stable) ?   A) 1 > 2 > 3 B) 1 > 3 > 2 C) 3 > 1 > 2 D) 3 > 2 > 1" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

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 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) None of the above
F) A) and D)

Question 16

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 formed by a carbocation experiencing the greatest degree of hyperconjugation stabilization.

Accepted Answer

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

Question 17

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

Question 18

Which of the following reactions of alkenes takes place with anti stereospecificity?

Accepted Answer

A)  bishydroxylation (treatment with OsO4 followed by NaHSO3) 
B)  hydrogenation (treatment with H2/Pt) 
C)  addition of HBr (treatment with HBr) 
D)  bromohydrin formation (treatment with Br2, H2O) E) B) and C)
F) None of the above

Question 19

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

Accepted Answer

(i) BH₃; (i...

Question 20

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)

Exam 6: Reactions of Alkenes

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

Correct AnswerverifiedShow Answer

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

Correct Answerverified(i) BH3; (i...View AnswerShow Answer

What is (are) the major organic product(s) obtained from the following reaction? 1.(R) -3-methyl-2-butanol "2.(S) -3-methyl-2-butanol 3) 2-methyl-2-butanol"

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What type of reactive intermediate is formed in the reaction of an alkene with HBr to give a bromoalkane?

Correct AnswerverifiedShow Answer

What type of carbocation is shown?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Br2 in CCl4 can be used to distinguish cyclohexene from cyclohexane.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answerverified(i) OsO4; (...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

What is the correct order of stability of the following carbocations (more stable > less stable) ?

Correct AnswerverifiedShow Answer

Which of the following reactions of alkenes is stereospecific?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answerverified2 equivale...View AnswerShow Answer

Which of the following reactions of alkenes takes place with anti stereospecificity?

Correct AnswerverifiedShow Answer

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

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 be formed by a carbocation experiencing the greatest degree of hyperconjugation stabilization.

Correct AnswerverifiedShow Answer

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(i) BH₃; (i...
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Br₂in CCl₄ can be used to distinguish cyclohexene from cyclohexane.

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(i) OsO₄; (...
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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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2 equivale...
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