Question 1

What is the expected major product of the following reaction?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) None of the above
G) A) and E)

Question 2

What is the expected major product for the following reaction?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) B) and D)
G) A) and E)

Question 3

Which statement best describes the temperature dependence of an addition reaction?

Accepted Answer

A)   Addition reactions are thermodynamically favored at all temperatures.
B)   Addition reactions are thermodynamically disfavored at all temperatures.
C)   Addition reactions are thermodynamically favored at low temperatures.
D)   Addition reactions are thermodynamically favored at high temperatures.
E)   Addition reactions are thermodynamically impossible.F) A) and B)
G) All of the above

Question 4

Draw Fischer projections of the major product of the reaction between (Z)?2?methyl-3-hexene and aqueous Br2.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30">_TB4454_00 The reaction takes place with...

Question 5

What is the major product for the following reaction?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) C) and E)
G) A) and B)

Question 6

Which of the following alkenes will yield a meso dihalide when reacted with Br2/CCl4 at room temperature? 2/CCl4 at room temperature?   A)  I B)  II C)  III D)  IV E)  Both II and IV" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   Both II and IVF) D) and E)
G) A) and B) B

Question 7

Provide the expected major organic product of the reaction sequence shown.

Accepted Answer

A)   I and II
B)   IV and V
C)   I only
D)   II only
E)   III onlyF) A) and D)
G) C) and D)

Question 8

Which of the following alkene addition reactions occur(s)  specifically in an anti fashion?

Accepted Answer

A)   hydroboration-oxidation
B)   addition of Br2
C)   addition of H2
D)   addition of H2O in dilute acid
E)   both A and BF) C) and E)
G) B) and E)

Question 9

An unknown alkene was reacted with MCPBA in dichloromethane, followed by work-up with H2O/H+. A racemic mixture of the compound shown below was obtained. What is correct name of the starting alkene? 2O/H+. A racemic mixture of the compound shown below was obtained. What is correct name of the starting alkene?   A)  (Z) -3-methylpent-2-ene B)  (E) -3-methylpent-2-ene C)  2-methylpent-2-ene D)  2,3-dimethylbut-2-ene E)  none of the above" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   (Z) -3-methylpent-2-ene
B)   (
E)  -3-methylpent-2-ene
C)   2-methylpent-2-ene
D)   2,3-dimethylbut-2-ene
E)   none of the aboveF) C) and D)
G) None of the above

Question 10

Which alkene would yield 3-methylpentane upon subjection to catalytic hydrogenation?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) A) and B)
G) A) and E)

Question 11

Identify the best reagents to accomplish a Markovnikov addition of water to an unsymmetrical alkene with minimal skeletal rearrangement.

Accepted Answer

A)   water and dilute acid
B)   water and concentrated acid
C)   1. Hg(OAc) 2, H2O 2. NaBH4, NaOH
D)   1. BH3•THF 2. H2O2, NaOH
E)   1. OsO4, pyridine 2. NaHSO3, H2OF) A) and D)
G) None of the above C

Question 12

What is the expected major product for the following reaction sequence?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) A) and B)
G) D) and E)

Question 13

What is the expected major product resulting from treatment of (E) -3-methyl-3-hexene with Br2 in the presence of methanol, CH3OH? 2 in the presence of methanol, CH3OH?   A)  I B)  II C)  III D)  IV E)  All of the above are produced in equal amounts" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   All of the above are produced in equal amountsF) C) and E)
G) A) and D)

Question 14

How many distinct signals would appear in the (proton-decoupled)  13C NMR spectrum for the product of the following reaction? 13C NMR spectrum for the product of the following reaction?   A)  3 B)  4 C)  5 D)  6" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   3
B)   4
C)   5
D)   6E) None of the above
F) A) and B)

Question 15

Identify Wilkinson's catalyst.

Accepted Answer

A)   (Ph3P) 3RhCl
B)   (Ph3P) 3RhBr
C)   (Ph3P) 3PbCl
D)   (Ph3P) 3PbBrl
E)   (Ph3P) 3RuClF) A) and B)
G) B) and C)

Question 16

The rule that correctly predicts the regiochemistry of most ionic additions to alkenes is named after which chemist?

Accepted Answer

Vladimir M...

Question 17

What is the expected major product resulting from the acid-catalyzed hydration of 2,5-dimethyl-2-hexene?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) A) and B)
G) A) and E)

Question 18

What is the expected major product for the following reaction?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) A) and B)
G) A) and C)

Question 19

Identify the expected major product of the following reaction.

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) A) and C)
G) A) and E) C

Question 20

What are the expected major product(s)  of HBr addition to the alkene shown below?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   VF) C) and D)
G) B) and E)

Exam 8: Addition Reactions of Alkenes

What is the expected major product of the following reaction?

Correct AnswerverifiedShow Answer

What is the expected major product for the following reaction?

Correct AnswerverifiedShow Answer

Which statement best describes the temperature dependence of an addition reaction?

Correct AnswerverifiedShow Answer

Draw Fischer projections of the major product of the reaction between (Z)?2?methyl-3-hexene and aqueous Br2.

Correct Answerverified_TB4454_00 The reaction takes place with...View AnswerShow Answer

What is the major product for the following reaction?

Correct AnswerverifiedShow Answer

Which of the following alkenes will yield a meso dihalide when reacted with Br2/CCl4 at room temperature?

Correct AnswerverifiedB

Provide the expected major organic product of the reaction sequence shown.

Correct AnswerverifiedShow Answer

Which of the following alkene addition reactions occur(s) specifically in an anti fashion?

Correct AnswerverifiedShow Answer

An unknown alkene was reacted with MCPBA in dichloromethane, followed by work-up with H2O/H+. A racemic mixture of the compound shown below was obtained. What is correct name of the starting alkene?

Correct AnswerverifiedShow Answer

Which alkene would yield 3-methylpentane upon subjection to catalytic hydrogenation?

Correct AnswerverifiedShow Answer

Identify the best reagents to accomplish a Markovnikov addition of water to an unsymmetrical alkene with minimal skeletal rearrangement.

Correct AnswerverifiedC

What is the expected major product for the following reaction sequence?

Correct AnswerverifiedShow Answer

What is the expected major product resulting from treatment of (E) -3-methyl-3-hexene with Br2 in the presence of methanol, CH3OH?

Correct AnswerverifiedShow Answer

How many distinct signals would appear in the (proton-decoupled) 13C NMR spectrum for the product of the following reaction?

Correct AnswerverifiedShow Answer

Identify Wilkinson's catalyst.

Correct AnswerverifiedShow Answer

The rule that correctly predicts the regiochemistry of most ionic additions to alkenes is named after which chemist?

Correct AnswerverifiedVladimir M...View AnswerShow Answer

What is the expected major product resulting from the acid-catalyzed hydration of 2,5-dimethyl-2-hexene?

Correct AnswerverifiedShow Answer

What is the expected major product for the following reaction?

Correct AnswerverifiedShow Answer

Identify the expected major product of the following reaction.

Correct AnswerverifiedC

What are the expected major product(s) of HBr addition to the alkene shown below?

Correct AnswerverifiedShow Answer

Correct Answer
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Draw Fischer projections of the major product of the reaction between (Z)?2?methyl-3-hexene and aqueous Br₂.

Correct Answer
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_TB4454_00 The reaction takes place with...
View Answer

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Which of the following alkenes will yield a meso dihalide when reacted with Br₂/CCl₄ at room temperature?

Correct Answer
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B

Correct Answer
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An unknown alkene was reacted with MCPBA in dichloromethane, followed by work-up with H₂O/H⁺. A racemic mixture of the compound shown below was obtained. What is correct name of the starting alkene?

Correct Answer
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Correct Answer
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C

Correct Answer
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What is the expected major product resulting from treatment of (E) -3-methyl-3-hexene with Br₂ in the presence of methanol, CH₃OH?

Correct Answer
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How many distinct signals would appear in the (proton-decoupled) ¹³C NMR spectrum for the product of the following reaction?

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Vladimir M...
View Answer

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C

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