Question 1

Identify the electrophile in the sulfonation reaction of benzene.

Accepted Answer

A)   SO2+
B)   H2SO4
C)   SO3+
D)   H2SO3
E)   SO3F) All of the above
G) C) and E)

Question 2

Give the preferred products from the nitration of bromobenzene.

Accepted Answer

The answer of Give the preferred products from the nitration...

Question 3

Identify the reagents used to carry out the chlorination of benzene.

Accepted Answer

A)   Cl2/CCl4
B)   Cl2/FeCl3
C)   Cl2/AlCl3
D)   NaCl/Fe
E)   both B and CF) A) and B)
G) B) and C)

Question 4

Provide all resonance structures of the sigma complex when aniline reacts with an electrophile (E+) to yield the para-substituted product.

Accepted Answer

Question 5

Provide the reagents necessary to carry out the following conversion.

Accepted Answer

1. CH₃CH₂Cl/...

Question 6

The electrophilic bromination or chlorination of benzene requires ______ along with the halogen.

Accepted Answer

A)   UV light
B)   a Brønsted base
C)   a Lewis base
D)   a Lewis acid
E)   none of theseF) A) and C)
G) C) and D)

Question 7

Which one of the following compounds will be least reactive towards a Friedel-Crafts reaction?

Accepted Answer

A)   nitrobenzene
B)   anisole
C)   phenol
D)   benzene
E)   chlorobenzeneF) B) and D)
G) C) and D)

Question 8

List the three steps involved in an electrophilic aromatic substitution reaction.

Accepted Answer

1. Formation of an electrophil...

Question 9

Aryl and vinyl halides cannot be used in the Friedel-Crafts alkylation reaction, because they do not __________.

Accepted Answer

form stabl...

Question 10

Provide the structures of the major intermediate and products in the following reaction sequence.

Accepted Answer

The answer of Provide the structures of the major intermediate...

Question 11

Predict the major product for the following reaction.

Accepted Answer

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

Question 12

Which one of the following substituents will direct the incoming group to the meta position during electrophilic aromatic substitution?

Accepted Answer

A)   -NO2
B)   -C ≡\equiv≡ N
C)   -CCl3
D)   -COOH
E)   all of these F) None of the above
G) A) and B)

Question 13

Provide the structures of the major resonance contributors when nitrobenzene reacts with an electrophile in electrophilic aromatic substitution at the meta position.

Accepted Answer

The answer of Provide the structures of the major resonance...

Question 14

Which one of the following substituents will not direct the incoming group to the meta position during electrophilic aromatic substitution?

Accepted Answer

A)   -NO2
B)   -C ≡\equiv≡ N
C)   -OCH3
D)   -COOH
E)   all of these F) A) and B)
G) A) and C)

Question 15

Provide the reagent(s) necessary to carry out the following conversion.

Accepted Answer

The answer of Provide the reagent(s) necessary to carry out...

Question 16

Which one of the following compounds does not undergo a Friedel-Crafts reaction?

Accepted Answer

A)   benzene
B)   chlorobenzene
C)   nitrobenzene
D)   toluene
E)   t-butylbenzeneF) A) and E)
G) B) and C)

Question 17

In a Clemmensen reduction, an aryl ketone is reduced to _____________.

Accepted Answer

A)   an aryl aldehyde
B)   an aryl alkane
C)   an aryl carboxylic acid
D)   an aryl ester
E)   an aryl anhydrideF) A) and C)
G) C) and D)

Question 18

Which one of the following compounds would be least reactive toward electrophilic aromatic substitution?

Accepted Answer

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

Question 19

Predict the major product for the following reaction.

Accepted Answer

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

Question 20

Identify the rate-determining step in the electrophilic aromatic substitution of benzene.

Accepted Answer

A)   Formation of an electrophile
B)   Formation of a sigma complex.
C)   Loss of a proton from the sigma complex.
D)   Addition of an electrophile & loss of a proton
E)   None of theseF) B) and D)
G) B) and C)

Exam 18: Aromatic Substitution Reactions

Provide the structures of the major resonance contributors when nitrobenzene reacts with an electrophile in electrophilic aromatic substitution at the meta position.

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List the three steps involved in an electrophilic aromatic substitution reaction.

Correct Answerverified1. Formation of an electrophil...View AnswerShow Answer

Provide all resonance structures of the sigma complex when aniline reacts with an electrophile (E+) to yield the para-substituted product.

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Identify the reagents used to carry out the chlorination of benzene.

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Predict the major product for the following reaction.

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Give the preferred products from the nitration of bromobenzene.

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Predict the major product for the following reaction.

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The electrophilic bromination or chlorination of benzene requires ______ along with the halogen.

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Identify the rate-determining step in the electrophilic aromatic substitution of benzene.

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Identify the electrophile in the sulfonation reaction of benzene.

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Which one of the following compounds does not undergo a Friedel-Crafts reaction?

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Which one of the following compounds will be least reactive towards a Friedel-Crafts reaction?

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Provide the reagent(s) necessary to carry out the following conversion.

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In a Clemmensen reduction, an aryl ketone is reduced to _____________.

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Which one of the following compounds would be least reactive toward electrophilic aromatic substitution?

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Which one of the following substituents will direct the incoming group to the meta position during electrophilic aromatic substitution?

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Provide the reagents necessary to carry out the following conversion.

Correct Answerverified1. CH3CH2Cl/...View AnswerShow Answer

Provide the structures of the major intermediate and products in the following reaction sequence.

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Aryl and vinyl halides cannot be used in the Friedel-Crafts alkylation reaction, because they do not __________.

Correct Answerverifiedform stabl...View AnswerShow Answer

Which one of the following substituents will not direct the incoming group to the meta position during electrophilic aromatic substitution?

Correct AnswerverifiedShow Answer

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1. Formation of an electrophil...
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Provide all resonance structures of the sigma complex when aniline reacts with an electrophile (E⁺) to yield the para-substituted product.

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1. CH₃CH₂Cl/...
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form stabl...
View Answer

Correct Answer
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