Question 1

Provide the reagents necessary to carry out the following conversion.

Accepted Answer

The answer of Provide the reagents necessary to carry out...

Question 2

Predict the major product for the following Diels-Alder reaction.

Accepted Answer

The answer of Predict the major product for the following...

Question 3

Predict the possible major products for the following reaction.

Accepted Answer

The answer of Predict the possible major products for the...

Question 4

Which one of the following represents the highest energy   π\piπ -antibonding molecular orbital of 1,3-butadiene?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV E) A) and B)
F) A) and C)

Question 5

Which diene and dienophile would react to give the following Diels-Alder product?

Accepted Answer

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

Question 6

Predict the major product for the following Diels-Alder reaction.

Accepted Answer

The answer of Predict the major product for the following...

Question 7

What is the correct classification of the following pericyclic reaction?

Accepted Answer

A)   electrophilic addition
B)   sigmatropic rearrangement
C)   cycloaddition
D)   electrocyclic reaction
E)   C & DF) B) and D)
G) All of the above

Question 8

Identify the color of a compound that absorbs yellow light.

Accepted Answer

A)   orange
B)   green
C)   red
D)   blue
E)   violetF) D) and E)
G) A) and C)

Question 9

Compound A is one of the intermediate products in the synthesis of the corticoid hormone cortisone. Provide the structure of compound A.

Accepted Answer

The answer of Compound A is one of the intermediate...

Question 10

What is the correct classification of the following pericyclic reaction?

Accepted Answer

A)   electrophilic addition
B)   sigmatropic rearrangement
C)   cycloaddition
D)   electrocyclic reaction
E)   C & DF) D) and E)
G) A) and B)

Question 11

Which of the following best describes the stereochemistry of ring closure and the product for the following reaction?

Accepted Answer

A)   disrotatory, cis-3,4-diethylcyclobutene
B)   conrotatory, cis-3,4-diethylcyclobutene
C)   disrotatory, trans-3,4-diethylcyclobutene
D)   conrotatory, trans-3,4-diethylcyclobuteneE) All of the above
F) C) and D)

Question 12

Predict the major product for the following Diels-Alder reaction.

Accepted Answer

The answer of Predict the major product for the following...

Question 13

Which one of the following dienophiles is most reactive in the Diels-Alder reaction?

Accepted Answer

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

Question 14

Predict the major product for the following reaction and explain why it is major product.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> This reaction is under thermodynamic co...

Question 15

Which of the following compounds is an isolated diene?

Accepted Answer

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

Question 16

A thermodynamically-controlled reaction will yield :

Accepted Answer

A)   the most stable product.
B)   the product whose formation requires the smallest free energy of activation.
C)   the product that can be formed in the fewest steps.
D)   the product that is formed at the fastest rate.
E)   None of these.F) A) and E)
G) A) and C)

Question 17

Provide the structure for (S,E)-3-t-butyl-4-methyl-1,4-hexadiene.

Accepted Answer

The answer of Provide the structure for (S,E)-3-t-butyl-4-methyl-1,4-hexadiene....

Question 18

Which one of the following dienes is most stable?

Accepted Answer

A)   CH3CH=CHCH=CHCH3
B)   CH3CH=CHCH2CH=CH2
C)   CH2=CHCH2CH2CH=CH2
D)   CH2=CHCH(CH3) CH=CH2
E)   CH3CH=C=CHCH2CH3F) A) and D)
G) C) and E)

Question 19

Predict the product for the following reaction.

Accepted Answer

The answer of Predict the product for the following reaction....

Question 20

Which of the following compounds have conjugated double bonds?

Accepted Answer

The answer of Which of the following compounds have conjugated...

Exam 17: Conjugated Pi Systems and Pericyclic Reactions

A thermodynamically-controlled reaction will yield :

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What is the correct classification of the following pericyclic reaction?

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Which of the following compounds is an isolated diene?

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Predict the major product for the following Diels-Alder reaction.

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Which one of the following dienes is most stable?

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Provide the reagents necessary to carry out the following conversion.

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Predict the major product for the following Diels-Alder reaction.

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Which of the following compounds have conjugated double bonds?

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Predict the possible major products for the following reaction.

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Identify the color of a compound that absorbs yellow light.

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Predict the product for the following reaction.

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Predict the major product for the following reaction and explain why it is major product.

Correct Answerverified This reaction is under thermodynamic co...View AnswerShow Answer

Which diene and dienophile would react to give the following Diels-Alder product?

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Provide the structure for (S,E)-3-t-butyl-4-methyl-1,4-hexadiene.

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Which one of the following dienophiles is most reactive in the Diels-Alder reaction?

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Which of the following best describes the stereochemistry of ring closure and the product for the following reaction?

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Predict the major product for the following Diels-Alder reaction.

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Which one of the following represents the highest energy π\piπ -antibonding molecular orbital of 1,3-butadiene?

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Compound A is one of the intermediate products in the synthesis of the corticoid hormone cortisone. Provide the structure of compound A.

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What is the correct classification of the following pericyclic reaction?

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This reaction is under thermodynamic co...
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Which one of the following represents the highest energy $\pi$ -antibonding molecular orbital of 1,3-butadiene? $Which one of the following represents the highest energy \pi -antibonding molecular orbital of 1,3-butadiene? A) I B) II C) III D) IV$

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