Question 1

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

Accepted Answer

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

Question 2

Which of the following dienes can undergo the Diels-Alder reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IV
E)  All of the these

Question 3

Which one of the following represents the HOMO of 1,3,5-hexatriene?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   V

Question 4

Rank the indicted C-C bonds in increasing order of bond length (shortest to longest)

Accepted Answer

A)   III<II<I
B)   II<I<III
C)   I<II<III
D)   I<III<II
E)   II<III<I

Question 5

Use Woodward-Fieser rules to estimate the $\lambda$max for the following compound.

Accepted Answer

The answer of Use Woodward-Fieser rules to estimate the $\lambda$max...

Question 6

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

Accepted Answer

The answer of Which diene and dienophile would react to...

Question 7

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

Accepted Answer

The answer of Which diene and dienophile would react to...

Question 8

Dienes with   π\piπ  bonds separated by two or more  σ\sigmaσ bonds are classified as ______.

Accepted Answer

A)   isolated
B)   cumulated
C)   skipped
D)   conjugated
E)   none of these

Question 9

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

Accepted Answer

The answer of Which diene and dienophile would react to...

Question 10

Rank the following dienes in order of decreasing heat of hydrogenation (highest to lowest).

Accepted Answer

The answer of Rank the following dienes in order of...

Question 11

Which major product(s)  are formed for the following reaction?

Accepted Answer

A)   I & V
B)   II & IV
C)   III & IV
D)   I, III & VI
E)   II, IV & V

Question 12

Which of the following compounds has the longest  λ\lambdaλ max? max?   A)  I B)  II C) III D) IV " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)  III
D)  IV

Question 13

Classify the following compounds as having cumulated, conjugated or isolated double bonds?

Accepted Answer

I. CONJUGATED
II. cu...

Question 14

What is the IUPAC name for the following compound?

Accepted Answer

1-isopropy...

Question 15

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

Accepted Answer

The answer of Which diene and dienophile would react to...

Question 16

The following diene does not undergo Diels Alder reaction because _____.

Accepted Answer

A)   it does not have an electron donating group
B)   it does not have an electron withdrawing group
C)   the bicyclic ring does not function as a diene
D)   it cannot adopt the s-cis conformation
E)   the double bonds are not in the same cyclic ring

Question 17

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

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   V

Question 18

Which of the following compounds is (are)  a cumulated diene(s) ?

Accepted Answer

A)   4-methyl-1,3-heptadiene
B)   3-methyl-1,5-heptadiene
C)   2-methyl-2,4-heptadiene
D)   4-methyl-1,4-heptadiene
E)   5-methyl-2,3-heptadiene

Question 19

Predict the product for the following Claisen rearrangement and provide the curved arrow mechanism for formation of the product.

Accepted Answer

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

Question 20

Predict the possible products for the following reaction and provide a curved arrow mechanism for the formation of these products.

Accepted Answer

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

Exam 17: Conjugated Pi Systems and Pericyclic Reactions

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

Correct AnswerverifiedShow Answer

Which of the following compounds has the longest λ\lambdaλ max?

Correct AnswerverifiedShow Answer

Predict the product for the following Claisen rearrangement and provide the curved arrow mechanism for formation of the product.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Use Woodward-Fieser rules to estimate the λ\lambdaλ max for the following compound.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following compounds is (are) a cumulated diene(s) ?

Correct AnswerverifiedShow Answer

The following diene does not undergo Diels Alder reaction because _____.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which major product(s) are formed for the following reaction?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following dienes can undergo the Diels-Alder reaction?

Correct AnswerverifiedShow Answer

Which one of the following represents the HOMO of 1,3,5-hexatriene?

Correct AnswerverifiedShow Answer

Predict the possible products for the following reaction and provide a curved arrow mechanism for the formation of these products.

Correct AnswerverifiedShow Answer

Rank the following dienes in order of decreasing heat of hydrogenation (highest to lowest).

Correct AnswerverifiedShow Answer

Classify the following compounds as having cumulated, conjugated or isolated double bonds?

Correct AnswerverifiedI. CONJUGATEDII. cu...View AnswerShow Answer

What is the IUPAC name for the following compound?

Correct Answerverified1-isopropy...View AnswerShow Answer

Rank the indicted C-C bonds in increasing order of bond length (shortest to longest)

Correct AnswerverifiedShow Answer

Dienes with π\piπ bonds separated by two or more σ\sigmaσ bonds are classified as ______.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Which of the following compounds has the longest $\lambda$ _max? $Which of the following compounds has the longest \lambda <sub>max</sub>? A) I B) II C) III D) IV$

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Use Woodward-Fieser rules to estimate the $\lambda$ _max for the following compound. $Use Woodward-Fieser rules to estimate the \lambda <sub>max</sub> for the following compound.$

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
I. CONJUGATED
II. cu...
View Answer

Correct Answer
verified
1-isopropy...
View Answer

Correct Answer
verified

Dienes with $\pi$ bonds separated by two or more $\sigma$ bonds are classified as ______.

Correct Answer
verified