Question 1

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

Accepted Answer

@#IMG-DLM&_TB4454_00 This reaction is under thermo

Question 2

Which of the following symbols is used to represent the molar absorptivity of a given compound in the UV-Vis region?

Accepted Answer

A)  ($\lambda$) 
B)  ($\varepsilon$) 
C)  ($v$) 
D)  ($\gamma$) 
E)  ($\alpha$) 
A)  ($\lambda$) 
B)  ($\varepsilon$) 
C)  ($v$) 
D)  ($\gamma$) 
E)  ($\alpha$)

Question 3

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

Accepted Answer

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

Question 4

How many $\pi$ -bonding molecular orbitals does 1,3-pentadiene have?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  none 
A)  1 
B)  2 
C)  3 
D)  4 
E)  none

Question 5

Identify the light-sensitive compound in rods.

Accepted Answer

The answer of Identify the light-sensitive compound in rods....

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 one of the following dienes is least stable?

Accepted Answer

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

Question 8

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 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

Predict the product(s) for the following reaction.

Accepted Answer

The answer of Predict the product(s) for the following reaction....

Question 11

Which of the following compounds has the longest l$\lambda$max?

Accepted Answer

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

Question 12

Identify the pericyclic reaction in which two sigma bonds are broken and two pi bonds are formed.

Accepted Answer

A)  sigmatropic rearrangement 
B)  cycloaddition reaction 
C)  electrolytic reaction 
D)  this is not a pericyclic reaction 
A)  sigmatropic rearrangement 
B)  cycloaddition reaction 
C)  electrolytic reaction 
D)  this is not a pericyclic reaction

Question 13

What is the Cope rearrangement?

Accepted Answer

A)  [2,2] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms 
B)  [2,2] sigmatropic rearrangement with heteroatoms 
C)  [2,3] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms 
D)  [2,3] sigmatropic rearrangement with heteroatoms 
E)  [3,3] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms 
A)  [2,2] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms 
B)  [2,2] sigmatropic rearrangement with heteroatoms 
C)  [2,3] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms 
D)  [2,3] sigmatropic rearrangement with heteroatoms 
E)  [3,3] sigmatropic rearrangement with all atoms of the cyclic transition step are carbon atoms

Question 14

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

Question 15

Predict the product for the following Diels-Alder reaction.

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  None of these

Question 16

Which of the following compounds has the longest $\lambda$max?

Accepted Answer

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

Question 17

Predict the product for the following Cope rearrangement.     
A. I
B. II
C. III
D. IV

Accepted Answer

C
Describe the defining featur

Question 18

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 19

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 20

The polymerization of isoprene to produce synthetic rubber is a special case of ____- addition.

Accepted Answer

The answer of The polymerization of isoprene to produce synthetic...

Exam 16: Conjugated Pi Systems and Pericyclic Reactions

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

Which of the following symbols is used to represent the molar absorptivity of a given compound in the UV-Vis region?

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

How many π\piπ -bonding molecular orbitals does 1,3-pentadiene have?

Identify the light-sensitive compound in rods.

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

Which one of the following dienes is least stable?

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

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

Predict the product(s) for the following reaction.

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

Identify the pericyclic reaction in which two sigma bonds are broken and two pi bonds are formed.

What is the Cope rearrangement?

What is the correct classification of the following pericyclic reaction?

Predict the product for the following Diels-Alder reaction.

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

Predict the product for the following Cope rearrangement. A. I B. II C. III D. IV

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

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

The polymerization of isoprene to produce synthetic rubber is a special case of ____- addition.

A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

How many $\pi$ -bonding molecular orbitals does 1,3-pentadiene have?

Which of the following compounds has the longest l $\lambda$ _max? $Which of the following compounds has the longest l \lambda <sub>max</sub>?$

Which of the following compounds has the longest $\lambda$ _max? $Which of the following compounds has the longest \lambda <sub>max</sub>?$