Question 1

Provide the structure of the major organic product(s)in the reaction below.

Accepted Answer

The answer of Provide the structure of the major organic...

Question 2

What is/are the product(s)from the following reaction?

Accepted Answer

A) II Minor, III Major 
B) II Major, III Minor 
C) III only 
D) I and II 
E) II and III 
A) II Minor, III Major 
B) II Major, III Minor 
C) III only 
D) I and II 
E) II and III

Question 3

Cyclopentadiene can react with itself in a Diels-Alder reaction. Draw the endo and exo products.

Accepted Answer

The answer of Cyclopentadiene can react with itself in a...

Question 4

What is the thermodynamic product for the following reaction?

Accepted Answer

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

Question 5

Which of the following is the most stable resonance contributor to acetic acid?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 6

Identify the most stable carbocation.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 7

Which of the following statements about benzene is correct?

Accepted Answer

A) All of the carbon atoms are sp3 hybridized. 
B) It has no delocalized electrons. 
C) The carbon-carbon bond length is longer than that of ethane. 
D) It is a planar molecule. 
E) The carbon-hydrogen bonds are not the same length. 
A) All of the carbon atoms are sp3 hybridized. 
B) It has no delocalized electrons. 
C) The carbon-carbon bond length is longer than that of ethane. 
D) It is a planar molecule. 
E) The carbon-hydrogen bonds are not the same length.

Question 8

Draw the structure of the major product which results when the diene shown is treated with HBr at -80°C.

Accepted Answer

The answer of Draw the structure of the major product...

Question 9

What is/are the product(s)from the following reaction?

Accepted Answer

A) I only 
B) II only 
C) I is minor, II is major 
D) I is major, II is minor 
E) equal amounts of I and II 
A) I only 
B) II only 
C) I is minor, II is major 
D) I is major, II is minor 
E) equal amounts of I and II

Question 10

Give the major organic product for the reaction.

Accepted Answer

A)    
B)    
C)    
D)    
E) no reaction 
A)    
B)    
C)    
D)    
E) no reaction

Question 11

Why does the (E,E)-isomer of 2,4-hexadiene react much more rapidly with dienophiles than does the (Z,Z)-isomer?

Accepted Answer

The s-cis conformation, which

Question 12

What descriptive term is applied to the type of diene represented by 1, 5-octadiene?

Accepted Answer

A) conjugated diene 
B) cumulated diene 
C) isolated diene 
D) alkynyl diene 
E) none of the above 
A) conjugated diene 
B) cumulated diene 
C) isolated diene 
D) alkynyl diene 
E) none of the above

Question 13

What descriptive term is applied to the type of diene represented by 2,4-hexadiene?

Accepted Answer

A) conjugated diene 
B) cumulated diene 
C) isolated diene 
D) alkynyl diene 
E) none of the above 
A) conjugated diene 
B) cumulated diene 
C) isolated diene 
D) alkynyl diene 
E) none of the above

Question 14

Stabilization of a charged species usually happens when this species can be more accurately depicted as a hybrid of several resonance contributing forms. Why is this the case?

Accepted Answer

Stabilization result

Question 15

Which of the following is the most stable cation?

Accepted Answer

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

Question 16

Does the following structures represent different compounds or resonance contributors?

Accepted Answer

They are r

Question 17

Draw the arrows to go from one resonance structure to another.

Accepted Answer

The answer of Draw the arrows to go from one...

Question 18

Which of the following is the strongest acid?

Accepted Answer

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

Question 19

Draw the major product of the reaction.

Accepted Answer

@#IMG-DLM&_TB1830_00

Question 20

Which of the following conjugated dienes would not react with a dieneophile in a Diels-Alder reaction?

Accepted Answer

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

Exam 8: Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Provide the structure of the major organic product(s)in the reaction below.

What is/are the product(s)from the following reaction?

Cyclopentadiene can react with itself in a Diels-Alder reaction. Draw the endo and exo products.

What is the thermodynamic product for the following reaction?

Which of the following is the most stable resonance contributor to acetic acid?

Identify the most stable carbocation.

Which of the following statements about benzene is correct?

Draw the structure of the major product which results when the diene shown is treated with HBr at -80°C.

What is/are the product(s)from the following reaction?

Give the major organic product for the reaction.

Why does the (E,E)-isomer of 2,4-hexadiene react much more rapidly with dienophiles than does the (Z,Z)-isomer?

What descriptive term is applied to the type of diene represented by 1, 5-octadiene?

What descriptive term is applied to the type of diene represented by 2,4-hexadiene?

Stabilization of a charged species usually happens when this species can be more accurately depicted as a hybrid of several resonance contributing forms. Why is this the case?

Which of the following is the most stable cation?

Does the following structures represent different compounds or resonance contributors?

Draw the arrows to go from one resonance structure to another.

Which of the following is the strongest acid?

Draw the major product of the reaction.

Which of the following conjugated dienes would not react with a dieneophile in a Diels-Alder reaction?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

Reactions of Alkenes

Reactions of Alkynes Introduction to Multistep Synthesis

Substitution Reactions of Alkyl Halides

Elimination Reactions of Alkyl Halides Competition Between Substitution and Elimination

Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

Organometallic Compounds

Reactions of Alkanes, Radicals

Mass Spectrometry, Infrared Spectroscopy, and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

More About Amines Heterocylic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Catalysis

The Organic Mechanisms of the Coenzymes

The Chemistry of Metabolism

Nucleosides, Nucleotides, and Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters