Question 1

Do you expect pyridine to undergo electrophilic substitution reactions? Give an example.

Accepted Answer

Pyridine is very unreactive towards elec

Question 2

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

Accepted Answer

The answer of Provide the major organic product(s)of the reaction...

Question 3

What is the major product of 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 4

Circle the stronger base in the pair below, and briefly explain your choice.

Accepted Answer

Pyrrolidine is the s

Question 5

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

Accepted Answer

The answer of Provide the major organic product(s)of the reaction...

Question 6

Give the major product for the following reaction.

Accepted Answer

A) CH3CH2NH2 
B) CH3CH2CH2NH2 
C) CH3CH2CH2NHNH2 
D) CH3CH2CH2N   NH 
E) CH3CH2CH2CH2NH2 
A) CH3CH2NH2 
B) CH3CH2CH2NH2 
C) CH3CH2CH2NHNH2 
D) CH3CH2CH2N   NH 
E) CH3CH2CH2CH2NH2

Question 7

What is the major alkene formed in the following Hofmann elimination?

Accepted Answer

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

Question 8

What is the major product of 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 9

Give the major product for the following reaction.

Accepted Answer

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

Question 10

Give the major product for the following reaction.

Accepted Answer

A) CH3CH2NH2 
B) CH3CH2CH2NH2 
C) CH3CH2CH2NHNH2 
D) CH3CH2CH2N   NH 
E) CH3CH2CH2CH2NH2 
A) CH3CH2NH2 
B) CH3CH2CH2NH2 
C) CH3CH2CH2NHNH2 
D) CH3CH2CH2N   NH 
E) CH3CH2CH2CH2NH2

Question 11

Circle the stronger base in the pair below, and briefly explain your choice.

Accepted Answer

Cyclohexylamine is the stronge

Question 12

What is the major product of 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 13

Provide the systematic name for the compound below.

Accepted Answer

The answer of Provide the systematic name for the compound...

Question 14

An unknown compound has the formula C8H10OS, and is known to contain a thiophene ring. The proton NMR spectrum of this compound is: δ0.98, triplet, 3H
Δ1)74, multiplet, 2H
Δ2)80, triplet, 2H
Δ7)04, multiplet, 1H
Δ7)55, multiplet, 2H
What is the structure of this unknown?

Accepted Answer

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

Question 15

Provide the structure of the major organic product in the reaction below.

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

Which of the following statements correctly describes the behavior of heterocycles in aromatic substitution reactions?

Accepted Answer

A) Pyridine N-oxide is considerably more reactive toward electrophilic aromatic substitution reactions than pyridine because the oxygen atom can donate electrons into the ring by resonance. 
B) Pyridine N-oxide undergoes electrophilic aromatic substitution primarily at C-3. 
C) Pyridine is less reactive than benzene toward nucleophilic aromatic substitution. 
D) Nucleophilic aromatic substitution of pyridine takes place at C-3 because attack at this position leads to the most stable intermediate. 
E) none of the above 
A) Pyridine N-oxide is considerably more reactive toward electrophilic aromatic substitution reactions than pyridine because the oxygen atom can donate electrons into the ring by resonance. 
B) Pyridine N-oxide undergoes electrophilic aromatic substitution primarily at C-3. 
C) Pyridine is less reactive than benzene toward nucleophilic aromatic substitution. 
D) Nucleophilic aromatic substitution of pyridine takes place at C-3 because attack at this position leads to the most stable intermediate. 
E) none of the above

Question 18

Give all organic products for the following reaction.

Accepted Answer

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

Question 19

Provide the structure of the major organic product in the reaction below.

Accepted Answer

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

Question 20

Provide the structure of the major organic product in the reaction below.

Accepted Answer

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

Exam 20: More About Amines Heterocylic Compounds

Do you expect pyridine to undergo electrophilic substitution reactions? Give an example.

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

What is the major product of the following reaction?

Circle the stronger base in the pair below, and briefly explain your choice.

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

Give the major product for the following reaction.

What is the major alkene formed in the following Hofmann elimination?

What is the major product of the following reaction?

Give the major product for the following reaction.

Give the major product for the following reaction.

Circle the stronger base in the pair below, and briefly explain your choice.

What is the major product of the following reaction?

Provide the systematic name for the compound below.

An unknown compound has the formula C8H10OS, and is known to contain a thiophene ring. The proton NMR spectrum of this compound is: δ0.98, triplet, 3H Δ1)74, multiplet, 2H Δ2)80, triplet, 2H Δ7)04, multiplet, 1H Δ7)55, multiplet, 2H What is the structure of this unknown?

Provide the structure of the major organic product in the reaction below.

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

Which of the following statements correctly describes the behavior of heterocycles in aromatic substitution reactions?

Give all organic products for the following reaction.

Provide the structure of the major organic product in the reaction below.

Provide the structure of the major organic product in the reaction below.

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

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

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

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

An unknown compound has the formula C₈H₁₀OS, and is known to contain a thiophene ring. The proton NMR spectrum of this compound is: δ0.98, triplet, 3H Δ1)74, multiplet, 2H Δ2)80, triplet, 2H Δ7)04, multiplet, 1H Δ7)55, multiplet, 2H What is the structure of this unknown?