Question 1

Show how the p orbitals overlap to form the nonbonding π molecular orbital of the allyl system.

Accepted Answer

The answer of Show how the p orbitals overlap to...

Question 2

Which of the following compounds contains the longest carbon-carbon single bond?

Accepted Answer

A) allene 
B) 1, 3-butadiyne 
C) 1, 3-butadiene 
D) propyne 
E) ethane 
A) allene 
B) 1, 3-butadiyne 
C) 1, 3-butadiene 
D) propyne 
E) ethane

Question 3

Which of the following pairs are resonance structures?

Accepted Answer

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

Question 4

Which of the following is an aromatic hydrocarbon?

Accepted Answer

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

Question 5

Provide the structure of the major product which results from 1,4-addition of Br2 to the diene shown below.

Accepted Answer

Question 6

Provide the major organic product.

Accepted Answer

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

Question 7

What diene and dienophile should be used to synthesize the compound below and its enantiomer?

Accepted Answer

The answer of What diene and dienophile should be used...

Question 8

What diene and what dieneophile would be used to synthesize the following compound?

Accepted Answer

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

Question 9

Draw all major resonance contributors of the species below.

Accepted Answer

The answer of Draw all major resonance contributors of the...

Question 10

Provide the structure of indole.

Accepted Answer

The answer of Provide the structure of indole....

Question 11

How many benzylic hydrogens are present in the following molecule?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) zero 
A) 2 
B) 3 
C) 4 
D) 5 
E) zero

Question 12

Which π MOs are bonding MOs in the ground state of 1,3,5-hexatriene?

Accepted Answer

The answer of Which π MOs are bonding MOs in...

Question 13

Draw two other resonance contributors for the following compound:

Accepted Answer

The answer of Draw two other resonance contributors for the...

Question 14

Which of the following terms best describes a Diels-Alder reaction?

Accepted Answer

A) a [4+2] cycloaddition 
B) a [2+2] cycloaddition 
C) a sigmatropic rearrangement 
D) a 1, 3-dipolar cycloaddition 
E) a substitution reaction 
A) a [4+2] cycloaddition 
B) a [2+2] cycloaddition 
C) a sigmatropic rearrangement 
D) a 1, 3-dipolar cycloaddition 
E) a substitution reaction

Question 15

What diene and dienophile would react to give the product below?

Accepted Answer

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

Question 16

Which of the following is aromatic?

Accepted Answer

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

Question 17

Draw the product(s)for the reaction.

Accepted Answer

The answer of Draw the product(s)for the reaction.  ...

Question 18

Identify the most stable carbocation.

Accepted Answer

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

Question 19

Which of the following is a cumulated diene?

Accepted Answer

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

Question 20

What is the major product obtained from the addition of one mole of HCl at high temperature to
1,3-butadiene?

Accepted Answer

1-chloro-2

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

Show how the p orbitals overlap to form the nonbonding π molecular orbital of the allyl system.

Which of the following compounds contains the longest carbon-carbon single bond?

Which of the following pairs are resonance structures?

Which of the following is an aromatic hydrocarbon?

Provide the structure of the major product which results from 1,4-addition of Br2 to the diene shown below.

Provide the major organic product.

What diene and dienophile should be used to synthesize the compound below and its enantiomer?

What diene and what dieneophile would be used to synthesize the following compound?

Draw all major resonance contributors of the species below.

Provide the structure of indole.

How many benzylic hydrogens are present in the following molecule?

Which π MOs are bonding MOs in the ground state of 1,3,5-hexatriene?

Draw two other resonance contributors for the following compound:

Which of the following terms best describes a Diels-Alder reaction?

What diene and dienophile would react to give the product below?

Which of the following is aromatic?

Draw the product(s)for the reaction.

Identify the most stable carbocation.

Which of the following is a cumulated diene?

What is the major product obtained from the addition of one mole of HCl at high temperature to 1,3-butadiene?

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

Provide the structure of the major product which results from 1,4-addition of Br₂ to the diene shown below.