Question 1

Draw the mechanism for the following dehydration.

Accepted Answer

The answer of Draw the mechanism for the following dehydration....

Question 2

Which of the following is most reactive in an E1 reaction?

Accepted Answer

A)   
B)   
C)   
A)   
B)   
C)

Question 3

What is (are) the most likely product(s) for the following reaction?

Accepted Answer

The answer of What is (are) the most likely product(s)...

Question 4

Which of the following is the strongest nucleophile?

Accepted Answer

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

Question 5

How many distinct signals would appear in the (proton-decoupled) 13C NMR spectrum for the following compound?

Accepted Answer

A)  4 
B)  5 
C)  6 
D)  8 
A)  4 
B)  5 
C)  6 
D)  8

Question 6

Draw the major product of the following reaction.

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Question 7

For the following dehydration, draw the structure of the intermediate carbocation.

Accepted Answer

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Question 8

Draw the major product of the following reaction.

Accepted Answer

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Question 9

By what mechanism is the following reaction likely to occur?

Accepted Answer

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Question 10

How would you change the following reaction conditions to favor an E2 mechanism?

Accepted Answer

The answer of How would you change the following reaction...

Question 11

Which of the following alkyl halides would be more reactive in an E2 elimination?

Accepted Answer

A)   
B)   
A)   
B)

Question 12

Which of the following is the IUPAC name for the following compound?

Accepted Answer

A)  2-ethyl-1,1,3-trimethylbutene 
B)  3-ethyl-2,4-dimethyl-2-pentene 
C)  2,4-dimethylhexene 
D)  4-ethyl-1,3-dimethyl-3-pentene 
A)  2-ethyl-1,1,3-trimethylbutene 
B)  3-ethyl-2,4-dimethyl-2-pentene 
C)  2,4-dimethylhexene 
D)  4-ethyl-1,3-dimethyl-3-pentene

Question 13

Draw the major product of the following elimination.

Accepted Answer

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

Question 14

Which of the following is the correct mechanism for the elimination reaction of 2-bromo-2,3-dimethylbutane with methoxide?

Accepted Answer

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

Question 15

Which of the following is the correct structure of 2-methyl-1-butene?

Accepted Answer

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

Question 16

What is the product of the following elimination?

Accepted Answer

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Question 17

What is the structure of a rearranged carbocation that does not have a four-membered ring in the following acid-catalyzed dehydration of the following compound?

Accepted Answer

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Question 18

Which of the following is the correct structure of 4-methylcyclopentene?

Accepted Answer

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

Question 19

What is the degree of substitution of the following alkene?

Accepted Answer

A)  Monosubstituted 
B)  Disubstituted 
C)  Trisubstituted 
D)  Tetrasubstituted 
A)  Monosubstituted 
B)  Disubstituted 
C)  Trisubstituted 
D)  Tetrasubstituted

Question 20

Draw the mechanism and product for the following elimination, without using rearrangement.

Accepted Answer

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Exam 8: Alkenes: Structure and Preparation Via Elimination Reactions

Draw the mechanism for the following dehydration.

Which of the following is most reactive in an E1 reaction?

What is (are) the most likely product(s) for the following reaction?

Which of the following is the strongest nucleophile?

How many distinct signals would appear in the (proton-decoupled) 13C NMR spectrum for the following compound?

Draw the major product of the following reaction.

For the following dehydration, draw the structure of the intermediate carbocation.

Draw the major product of the following reaction.

By what mechanism is the following reaction likely to occur?

How would you change the following reaction conditions to favor an E2 mechanism?

Which of the following alkyl halides would be more reactive in an E2 elimination?

Which of the following is the IUPAC name for the following compound?

Draw the major product of the following elimination.

Which of the following is the correct mechanism for the elimination reaction of 2-bromo-2,3-dimethylbutane with methoxide?

Which of the following is the correct structure of 2-methyl-1-butene?

What is the product of the following elimination?

What is the structure of a rearranged carbocation that does not have a four-membered ring in the following acid-catalyzed dehydration of the following compound?

Which of the following is the correct structure of 4-methylcyclopentene?

What is the degree of substitution of the following alkene?

Draw the mechanism and product for the following elimination, without using rearrangement.

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

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Substitution 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

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

How many distinct signals would appear in the (proton-decoupled) ¹³C NMR spectrum for the following compound?