Question 1

What is the major product for the following reaction?

Accepted Answer

A)    
B)    
C)    
D) All of these choices are major products. 
E) A mixture of two of these choices. 
A)    
B)    
C)    
D) All of these choices are major products. 
E) A mixture of two of these choices. E

Question 2

What is the major product of the following reaction?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of these choices. 
A)    
B)    
C)    
D)    
E) None of these choices. A

Question 3

Carbenes are frequently produced by $\alpha$-elimination reactions.These are reactions in which the proton being lost and the leaving group are ___.

Accepted Answer

both attached to the same carbon

Question 4

What is the major product for the following reaction?

Accepted Answer

A)    
B)    
C)    
D)    
E) More than one of these choices. 
A)    
B)    
C)    
D)    
E) More than one of these choices.

Question 5

What is the major product for the following reaction?

Accepted Answer

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

Question 6

What is the major product for the following reaction?

Accepted Answer

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

Question 7

In general,when the addition of an unsymmetrical electrophilic reagent to an unsymmetrical alkene forms the product predicted by Markovnikov's rule,that occurs because:

Accepted Answer

A) the product is statistically favored. 
B) steric hindrance favors its formation. 
C) it is formed via the more/most stable carbocation. 
D) it is the more/most stable product. 
E) All of these choices are reasons. 
A) the product is statistically favored. 
B) steric hindrance favors its formation. 
C) it is formed via the more/most stable carbocation. 
D) it is the more/most stable product. 
E) All of these choices are reasons.

Question 8

Potassium permanganate is usually a preferred reagent for oxidative cleavage to form aldehyde,as it is a much milder and less toxic reagent than osmium tetroxide.

Accepted Answer

A) True 
 B)False

Question 9

What is the major product for the following reaction?

Accepted Answer

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

Question 10

Which reagent(s)given below could be used to synthesize cis-1,2-cycloheptanediol from cycloheptene?

Accepted Answer

A) KMnO4,OH-0,5oC 
B) KMnO4,H3O+,75oC 
C) H2SO4,heat 
D) All of these choices. 
E) None of these choices. 
A) KMnO4,OH-0,5oC 
B) KMnO4,H3O+,75oC 
C) H2SO4,heat 
D) All of these choices. 
E) None of these choices.

Question 11

Due to the formation of a mercurinium ion in hydration of an alkene using oxymercuration-demercuration,we see overall anti-product form making this reaction stereospecific.

Accepted Answer

A) True 
 B)False

Question 12

What is the major product for the following reaction?

Accepted Answer

A)    
B)    
C)    
D)    
E) More than one of these choices. 
A)    
B)    
C)    
D)    
E) More than one of these choices.

Question 13

Which alkene would yield only CH3CH2COOH on oxidation with hot alkaline potassium permanganate (followed by acid work-up)?

Accepted Answer

A) (
E) -2-hexene 
B) (Z)-2-hexene 
C) 2-methyl-2-pentene 
D) (
E) -3-hexene 
E) (
E) -4-methyl-2-pentene 
A) (
E) -2-hexene 
B) (Z)-2-hexene 
C) 2-methyl-2-pentene 
D) (
E) -3-hexene 
E) (
E) -4-methyl-2-pentene

Question 14

What is the major product for the following reaction?

Accepted Answer

A)    
B)    
C)    
D)    
E) More than one of these choices. 
A)    
B)    
C)    
D)    
E) More than one of these choices.

Question 15

What is the major product for the following reaction?

Accepted Answer

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

Question 16

How many compounds are possible from the addition of bromine to CH2=CHCH2CH3 (counting stereoisomers separately)?

Accepted Answer

A) One 
B) Two 
C) Three 
D) Four 
E) Five 
A) One 
B) Two 
C) Three 
D) Four 
E) Five

Question 17

An unknown compound X was subjected to ozonolysis and was found to the following products.Determine which of the following compounds listed below could be the unknown X?

Accepted Answer

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

Question 18

Select the structure of the major product formed in 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 19

Select the structure of the major product formed in 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 20

What is the major product of the following reaction sequence?

Accepted Answer

A)    
B)    
C)    
D)    
E) None of these choices. 
A)    
B)    
C)    
D)    
E) None of these choices.

Exam 8: Alkenes and Alkynes II

What is the major product for the following reaction?

What is the major product of the following reaction?

Carbenes are frequently produced by α\alphaα -elimination reactions.These are reactions in which the proton being lost and the leaving group are ___.

What is the major product for the following reaction?

What is the major product for the following reaction?

What is the major product for the following reaction?

In general,when the addition of an unsymmetrical electrophilic reagent to an unsymmetrical alkene forms the product predicted by Markovnikov's rule,that occurs because:

Potassium permanganate is usually a preferred reagent for oxidative cleavage to form aldehyde,as it is a much milder and less toxic reagent than osmium tetroxide.

What is the major product for the following reaction?

Which reagent(s)given below could be used to synthesize cis-1,2-cycloheptanediol from cycloheptene?

Due to the formation of a mercurinium ion in hydration of an alkene using oxymercuration-demercuration,we see overall anti-product form making this reaction stereospecific.

What is the major product for the following reaction?

Which alkene would yield only CH3CH2COOH on oxidation with hot alkaline potassium permanganate (followed by acid work-up)?

What is the major product for the following reaction?

What is the major product for the following reaction?

How many compounds are possible from the addition of bromine to CH2=CHCH2CH3 (counting stereoisomers separately)?

An unknown compound X was subjected to ozonolysis and was found to the following products.Determine which of the following compounds listed below could be the unknown X?

Select the structure of the major product formed in the following reaction.

Select the structure of the major product formed in the following reaction.

What is the major product of the following reaction sequence?

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes I

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Carbenes are frequently produced by $\alpha$ -elimination reactions.These are reactions in which the proton being lost and the leaving group are ___.

Which alkene would yield only CH₃CH₂COOH on oxidation with hot alkaline potassium permanganate (followed by acid work-up)?

How many compounds are possible from the addition of bromine to CH₂=CHCH₂CH₃ (counting stereoisomers separately)?