Question 1

Alkenes are found in ________, which are used by living organisms to trigger specific behavioral responses in other members of the same species.

Accepted Answer

The answer of Alkenes are found in ________, which are...

Question 2

What are the major products for the following reaction sequence?

Accepted Answer

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

Question 3

Which of the following reagents effectively cleaves both the sigma and pi bonds of a carbon-carbon double bond?

Accepted Answer

A)  Cl2/light 
B)    
C)  H2SO4 
D)  cold KMnO4 
E)  1. O3 2. DMS 
A)  Cl2/light 
B)    
C)  H2SO4 
D)  cold KMnO4 
E)  1. O3 2. DMS

Question 4

Of the alkenes shown, which would produce the product shown below, upon treatment with ozone, followed by zinc metal and water?

Accepted Answer

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

Question 5

What is the expected major product of the following reaction sequence?

Accepted Answer

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

Question 6

What is the expected major product of the following reaction sequence?

Accepted Answer

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

Question 7

Describe the products of the reaction below.

Accepted Answer

A)  only one stereoisomer 
B)  an equal mixture of enantiomers 
C)  a roughly equal mixture of diasteromers 
D)  a roughly equal mixture of constitutional isomers 
A)  only one stereoisomer 
B)  an equal mixture of enantiomers 
C)  a roughly equal mixture of diasteromers 
D)  a roughly equal mixture of constitutional isomers

Question 8

Provide the structure(s) of the expected major organic product(s) generated upon completion of the following reaction scheme.

Accepted Answer

The answer of Provide the structure(s) of the expected major...

Question 9

For an addition reaction, why does free energy, $\Delta$G, become more positive with increasing temperature?

Accepted Answer

A)  The positive entropy dominates at high temperature. 
B)  The negative entropy dominates at high temperature. 
C)  The positive enthalpy dominates at high temperature. 
D)  The negative enthalpy dominates at high temperature. 
E)  The enthalpy and entropy cancel at high temperature. 
A)  The positive entropy dominates at high temperature. 
B)  The negative entropy dominates at high temperature. 
C)  The positive enthalpy dominates at high temperature. 
D)  The negative enthalpy dominates at high temperature. 
E)  The enthalpy and entropy cancel at high temperature.

Question 10

Addition of HI to the alkene in the scheme below, results in a significant yield of the product shown. What other product(s) might also be obtained? Explain, with a mechanism and brief discussion, the observation of the given product as well as others that may arise.

Accepted Answer

@#IMG-DLM&_TB4454_00 
Regioselective addition of t

Question 11

Which reaction is not stereospecific?

Accepted Answer

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

Question 12

The reaction of HCl with 2-ethyl-1-pentene or HCl with 3-methyl-2-hexene results in the identical major product of 3-chloro-3-methylhexane. Provide a mechanistic explanation showing the reaction of each alkene with HCl, including the intermediate and product. Provide a brief explanation of how the different alkene reactants could be transformed into the same product.

Accepted Answer

@#IMG-DLM&_TB4454_00 Electrophilic addition of a p

Question 13

What is the expected major product of the following reaction sequence?

Accepted Answer

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

Question 14

What is the expected major 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 15

For the following reaction sequence provide the expected major organic product(s). Include all stereoisomers and clearly show relevant stereochemistry.

Accepted Answer

The answer of For the following reaction sequence provide the...

Question 16

How many moles of hydrogen (H2) are consumed in the catalytic reduction of 1 mole of 1,3-dibromocyclohexa-1,4-diene?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  None of the above 
A)  1 
B)  2 
C)  3 
D)  4 
E)  None of the above

Question 17

When an alkene is subjected to treatment with Hg(OAc)2 in alcohol, followed by reaction with NaBH4, what functional group is formed?

Accepted Answer

A)  ether 
B)  epoxide 
C)  alkane 
D)  syn diol 
E)  alkyne 
A)  ether 
B)  epoxide 
C)  alkane 
D)  syn diol 
E)  alkyne

Question 18

What is the expected major 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 19

Draw Fischer projection(s) of the major product(s) of the reaction between (Z)-2-methyl-3-hexene and cold, alkaline KMnO4.

Accepted Answer

@#IMG-DLM&_TB4454_00 The reaction takes

Question 20

What is the expected major product of the reaction sequence shown below?

Accepted Answer

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

Exam 8: Addition Reactions of Alkenes

Alkenes are found in ________, which are used by living organisms to trigger specific behavioral responses in other members of the same species.

What are the major products for the following reaction sequence?

Which of the following reagents effectively cleaves both the sigma and pi bonds of a carbon-carbon double bond?

Of the alkenes shown, which would produce the product shown below, upon treatment with ozone, followed by zinc metal and water?

What is the expected major product of the following reaction sequence?

What is the expected major product of the following reaction sequence?

Describe the products of the reaction below.

Provide the structure(s) of the expected major organic product(s) generated upon completion of the following reaction scheme.

For an addition reaction, why does free energy, Δ\DeltaΔ G, become more positive with increasing temperature?

Addition of HI to the alkene in the scheme below, results in a significant yield of the product shown. What other product(s) might also be obtained? Explain, with a mechanism and brief discussion, the observation of the given product as well as others that may arise.

Which reaction is not stereospecific?

What is the expected major product of the following reaction sequence?

What is the expected major product for the following reaction?

For the following reaction sequence provide the expected major organic product(s). Include all stereoisomers and clearly show relevant stereochemistry.

How many moles of hydrogen (H2) are consumed in the catalytic reduction of 1 mole of 1,3-dibromocyclohexa-1,4-diene?

When an alkene is subjected to treatment with Hg(OAc)2 in alcohol, followed by reaction with NaBH4, what functional group is formed?

What is the expected major product for the following reaction?

Draw Fischer projection(s) of the major product(s) of the reaction between (Z)-2-methyl-3-hexene and cold, alkaline KMnO4.

What is the expected major product of the reaction sequence shown below?

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

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

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

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

For an addition reaction, why does free energy, $\Delta$ G, become more positive with increasing temperature?

How many moles of hydrogen (H₂) are consumed in the catalytic reduction of 1 mole of 1,3-dibromocyclohexa-1,4-diene?

When an alkene is subjected to treatment with Hg(OAc)₂ in alcohol, followed by reaction with NaBH₄, what functional group is formed?

Draw Fischer projection(s) of the major product(s) of the reaction between (Z)-2-methyl-3-hexene and cold, alkaline KMnO₄.