Question 1

What is the major organic product obtained from the following reaction?

Accepted Answer

2 equivale

Question 2

What is the best choice of reagent(s) to perform the following transformation?

Accepted Answer

A) H2O, H2SO4 
B) Hg(OAc)2 and H2O; followed by NaBH4 
C) BH3; followed by H2O2, NaOH 
D) OsO4; followed by NaHSO3 
A) H2O, H2SO4 
B) Hg(OAc)2 and H2O; followed by NaBH4 
C) BH3; followed by H2O2, NaOH 
D) OsO4; followed by NaHSO3

Question 3

What is the major organic product obtained from the following reaction?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 4

What is the major organic product obtained from the following reaction?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 5

The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction.  
-Product _____ would be formed by a carbocation experiencing the greatest degree of hyperconjugation stabilization.

Accepted Answer

The answer of The reaction of methylpropene with HBr in...

Question 6

What is the major organic product obtained from the following reaction?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 7

What type of carbocation is shown?

Accepted Answer

A) primary 
B) secondary 
C) tertiary 
D) quaternary 
A) primary 
B) secondary 
C) tertiary 
D) quaternary

Question 8

What is the major organic product obtained from the following reaction?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 9

What is the best choice of reagent(s) to perform the following transformation?

Accepted Answer

(i) OsO₄; (

Question 10

What is the correct order of stability of the following carbocations (more stable > less stable)?

Accepted Answer

A) 1 > 2 > 3 
B) 1 > 3 > 2 
C) 3 > 1 > 2 
D) 3 > 2 > 1 
A) 1 > 2 > 3 
B) 1 > 3 > 2 
C) 3 > 1 > 2 
D) 3 > 2 > 1

Question 11

Which of the following reactions of alkenes is stereospecific?

Accepted Answer

A) addition of HCl (treatment with HCl) 
B) hydrogenation (treatment with H2/Pt) 
C) addition of HBr (treatment with HBr) 
D) acid-catalyzed hydration (treatment with aqueous H2SO4) 
A) addition of HCl (treatment with HCl) 
B) hydrogenation (treatment with H2/Pt) 
C) addition of HBr (treatment with HBr) 
D) acid-catalyzed hydration (treatment with aqueous H2SO4)

Question 12

Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed hydration (treatment with aqueous H2SO4)?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 13

What is the major organic product obtained from the following reaction?

Accepted Answer

The answer of What is the major organic product obtained...

Question 14

What is the major organic product obtained from the following reaction?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 15

What is the major organic product obtained from the following reaction?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 16

What is the best choice of reagent(s) to perform the following transformation?

Accepted Answer

(i) BH₃; (i

Question 17

What type of reactive intermediate is formed in the reaction of an alkene with HBr to give a bromoalkane?

Accepted Answer

A) carbocation 
B) carbanion 
C) radical 
D) cyclic bromonium ion 
A) carbocation 
B) carbanion 
C) radical 
D) cyclic bromonium ion

Question 18

What is (are) the major organic product(s) obtained from the following reaction?   1.(R)-3-methyl-2-butanol "2.(S)-3-methyl-2-butanol
3)2-methyl-2-butanol"

Accepted Answer

A) only 1 
B) only 2 
C) only 3 
D) only 1 and 2 
A) only 1 
B) only 2 
C) only 3 
D) only 1 and 2

Question 19

Br2 in CCl4 can be used to distinguish cyclohexene from cyclohexane.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following reactions of alkenes takes place with anti stereospecificity?

Accepted Answer

A) bishydroxylation (treatment with OsO4 followed by NaHSO3) 
B) hydrogenation (treatment with H2/Pt) 
C) addition of HBr (treatment with HBr) 
D) bromohydrin formation (treatment with Br2, H2O) 
A) bishydroxylation (treatment with OsO4 followed by NaHSO3) 
B) hydrogenation (treatment with H2/Pt) 
C) addition of HBr (treatment with HBr) 
D) bromohydrin formation (treatment with Br2, H2O)

Exam 6: Reactions of Alkenes

What is the major organic product obtained from the following reaction?

What is the best choice of reagent(s) to perform the following transformation?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Answer the following question(s) about this reaction. -Product _____ would be formed by a carbocation experiencing the greatest degree of hyperconjugation stabilization.

What is the major organic product obtained from the following reaction?

What type of carbocation is shown?

What is the major organic product obtained from the following reaction?

What is the best choice of reagent(s) to perform the following transformation?

What is the correct order of stability of the following carbocations (more stable > less stable)?

Which of the following reactions of alkenes is stereospecific?

Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed hydration (treatment with aqueous H2SO4)?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

What is the major organic product obtained from the following reaction?

What is the best choice of reagent(s) to perform the following transformation?

What type of reactive intermediate is formed in the reaction of an alkene with HBr to give a bromoalkane?

What is (are) the major organic product(s) obtained from the following reaction? 1.(R)-3-methyl-2-butanol "2.(S)-3-methyl-2-butanol 3)2-methyl-2-butanol"

Br2 in CCl4 can be used to distinguish cyclohexene from cyclohexane.

Which of the following reactions of alkenes takes place with anti stereospecificity?

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids

Organic Polymer Chemistry

Filters

Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed hydration (treatment with aqueous H₂SO₄)?

Br₂in CCl₄ can be used to distinguish cyclohexene from cyclohexane.