Question 1

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 2

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

Accepted Answer

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

Question 3

What is the major product obtained upon addition of Br2 to (R)-4-tert-butylcyclohexene?

Accepted Answer

A)  (1R,2R,4R)-1,2-dibromo-4-tert-butylcyclohexane 
B)  (1S,2R,4R)-1,2-dibromo-4-tert-butylcyclohexane 
C)  (1S,2S,4R)-1,2-dibromo-4-tert-butylcyclohexane 
D)  (1S,2S,4S)-1,2-dibromo-4-tert-butylcyclohexane 
A)  (1R,2R,4R)-1,2-dibromo-4-tert-butylcyclohexane 
B)  (1S,2R,4R)-1,2-dibromo-4-tert-butylcyclohexane 
C)  (1S,2S,4R)-1,2-dibromo-4-tert-butylcyclohexane 
D)  (1S,2S,4S)-1,2-dibromo-4-tert-butylcyclohexane

Question 4

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

Accepted Answer

H₂O, H₂SO₄ or

Question 5

Provide the structure of the key intermediate in the following reaction?

Accepted Answer

The answer of Provide the structure of the key intermediate...

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

Accepted Answer

H₂, transi

Question 8

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 9

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 10

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 11

Provide a neatly drawn mechanism for the following reaction, including curved arrows to show the movement of paris of electrons and the structure of reactive intermediates.   The reaction proceeds in three steps:
1. Protonation of propene to form the 2-propyl cation
2. Nucleophilic addition of bromine to the 2-propyl cation
3. Deprotonation of the oxygen

Accepted Answer

The answer of Provide a neatly drawn mechanism for the...

Question 12

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

Accepted Answer

(i) BH₃; (i

Question 13

Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene?

Accepted Answer

A)  the relative stability of carbocations 
B)  the nucleophilicity of bromide anion 
C)  the acidity of HBr 
D)  the Aufbau principle 
A)  the relative stability of carbocations 
B)  the nucleophilicity of bromide anion 
C)  the acidity of HBr 
D)  the Aufbau principle

Question 14

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 15

What is (are) the major organic product(s) obtained from the following reaction?

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 16

What is the major organic product obtained from the following reaction?
  2 equivalents of

Accepted Answer

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

Question 17

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

Accepted Answer

The answer of What is the best choice of reagent(s)...

Question 18

Which of the following alkenes undergoes the least exothermic hydrogenation upon treatment with H2/Pd?

Accepted Answer

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

Question 19

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 20

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

Accepted Answer

A)  addition of bromine (treatment with Br2) 
B)  hydrogenation (treatment with H2/Pt) 
C)  addition of HBr (treatment with HBr) 
D)  acid-catalyzed hydration (treatment with aqueous H2SO4) 
A)  addition of bromine (treatment with Br2) 
B)  hydrogenation (treatment with H2/Pt) 
C)  addition of HBr (treatment with HBr) 
D)  acid-catalyzed hydration (treatment with aqueous H2SO4)

Exam 6: Reactions of Alkenes

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 product obtained upon addition of Br2 to (R)-4-tert-butylcyclohexene?

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

Provide the structure of the key intermediate in 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?

Which of the following reactions of alkenes is stereospecific?

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?

Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene?

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

What is (are) the major organic product(s) obtained from the following reaction?

What is the major organic product obtained from the following reaction? 2 equivalents of

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

Which of the following alkenes undergoes the least exothermic hydrogenation upon treatment with H2/Pd?

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

Which of the following reactions of alkenes takes place with syn 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

Filters

What is the major product obtained upon addition of Br₂ to (R)-4-tert-butylcyclohexene?

Which of the following alkenes undergoes the least exothermic hydrogenation upon treatment with H₂/Pd?