Question 1

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

Accepted Answer

A)  2,3-dimethyl-3-heptanol 
B)  2,4-dimethyl-4-heptanol 
C)  2,5-dimethyl-4-heptanol 
D)  2,5-dimethyl-3-heptanol 
A)  2,3-dimethyl-3-heptanol 
B)  2,4-dimethyl-4-heptanol 
C)  2,5-dimethyl-4-heptanol 
D)  2,5-dimethyl-3-heptanol C

Question 2

What is the major organic product obtained from the following sequence of reactions?

Accepted Answer

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

Question 3

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

Accepted Answer

A)  1-butene 
B)  2-butene 
C)  2-methylpropene 
D)  2-methyl-1-propanol 
A)  1-butene 
B)  2-butene 
C)  2-methylpropene 
D)  2-methyl-1-propanol C

Question 4

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

Accepted Answer

A)  2-methypentane 
B)  4-methyl-2-pentanol 
C)  4-methyl-1-pentene 
D)  (
E)  4-methyl-2-pentene 
A)  2-methypentane 
B)  4-methyl-2-pentanol 
C)  4-methyl-1-pentene 
D)  (
E)  4-methyl-2-pentene

Question 5

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

Accepted Answer

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

Question 6

Which of the following is the best description of the overall transformation involved in a Wittig reaction?

Accepted Answer

A)  addition 
B)  substitution 
C)  elimination 
D)  rearrangement 
A)  addition 
B)  substitution 
C)  elimination 
D)  rearrangement

Question 7

Which of the following statements is not true?

Accepted Answer

A)  The carbon atom of a carbonyl group is electrophilic 
B)  In general, aldehydes are more electrophilic than ketones 
C)  Nucleophilic addition to carbonyl groups can be catalyzed by acid or base 
D)  Addition of a nucleophile to a carbonyl group changes the hybridization of the carbonyl carbon from sp3 to sp2 hybridization 
A)  The carbon atom of a carbonyl group is electrophilic 
B)  In general, aldehydes are more electrophilic than ketones 
C)  Nucleophilic addition to carbonyl groups can be catalyzed by acid or base 
D)  Addition of a nucleophile to a carbonyl group changes the hybridization of the carbonyl carbon from sp3 to sp2 hybridization

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

Which combination(s) of alkyl bromide and carbonyl compound can be used to prepare the following product by addition of the Grignard reagent derived from the alkyl bromide to the carbonyl compound?

Accepted Answer

A)  only 1 and 2 
B)  only 3 and 4 
C)  only 2 and 3 
D)  only 1, 2 and 3 
A)  only 1 and 2 
B)  only 3 and 4 
C)  only 2 and 3 
D)  only 1, 2 and 3

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

Which of the following is the best description of the mechanism of the reaction between a ketone and an amine to form an imine?

Accepted Answer

A)  concerted bimolecular substitution 
B)  nucleophilic addition followed by elimination 
C)  elimination followed by nucleophilic addition 
D)  electrophilic addition followed by rearrangement 
A)  concerted bimolecular substitution 
B)  nucleophilic addition followed by elimination 
C)  elimination followed by nucleophilic addition 
D)  electrophilic addition followed by rearrangement

Question 12

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

Accepted Answer

A)  2-pentanone 
B)  (
E) -3-penten-2-ol 
C)  2-pentanol 
D)  4-hydroxy-2-pentanone 
A)  2-pentanone 
B)  (
E) -3-penten-2-ol 
C)  2-pentanol 
D)  4-hydroxy-2-pentanone

Question 13

Which of the following is not true about the Wittig reaction?

Accepted Answer

A)  triphenylphosphine reacts with 2$\degree$ alkyl bromides by an SN2 reaction to give an alkyltriphenylphosphonium bromide 
B)  alkyltriphenylphosphonium bromides are deprotonated by strong bases to give a phosphonium ylide 
C)  phosphonium ylids are nucleophilic 
D)  the product of the Wittig reaction is an alkyne 
A)  triphenylphosphine reacts with 2$\degree$ alkyl bromides by an SN2 reaction to give an alkyltriphenylphosphonium bromide 
B)  alkyltriphenylphosphonium bromides are deprotonated by strong bases to give a phosphonium ylide 
C)  phosphonium ylids are nucleophilic 
D)  the product of the Wittig reaction is an alkyne

Question 14

Which ketone-diol undergoes cyclization to form the following acetal?

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)  2-pentanol 
B)  pentane 
C)  1-pentene 
D)  (
E)  2-pentene 
A)  2-pentanol 
B)  pentane 
C)  1-pentene 
D)  (
E)  2-pentene

Question 16

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 17

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

Accepted Answer

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

Question 18

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 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

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

Accepted Answer

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

Exam 16: Aldehydes and Ketones

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

What is the major organic product obtained from the following sequence of reactions?

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?

Which of the following is the best description of the overall transformation involved in a Wittig reaction?

Which of the following statements is not true?

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

Which combination(s) of alkyl bromide and carbonyl compound can be used to prepare the following product by addition of the Grignard reagent derived from the alkyl bromide to the carbonyl compound?

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

Which of the following is the best description of the mechanism of the reaction between a ketone and an amine to form an imine?

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

Which of the following is not true about the Wittig reaction?

Which ketone-diol undergoes cyclization to form the following acetal?

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 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?

Covalent Bonding and Shapes of Molecules

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

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

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