Question 1

What is the general name for the class of products formed in an Aldol condensation reaction?

Accepted Answer

A) b,g-Unsaturated carbonyl compound 
B) a,b-Unsaturated carbonyl compound 
C) a,g-Unsaturated carbonyl compound 
D) b-Hydroxy carbonyl compound 
A) b,g-Unsaturated carbonyl compound 
B) a,b-Unsaturated carbonyl compound 
C) a,g-Unsaturated carbonyl compound 
D) b-Hydroxy carbonyl compound

Question 2

In the correct order,what are the three steps in the mechanism of an Aldol reaction?

Accepted Answer

A) Protonation,enolate formation,nucleophilic addition 
B) Enolate formation,protonation,nucleophilic addition 
C) Enolate formation,nucleophilic addition,protonation 
D) Nucleophilic addition,enolate formation,protonation 
A) Protonation,enolate formation,nucleophilic addition 
B) Enolate formation,protonation,nucleophilic addition 
C) Enolate formation,nucleophilic addition,protonation 
D) Nucleophilic addition,enolate formation,protonation

Question 3

There are several variations of the Aldol reaction.Which of the following types of reactants leads to only one possible product with the Aldol condensation reaction?

Accepted Answer

A) Two different aldehydes with a-hydrogens are able to form a single aldol condensation product. 
B) Two different ketones with a-hydrogens are able to form a single aldol condensation product. 
C) Any aldehyde and ketone mixed together can react to form a single condensation product. 
D) Any pair of aldehyde or ketone reactants where one of the reactants has no a-hydrogens will lead to a single aldol product. 
A) Two different aldehydes with a-hydrogens are able to form a single aldol condensation product. 
B) Two different ketones with a-hydrogens are able to form a single aldol condensation product. 
C) Any aldehyde and ketone mixed together can react to form a single condensation product. 
D) Any pair of aldehyde or ketone reactants where one of the reactants has no a-hydrogens will lead to a single aldol product.

Question 4

The following reaction is an example of what type of reaction?

Accepted Answer

A) Michael reaction 
B) Aldol self-condensation 
C) Dieckmann condensation 
D) Robinson annulation 
A) Michael reaction 
B) Aldol self-condensation 
C) Dieckmann condensation 
D) Robinson annulation

Question 5

What reaction type is a Claisen reaction?

Accepted Answer

A) Electrophilic addition 
B) Electrophilic substitution 
C) Nucleophilic addition 
D) Nucleophilic substitution 
A) Electrophilic addition 
B) Electrophilic substitution 
C) Nucleophilic addition 
D) Nucleophilic substitution

Question 6

What is the name given to the Claisen reaction between two different esters?

Accepted Answer

A) Multiple Claisen reaction 
B) Differential Claisen reaction 
C) Crossed Claisen reaction 
D) Versatile Claisen reaction 
A) Multiple Claisen reaction 
B) Differential Claisen reaction 
C) Crossed Claisen reaction 
D) Versatile Claisen reaction

Question 7

Of the carbonyl compounds; (1)benzaldehyde,(2)acetophenone and (3)dicyclohexyl ketone,which compound has noa-hydrogens?

Accepted Answer

A) Benzaldehyde 
B) Acetophenone 
C) Acetone 
D) All of these compounds contain a-hydrogens. 
A) Benzaldehyde 
B) Acetophenone 
C) Acetone 
D) All of these compounds contain a-hydrogens.

Question 8

Which of the following carbonyl compounds will undergo Aldol addition reactions when treated with aqueous sodium hydroxide?

Accepted Answer

A) I 
B) II 
C) III 
D) None of the choices 
A) I 
B) II 
C) III 
D) None of the choices

Question 9

What are the names for the two parts of the mechanism in a Robinson annulation?

Accepted Answer

A) Michael addition and intramolecular Claisen reaction 
B) Michael addition and intramolecular aldol reaction 
C) Claisen reaction and intramolecular aldol reaction 
D) Aldol reaction and intramolecular Claisen reaction 
A) Michael addition and intramolecular Claisen reaction 
B) Michael addition and intramolecular aldol reaction 
C) Claisen reaction and intramolecular aldol reaction 
D) Aldol reaction and intramolecular Claisen reaction

Question 10

What are the two starting materials for a Robinson annulation?

Accepted Answer

A) an a,b-Unsaturated carbonyl compound and an enolate 
B) a b-Ketoester and an enolate 
C) a 1,5-Dicarbonyl compound and an enolate 
D) a 1,3-Dicarbonyl compound and an enolate 
A) an a,b-Unsaturated carbonyl compound and an enolate 
B) a b-Ketoester and an enolate 
C) a 1,5-Dicarbonyl compound and an enolate 
D) a 1,3-Dicarbonyl compound and an enolate

Question 11

What is an intramolecular Claisen reaction called?

Accepted Answer

A) Michael reaction 
B) Robinson reaction 
C) Hoffman reaction 
D) Dieckmann reaction 
A) Michael reaction 
B) Robinson reaction 
C) Hoffman reaction 
D) Dieckmann reaction

Exam 22: Carbonyl Condensation Reactions

What is the general name for the class of products formed in an Aldol condensation reaction?

In the correct order,what are the three steps in the mechanism of an Aldol reaction?

There are several variations of the Aldol reaction.Which of the following types of reactants leads to only one possible product with the Aldol condensation reaction?

The following reaction is an example of what type of reaction?

What reaction type is a Claisen reaction?

What is the name given to the Claisen reaction between two different esters?

Of the carbonyl compounds; (1)benzaldehyde,(2)acetophenone and (3)dicyclohexyl ketone,which compound has noa-hydrogens?

Which of the following carbonyl compounds will undergo Aldol addition reactions when treated with aqueous sodium hydroxide?

What are the names for the two parts of the mechanism in a Robinson annulation?

What are the two starting materials for a Robinson annulation?

What is an intramolecular Claisen reaction called?

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols,ethers,and Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation, resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives - Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

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