Question 1

What product(s)is (are)likely to be obtained upon Dieckmann condensation of the following substance?

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 2

-What is the intermediate B in the synthesis shown above?

Accepted Answer

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

Question 3

What is the final product of the following reaction sequence? Give structural
details of all significant intermediates.

Accepted Answer

The answer of What is the final product of the...

Question 4

Which compound could be prepared via Dieckmann condensation?

Accepted Answer

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

Question 5

The Robinson annulation reaction which produces   uses which of the following as starting materials?

Accepted Answer

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

Question 6

Suggest a reasonable synthetic strategy to carry out the following transformation.

Accepted Answer

The answer of Suggest a reasonable synthetic strategy to carry...

Question 7

What would be the major product,B,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 8

What starting compound(s)would you use in an aldol reaction to prepare as the major product:

Accepted Answer

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

Question 9

What starting compound(s)would you use in an aldol reaction to prepare as the major product:

Accepted Answer

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

Question 10

Cyclization reactions,such as the Dieckmann condensation,are best carried out using fairly dilute solutions of the compound to be cyclized.Why is this so?

Accepted Answer

A)  It then is possible to use less base. 
B)  The reagents generally are expensive. 
C)  A smaller amount of the compound to be cyclized can be used. 
D)  Intermolecular condensation is minimized at low concentration. 
E)  The concentration factor is unimportant. 
A)  It then is possible to use less base. 
B)  The reagents generally are expensive. 
C)  A smaller amount of the compound to be cyclized can be used. 
D)  Intermolecular condensation is minimized at low concentration. 
E)  The concentration factor is unimportant.

Question 11

Which of these is not a reversible process?

Accepted Answer

A)  Base-promoted ester hydrolysis 
B)  Acid-catalyzed ester hydrolysis 
C)  Aldol addition 
D)  Claisen condensation 
E)  Acetal formation 
A)  Base-promoted ester hydrolysis 
B)  Acid-catalyzed ester hydrolysis 
C)  Aldol addition 
D)  Claisen condensation 
E)  Acetal formation

What product(s)is (are)likely to be obtained upon Dieckmann condensation of the following substance?

-What is the intermediate B in the synthesis shown above?

What is the final product of the following reaction sequence? Give structural details of all significant intermediates.

Which compound could be prepared via Dieckmann condensation?

The Robinson annulation reaction which produces uses which of the following as starting materials?

Suggest a reasonable synthetic strategy to carry out the following transformation.

What would be the major product,B,of the following reaction sequence?

What starting compound(s)would you use in an aldol reaction to prepare as the major product:

What starting compound(s)would you use in an aldol reaction to prepare as the major product:

Cyclization reactions,such as the Dieckmann condensation,are best carried out using fairly dilute solutions of the compound to be cyclized.Why is this so?

Which of these is not a reversible process?

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

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Exam 19: Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

What product(s)is (are)likely to be obtained upon Dieckmann condensation of the following substance?

-What is the intermediate B in the synthesis shown above?

What is the final product of the following reaction sequence? Give structural details of all significant intermediates.

Which compound could be prepared via Dieckmann condensation?

The Robinson annulation reaction which produces uses which of the following as starting materials?

Suggest a reasonable synthetic strategy to carry out the following transformation.

What would be the major product,B,of the following reaction sequence?

What starting compound(s)would you use in an aldol reaction to prepare as the major product:

What starting compound(s)would you use in an aldol reaction to prepare as the major product:

Cyclization reactions,such as the Dieckmann condensation,are best carried out using fairly dilute solutions of the compound to be cyclized.Why is this so?

Which of these is not a reversible process?

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters