Exam 18: Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

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The pK_a for protons on the carbon between two carbonyls is about 9-11.This greater acidity (as compared to single carbonyl systems)can be accounted for by ______________.

(Essay)

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Question 81

Which of these halides is predicted to alkylate malonic ester (as the anion)in highest yield?

(Multiple Choice)

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Question 82

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

(Multiple Choice)

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Question 83

Which of the following would undergo racemization in base?

(Multiple Choice)

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Question 84

The haloform reaction is an efficient method for converting methyl ketones to ____________.

(Short Answer)

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Question 85

What is the product,Z,of the following reaction sequence?

(Multiple Choice)

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Question 86

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

(Essay)

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Question 87

Which base is employed in the alkylation of methyl hexanoate with ethyl iodide?

(Multiple Choice)

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Question 88

What is the product,Z,of the following reaction sequence?

(Multiple Choice)

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Question 89

Consider the synthesis below.What is compound Z?

(Multiple Choice)

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Question 90

Considering only the highlighted hydrogens,list the following compounds in order of increasing acidity:

(Multiple Choice)

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Question 91

What is the product,L,of the following reaction sequence?

(Multiple Choice)

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Question 92

Which reagent would best serve as the basis for a simple chemical test to distinguish between

(Multiple Choice)

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Question 93

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

(Essay)

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Question 94

What would be the major product of the following reaction?

(Multiple Choice)

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Question 95

What combination of reagents can be used to make the following substance via an enamine?

(Multiple Choice)

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Question 96

Which of the following would provide the best synthesis of 3-ethyl-6-methyl-2-heptanone?

(Multiple Choice)

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Question 97

What would be the major product of the following reaction?

(Multiple Choice)

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Question 98

Considering only the highlighted hydrogens,list the following compounds in order of increasing acidity:

(Multiple Choice)

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Question 99

An unsymmetrical ketone can form two possible enolates.The enolate with the more highly substituted double bond is called the ____________.

(Short Answer)

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Question 100

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Exam 18: Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

The pKa for protons on the carbon between two carbonyls is about 9-11.This greater acidity (as compared to single carbonyl systems)can be accounted for by ______________.

Which of these halides is predicted to alkylate malonic ester (as the anion)in highest yield?

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

Which of the following would undergo racemization in base?

The haloform reaction is an efficient method for converting methyl ketones to ____________.

What is the product,Z,of the following reaction sequence?

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

Which base is employed in the alkylation of methyl hexanoate with ethyl iodide?

What is the product,Z,of the following reaction sequence?

Consider the synthesis below.What is compound Z?

Considering only the highlighted hydrogens,list the following compounds in order of increasing acidity:

What is the product,L,of the following reaction sequence?

Which reagent would best serve as the basis for a simple chemical test to distinguish between

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

What would be the major product of the following reaction?

What combination of reagents can be used to make the following substance via an enamine?

Which of the following would provide the best synthesis of 3-ethyl-6-methyl-2-heptanone?

What would be the major product of the following reaction?

Considering only the highlighted hydrogens,list the following compounds in order of increasing acidity:

An unsymmetrical ketone can form two possible enolates.The enolate with the more highly substituted double bond is called the ____________.

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

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

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

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The pK_a for protons on the carbon between two carbonyls is about 9-11.This greater acidity (as compared to single carbonyl systems)can be accounted for by ______________.