Question 1

Give the major product for the following reaction.

Accepted Answer

The answer of Give the major product for the following...

Question 2

Fill in the empty boxes.

Accepted Answer

The answer of Fill in the empty boxes.  ...

Question 3

What is the major organic product from the following reaction?

Accepted Answer

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

Question 4

What is the major organic product of the following aldol addition?

Accepted Answer

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

Question 5

What is the major organic product of the following reaction?

Accepted Answer

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

Question 6

Give the major product for the following reaction.

Accepted Answer

The answer of Give the major product for the following...

Question 7

Which of the following reagents will quantitatively convert an enolizable ketone to its enolate salt?

Accepted Answer

A) lithium hydroxide 
B) lithium diisopropylamide 
C) methyllithium 
D) diethylamine 
E) pyridine 
A) lithium hydroxide 
B) lithium diisopropylamide 
C) methyllithium 
D) diethylamine 
E) pyridine

Question 8

Which of the following will alkylate a lithium enolate most rapidly?

Accepted Answer

A) methyl bromide 
B) isopropyl bromide 
C) neopentyl bromide 
D) bromobenzene 
E) 2-methylbromobenzene 
A) methyl bromide 
B) isopropyl bromide 
C) neopentyl bromide 
D) bromobenzene 
E) 2-methylbromobenzene

Question 9

Provide the structure of the major organic product that results when 4-methylhexanal is heated in base and undergoes and aldol addition followed by a dehydration.

Accepted Answer

The answer of Provide the structure of the major organic...

Question 10

Provide the major organic product(s)of the reaction shown below.

Accepted Answer

The answer of Provide the major organic product(s)of the reaction...

Question 11

Give the major product for the following reaction.

Accepted Answer

The answer of Give the major product for the following...

Question 12

Provide a detailed,stepwise mechanism for the acid-catalyzed enolization of acetaldehyde.

Accepted Answer

The answer of Provide a detailed,stepwise mechanism for the acid-catalyzed...

Question 13

In the Michael reaction,addition to the α,β-unsaturated carbonyl occurs in a

Accepted Answer

A) 1,2-fashion 
B) 1,3-fashion 
C) 1,4-fashion 
D) 1,5-fashion 
E) Diels-Alder reaction 
A) 1,2-fashion 
B) 1,3-fashion 
C) 1,4-fashion 
D) 1,5-fashion 
E) Diels-Alder reaction

Question 14

What is the carbon nucleophile which attacks molecular bromine in the acid-catalyzed α-bromination of a ketone?

Accepted Answer

A) an enolate 
B) a Grignard reagent 
C) an acetylide 
D) a carbocation 
E) an enol 
A) an enolate 
B) a Grignard reagent 
C) an acetylide 
D) a carbocation 
E) an enol

Question 15

Which of the following molecules cannot generate an enolate?

Accepted Answer

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

Question 16

What two molecules were condensed in an aldol reaction to produce
(CH3)3CCH   CHCOCH3?

Accepted Answer

Question 17

Give the major product for the following reaction.

Accepted Answer

The answer of Give the major product for the following...

Question 18

Give the major product for the following reaction.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 19

Draw the most stable enol tautomer of the ketone shown below.

Accepted Answer

The answer of Draw the most stable enol tautomer of...

Question 20

Rank the following compounds in order of increasing acidity of their a-Hs,least acidic to most acidic: CH3CH2CON(CH3)2,PhCOCH2CHO,CH3CH2CO2CH2CH3,and PhCOCH2CO2CH2CH3.

Accepted Answer

CH₃CH₂CON(CH

Exam 17: Reactions at the Α-Carbon

Give the major product for the following reaction.

Fill in the empty boxes.

What is the major organic product from the following reaction?

What is the major organic product of the following aldol addition?

What is the major organic product of the following reaction?

Give the major product for the following reaction.

Which of the following reagents will quantitatively convert an enolizable ketone to its enolate salt?

Which of the following will alkylate a lithium enolate most rapidly?

Provide the structure of the major organic product that results when 4-methylhexanal is heated in base and undergoes and aldol addition followed by a dehydration.

Provide the major organic product(s)of the reaction shown below.

Give the major product for the following reaction.

Provide a detailed,stepwise mechanism for the acid-catalyzed enolization of acetaldehyde.

In the Michael reaction,addition to the α,β-unsaturated carbonyl occurs in a

What is the carbon nucleophile which attacks molecular bromine in the acid-catalyzed α-bromination of a ketone?

Which of the following molecules cannot generate an enolate?

What two molecules were condensed in an aldol reaction to produce (CH3)3CCH CHCOCH3?

Give the major product for the following reaction.

Give the major product for the following reaction.

Draw the most stable enol tautomer of the ketone shown below.

Rank the following compounds in order of increasing acidity of their a-Hs,least acidic to most acidic: CH3CH2CON(CH3)2,PhCOCH2CHO,CH3CH2CO2CH2CH3,and PhCOCH2CO2CH2CH3.

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

What two molecules were condensed in an aldol reaction to produce (CH₃)₃CCH CHCOCH₃?

Rank the following compounds in order of increasing acidity of their a-Hs,least acidic to most acidic: CH₃CH₂CON(CH₃)₂,PhCOCH₂CHO,CH₃CH₂CO₂CH₂CH₃,and PhCOCH₂CO₂CH₂CH₃.