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Give the major product for the following reaction. Give the major product for the following reaction.

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Provide a detailed, stepwise mechanism for the α-bromination of acetone in base.

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An enolate attacks an aldehyde and the resulting product is subsequently protonated. What type of reaction is this?


A) a Fischer esterification
B) an acid-catalyzed aldol condensation
C) a base-mediated aldol condensation
D) a Hell-Volhard-Zelinsky reaction
E) a Selman-Jones reaction

F) B) and E)
G) A) and B)

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

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What is the major organic product of the following reaction? What is the major organic product of the following reaction? A) I B) II C) III D) IV E) V What is the major organic product of the following reaction? A) I B) II C) III D) IV E) V


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

F) A) and D)
G) A) and E)

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Which of the following underlined alpha hydrogens are the most acidic?


A) Which of the following underlined alpha hydrogens are the most acidic? A) B) C) D) E)
B) Which of the following underlined alpha hydrogens are the most acidic? A) B) C) D) E)
C) Which of the following underlined alpha hydrogens are the most acidic? A) B) C) D) E)
D) Which of the following underlined alpha hydrogens are the most acidic? A) B) C) D) E)
E) Which of the following underlined alpha hydrogens are the most acidic? A) B) C) D) E)

F) None of the above
G) A) and B)

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Provide the structure of the alkyl bromide that is needed to prepare 6-methyl-2-heptanone using the acetoacetic ester synthesis.

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Give the major product for the following reaction. Give the major product for the following reaction. A) B) C) D) E) no reaction


A) Give the major product for the following reaction. A) B) C) D) E) no reaction
B) Give the major product for the following reaction. A) B) C) D) E) no reaction
C) Give the major product for the following reaction. A) B) C) D) E) no reaction
D) Give the major product for the following reaction. A) B) C) D) E) no reaction
E) no reaction

F) A) and B)
G) A) and C)

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Provide the major organic product of the following. Provide the major organic product of the following.

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In theory a poorly planned crossed aldol reaction can produce how many different aldol regioisomers?


A) 1
B) 2
C) 3
D) 4
E) 5

F) A) and B)
G) C) and E)

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Give the major product for the following reaction. Give the major product for the following reaction.

Correct Answer

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What is the major product of the following condensation? What is the major product of the following condensation? A) I B) II C) III D) IV E) V What is the major product of the following condensation? A) I B) II C) III D) IV E) V


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

F) A) and D)
G) A) and E)

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Give the major product for the reaction. Give the major product for the reaction. A) B) C) D) E)


A) Give the major product for the reaction. A) B) C) D) E)
B) Give the major product for the reaction. A) B) C) D) E)
C) Give the major product for the reaction. A) B) C) D) E)
D) Give the major product for the reaction. A) B) C) D) E)
E) Give the major product for the reaction. A) B) C) D) E)

F) B) and E)
G) B) and C)

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Give the major product for the following reaction. Give the major product for the following reaction.

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Which of the following compounds does not have an alpha hydrogen? Which of the following compounds does not have an alpha hydrogen? A) I B) II C) III D) IV E) all of the above


A) I
B) II
C) III
D) IV
E) all of the above

F) A) and C)
G) C) and E)

Correct Answer

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Give the major product for the following reaction. Give the major product for the following reaction. A) B) C) D) E)


A) Give the major product for the following reaction. A) B) C) D) E)
B) Give the major product for the following reaction. A) B) C) D) E)
C) Give the major product for the following reaction. A) B) C) D) E)
D) Give the major product for the following reaction. A) B) C) D) E)
E) Give the major product for the following reaction. A) B) C) D) E)

F) C) and D)
G) A) and E)

Correct Answer

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Enolates are frequently formed by treating an aldehyde or ketone with LDA. However, the LDA must first be generated by reacting diisopropylamine with butyllithium. Why don't chemists just use butyllithium itself to deprotonate the aldehyde or ketone and form the enolate?

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Butyllithium is a strong enough base but...

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

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

Correct Answer

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a) The base-catalyzed reaction of 1 mole of acetone with 2 moles of benzaldehyde yields a yellow solid, C17H14O. What is the structure of the product? b) What will be the result when only 1 mole of benzaldehyde is added? c) What will be the result when acetone is not added at all? d) What will be the result when benzaldehyde is not added at all? e) Why is the self-condensation of acetone unlikely in the presence of benzaldehyde?

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a) This is an aldol addition. blured image_TB1830_00...

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Showing 41 - 60 of 113

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