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

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What would be the major product,B,of the following reaction sequence? What would be the major product,B,of the following reaction sequence? A) I B) II C) III D) IV E) V


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

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


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

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Which compound may be prepared using a Mannich reaction? Which compound may be prepared using a Mannich reaction? A) I B) II C) III D) IV E) V


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

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

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What is the missing reagent? What is the missing reagent? A) B) C) D) E)


A)
What is the missing reagent? A) B) C) D) E)
B)
What is the missing reagent? A) B) C) D) E)
C)
What is the missing reagent? A) B) C) D) E)
D)
What is the missing reagent? A) B) C) D) E)
E)
What is the missing reagent? A) B) C) D) E)

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

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What is the product of the following reaction? What is the product of the following reaction?

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


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

Correct Answer

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Which of these compounds can react with 4-methylhexanal to afford good yields of the crossed aldol product?


A) 3-(4-Nitrophenyl) propanal
B) 2-Methyl-3-pentanone
C) 2-(4-Nitrophenyl) propanal
D) 3-(4-Nitrophenyl) -2-butanone
E) None of the above compounds will give good yields of the crossed aldol product with 4-methylhexanal.

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Explain why diethyl pentanedioate does not undergo a Dieckmann condensation.

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Dieckmann condensation of diethyl pentan...

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

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An aldol reaction that starts with two different carbonyl compounds is called a _______________.

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crossed al...

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Explain why ethyl 2-methylpropanoate does not undergo the usual Claisen condensation.

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In order for Claisen condensation to occ...

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The product,C,of the following sequence of reactions, The product,C,of the following sequence of reactions, would be: A) B) C) D) E) would be:


A)
The product,C,of the following sequence of reactions, would be: A) B) C) D) E)
B)
The product,C,of the following sequence of reactions, would be: A) B) C) D) E)
C)
The product,C,of the following sequence of reactions, would be: A) B) C) D) E)
D)
The product,C,of the following sequence of reactions, would be: A) B) C) D) E)
E)
The product,C,of the following sequence of reactions, would be: A) B) C) D) E)

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What is the product of the Dieckmann-like condensation of this ketoester, What is the product of the Dieckmann-like condensation of this ketoester, A) I B) II C) III D) IV E) V


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

Correct Answer

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Predict the product from the following sequence: Predict the product from the following sequence: A) I B) II C) III D) IV E) V


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

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Why is CH3ONa not used in the Claisen condensation of ethyl acetate?


A) CH3O- is a weaker base than the CH3CH2O- which is used.
B) CH3O-Na+ is more difficult to prepare than CH3CH2O-Na+.
C) CH3O- would abstract a proton from the ethyl group of the ester.
D) Use of CH3O-Na+ would result in transesterification.
E) CH3O-Na+ can be used as well as CH3CH2O-Na+.

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There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide.Draw the structures of all these possible products.Comment on which of these is likely to be the major product,clearly explaining your rationale.

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There are 3 possible products (I-III)tha...

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

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