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Which reagents would be used in a Mannich reaction to synthesize Which reagents would be used in a Mannich reaction to synthesize A) I B) II C) III D) IV E) V


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

F) A) and B)
G) All of the above

Correct Answer

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Which of the following would afford the best synthesis of diethyl phenylmalonate, Which of the following would afford the best synthesis of diethyl phenylmalonate, A) B) C) D) E)


A)
Which of the following would afford the best synthesis of diethyl phenylmalonate, A) B) C) D) E)
B)
Which of the following would afford the best synthesis of diethyl phenylmalonate, A) B) C) D) E)
C)
Which of the following would afford the best synthesis of diethyl phenylmalonate, A) B) C) D) E)
D)
Which of the following would afford the best synthesis of diethyl phenylmalonate, A) B) C) D) E)
E)
Which of the following would afford the best synthesis of diethyl phenylmalonate, A) B) C) D) E)

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

Correct Answer

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Which reagents would you use to synthesize this compound by an aldol condensation? Which reagents would you use to synthesize this compound by an aldol condensation? A) B) C) D) E)


A)
Which reagents would you use to synthesize this compound by an aldol condensation? A) B) C) D) E)
B)
Which reagents would you use to synthesize this compound by an aldol condensation? A) B) C) D) E)
C)
Which reagents would you use to synthesize this compound by an aldol condensation? A) B) C) D) E)
D)
Which reagents would you use to synthesize this compound by an aldol condensation? A) B) C) D) E)
E)
Which reagents would you use to synthesize this compound by an aldol condensation? A) B) C) D) E)

F) C) and D)
G) B) and C)

Correct Answer

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


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

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

Correct Answer

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The aldol reaction of cyclohexanone produces which of these self-condensation products? The aldol reaction of cyclohexanone produces which of these self-condensation products? A) I B) II C) III D) IV E) V


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

F) D) and E)
G) All of the above

Correct Answer

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When α\alpha , β\beta -unsaturated aldehydes and ketones react with nucleophiles,simple addition is favored when _________ nucleophiles are used,while conjugate addition is preferred by ___________ nucleophiles.

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Which of these is a product of the reaction of C6H5MgBr with Which of these is a product of the reaction of C<sub>6</sub>H<sub>5</sub>MgBr with A) B) C) D) E)


A)
Which of these is a product of the reaction of C<sub>6</sub>H<sub>5</sub>MgBr with A) B) C) D) E)
B)
Which of these is a product of the reaction of C<sub>6</sub>H<sub>5</sub>MgBr with A) B) C) D) E)
C)
Which of these is a product of the reaction of C<sub>6</sub>H<sub>5</sub>MgBr with A) B) C) D) E)
D)
Which of these is a product of the reaction of C<sub>6</sub>H<sub>5</sub>MgBr with A) B) C) D) E)
E)
Which of these is a product of the reaction of C<sub>6</sub>H<sub>5</sub>MgBr with A) B) C) D) E)

F) C) and D)
G) All of the above

Correct Answer

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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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-Consider the synthesis above in answering this question.What is compound A? A) Butanone B) Butanal C) Propanal D) 1-Butanol E) 2-Methylpropanal -Consider the synthesis above in answering this question.What is compound A?


A) Butanone
B) Butanal
C) Propanal
D) 1-Butanol
E) 2-Methylpropanal

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

Correct Answer

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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 final product is obtained when 2,8-nonanone is treated with base,followed by reaction with sodium borohydride? What final product is obtained when 2,8-nonanone is treated with base,followed by reaction with sodium borohydride? A) I B) II C) III D) IV E) V


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

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

Correct Answer

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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

F) All of the above
G) C) and E)

Correct Answer

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The sequence of a Michael addition followed by an intramolecular aldol condensation is known as a ___________.

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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

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

Correct Answer

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Which is the only one of these compounds which cannot self-condense in the presence of dilute aqueous alkali?


A) Phenylethanal
B) Propanal
C) 2-Methylpropanal
D) 3-Methylpentanal
E) 2,2-Dimethylpropanal

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

Correct Answer

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Esters frequently react in the presence of alkoxides by a reaction called the __________ condensation.

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The reaction of The reaction of with base affords which of these products? A) I B) II C) III D) IV E) V with base affords which of these products? The reaction of with base affords which of these products? A) I B) II C) III D) IV E) V


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

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

Correct Answer

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-What is the intermediate B in the synthesis shown above? A) I B) II C) III D) IV E) V -What is the intermediate B in the synthesis shown above? -What is the intermediate B in the synthesis shown above? A) I B) II C) III D) IV E) V


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

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

Correct Answer

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What product is formed during the following reaction? What product is formed during the following reaction? A) I B) II C) III D) IV E) V


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

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

Correct Answer

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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) B) C) D) E)


A)
What would be the major product of the following reaction? A) B) C) D) E)
B)
What would be the major product of the following reaction? A) B) C) D) E)
C)
What would be the major product of the following reaction? A) B) C) D) E)
D)
What would be the major product of the following reaction? A) B) C) D) E)
E)
What would be the major product of the following reaction? A) B) C) D) E)

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

Correct Answer

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Showing 61 - 80 of 131

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