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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

Correct Answer

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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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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.

Correct Answer

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Which compound could be prepared via Dieckmann condensation? Which compound could be prepared via Dieckmann condensation? 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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-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

Correct Answer

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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.

Correct Answer

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What product(s) is (are) likely to be obtained upon Dieckmann condensation of the following substance? What product(s) is (are) likely to be obtained upon Dieckmann condensation of the following substance? A) I and II B) II and III C) III and IV D) I and III E) II and IV


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

Correct Answer

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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 is not a reversible process?


A) Base-promoted ester hydrolysis
B) Acid-catalyzed ester hydrolysis
C) Aldol addition
D) Claisen condensation
E) Acetal formation

Correct Answer

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The Robinson annulation reaction which produces The Robinson annulation reaction which produces uses which of the following as starting materials? A) I B) II C) III D) IV E) V uses which of the following as starting materials? The Robinson annulation reaction which produces uses which of the following as starting materials? 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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Cyclization reactions,such as the Dieckmann condensation,are best carried out using fairly dilute solutions of the compound to be cyclized.Why is this so?


A) It then is possible to use less base.
B) The reagents generally are expensive.
C) A smaller amount of the compound to be cyclized can be used.
D) Intermolecular condensation is minimized at low concentration.
E) The concentration factor is unimportant.

Correct Answer

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