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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4


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

E) None of the above
F) All of the above

Correct Answer

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Which of the following is the best description of the mechanism of the reaction between a ketone and an amine to form an imine?


A) concerted bimolecular substitution
B) nucleophilic addition followed by elimination
C) elimination followed by nucleophilic addition
D) electrophilic addition followed by rearrangement

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

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 2,3-dimethyl-3-heptanol B) 2,4-dimethyl-4-heptanol C) 2,5-dimethyl-4-heptanol D) 2,5-dimethyl-3-heptanol


A) 2,3-dimethyl-3-heptanol
B) 2,4-dimethyl-4-heptanol
C) 2,5-dimethyl-4-heptanol
D) 2,5-dimethyl-3-heptanol

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

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C

What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 2-methypentane B) 4-methyl-2-pentanol C) 4-methyl-1-pentene D) (E) 4-methyl-2-pentene


A) 2-methypentane
B) 4-methyl-2-pentanol
C) 4-methyl-1-pentene
D) (E) 4-methyl-2-pentene

E) A) and B)
F) B) and D)

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 2-pentanone B) (E) -3-penten-2-ol C) 2-pentanol D) 4-hydroxy-2-pentanone


A) 2-pentanone
B) (E) -3-penten-2-ol
C) 2-pentanol
D) 4-hydroxy-2-pentanone

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

Correct Answer

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What is the major organic product obtained from the following sequence of reactions? What is the major organic product obtained from the following sequence of reactions?

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4


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

E) A) and D)
F) B) and D)

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1-butene B) 2-butene C) 2-methylpropene D) 2-methyl-1-propanol


A) 1-butene
B) 2-butene
C) 2-methylpropene
D) 2-methyl-1-propanol

E) C) and D)
F) None of the above

Correct Answer

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C

What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 2-pentanol B) pentane C) 1-pentene D) (E) 2-pentene


A) 2-pentanol
B) pentane
C) 1-pentene
D) (E) 2-pentene

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

Correct Answer

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Which of the following is not true about the Wittig reaction?


A) triphenylphosphine reacts with 2 °\degree alkyl bromides by an SN2 reaction to give an alkyltriphenylphosphonium bromide
B) alkyltriphenylphosphonium bromides are deprotonated by strong bases to give a phosphonium ylide
C) phosphonium ylids are nucleophilic
D) the product of the Wittig reaction is an alkyne

E) B) and C)
F) A) and D)

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4


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

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

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction?

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Which combination(s) of alkyl bromide and carbonyl compound can be used to prepare the following product by addition of the Grignard reagent derived from the alkyl bromide to the carbonyl compound? Which combination(s) of alkyl bromide and carbonyl compound can be used to prepare the following product by addition of the Grignard reagent derived from the alkyl bromide to the carbonyl compound? A) only 1 and 2 B) only 3 and 4 C) only 2 and 3 D) only 1, 2 and 3


A) only 1 and 2
B) only 3 and 4
C) only 2 and 3
D) only 1, 2 and 3

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

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4


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

E) B) and C)
F) A) and D)

Correct Answer

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Which ketone-diol undergoes cyclization to form the following acetal? Which ketone-diol undergoes cyclization to form the following acetal? A) 1 B) 2 C) 3 D) 4


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

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

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction?

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction?

Correct Answer

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Which of the following statements is not true?


A) The carbon atom of a carbonyl group is electrophilic
B) In general, aldehydes are more electrophilic than ketones
C) Nucleophilic addition to carbonyl groups can be catalyzed by acid or base
D) Addition of a nucleophile to a carbonyl group changes the hybridization of the carbonyl carbon from sp3 to sp2 hybridization

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

Correct Answer

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What is the major organic product obtained from the following reaction? What is the major organic product obtained from the following reaction? A) 1 B) 2 C) 3 D) 4


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

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

Correct Answer

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Which of the following is the best description of the overall transformation involved in a Wittig reaction?


A) addition
B) substitution
C) elimination
D) rearrangement

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

Correct Answer

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Showing 1 - 20 of 94

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