Question 1

What is the missing reagent in the reaction below?
4, [2] H2O B) [1] CH2=CHLi, [2] H2O C) [1] (CH2=CH) 2CuLi, [2] H2O D) [1] DIBAL-H, [2] H2O" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  [1] LiAlH4, [2] H2O
B)  [1] CH2=CHLi, [2] H2O
C)  [1] (CH2=CH) 2CuLi, [2] H2O
D)  [1] DIBAL-H, [2] H2OE) A) and D)
F) A) and C)

Question 2

What is the product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) All of the above
F) B) and C)

Question 3

What will be the product of the following reaction (before any aqueous work-up) ?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) A) and C) C

Question 4

What reagent would be used to reduce an amide to an amine?

Accepted Answer

A)  NaBH4 
B)  LiAlH(OtBu) 3 
C)  LiAlH4 
D)  FeCl3 E) A) and B)
F) C) and D)

Question 5

What is the product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) B) and C)
F) All of the above

Question 6

A carbonyl group, C=O, and an alkene, C=C, double bonds are both sp2 hybridized.However, the chemistry of These two functional groups is very different.This can be explained by which of the following statements?

Accepted Answer

A)  The bond angle of the carbonyl is larger than the bond angle of the alkene.
B)  The electronegative oxygen of the C=O group makes this bond polar.
C)  The bond of the C=C is longer that the bond of the C=O.
D)  There is more steric crowding in the carbonyl than in the alkene.E) A) and C)
F) B) and C)

Question 7

What is the major organic product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) C) and D)
F) B) and C)

Question 8

What is the major organic product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) None of the above
F) A) and B)

Question 9

What is the product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) C) and D)

Question 10

What is the missing reagent in the reaction below?
2O B) Benzene, AlCl3  C) Ph2CuLi then H2O D) PhLi then H2O" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  PhMgBr then H2O
B)  Benzene, AlCl3 
C)  Ph2CuLi then H2O
D)  PhLi then H2OE) A) and D)
F) A) and C)

Question 11

Both LiAlH4 and NaBH4 are reducing agents.Which statement about these reagents is true?

Accepted Answer

A)  Both reagents contain polar metal-hydrogen bonds.The polarity of the B-H bond is greater than the polarity of the Al-H bond, so LiAlH4 is the stronger reducing agent.
B)  Both reagents contain polar metal-hydrogen bonds.The polarity of the B-H bond is greater than the polarity of the Al-H bond, so LiAlH4 is the weaker reducing agent.
C)  Both reagents contain polar metal-hydrogen bonds.The polarity of the B-H bond is less than the polarity of the Al-H bond, so LiAlH4 is the stronger reducing agent.
D)  Both reagents contain polar metal-hydrogen bonds.The polarity of the B-H bond is less than the polarity of the Al-H bond, so LiAlH4 is the weaker reducing agent.E) B) and C)
F) All of the above C

Question 12

What is the missing reagent in the reaction below?
4, [2] H2O B) [1] CH3MgBr (excess) , [2] H2O C) [1] (CH3) 2CuLi (excess) , [2] H2O D) [1] DIBAL-H, [2] H2O" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  [1] LiAlH4, [2] H2O
B)  [1] CH3MgBr (excess) , [2] H2O
C)  [1] (CH3) 2CuLi (excess) , [2] H2O
D)  [1] DIBAL-H, [2] H2OE) B) and C)
F) All of the above

Question 13

What is the product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) B) and D)
F) A) and B)

Question 14

Which reagent can be used to reduce the alkene in cyclopentenone?

Accepted Answer

A)  NaBH4 
B)  LiAlH4 
C)  H2 and Pd-C
D)  DIBAL-HE) B) and C)
F) A) and C)

Question 15

What is the name of the general reaction type that aldehydes and ketones undergo?

Accepted Answer

A)  Electrophilic addition
B)  Nucleophilic addition
C)  Nucleophilic substitution
D)  Electrophilic substitutionE) B) and D)
F) A) and D)

Question 16

What is the starting material in the reaction below?

Accepted Answer

A)  Bromobenzene
B)  Benzyl bromide
C)  Benzoic acid
D)  Lithium benzoateE) All of the above
F) B) and C)

Question 17

What is the major organic product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) A) and C)

Question 18

Why are ketones less reactive than aldehydes?

Accepted Answer

A)  Ketones are more sterically hindered.
B)  Ketones are less electron deficient due to donation from the two alkyl groups.
C)  The statement is false; ketones are more reactive than aldehydes.
D)  Both (a)  Ketones are more sterically hindered and (b)  Ketones are less electron deficient due to donation from the two alkyl groups.E) All of the above
F) A) and B)

Question 19

Why would the alcohol in the following compound need to be protected before reaction?

Accepted Answer

A)  If it isn't protected, the product will be a carboxylic acid.
B)  The Grignard reagent will react with the alcohol before the ketone.
C)  Magnesium is Lewis acidic and will coordinate with the alcohol.
D)  There is no need to protect the alcohol.E) A) and B)
F) B) and D) B

Question 20

What is the product of the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) B) and C)
F) A) and D)

Exam 20: Introduction to Carbonyl Chemistry;

What is the missing reagent in the reaction below?

Correct AnswerverifiedShow Answer

What is the product of the following reaction?

Correct AnswerverifiedShow Answer

What will be the product of the following reaction (before any aqueous work-up) ?

Correct AnswerverifiedC

What reagent would be used to reduce an amide to an amine?

Correct AnswerverifiedShow Answer

What is the product of the following reaction?

Correct AnswerverifiedShow Answer

A carbonyl group, C=O, and an alkene, C=C, double bonds are both sp2 hybridized.However, the chemistry of These two functional groups is very different.This can be explained by which of the following statements?

Correct AnswerverifiedShow Answer

What is the major organic product of the following reaction?

Correct AnswerverifiedShow Answer

What is the major organic product of the following reaction?

Correct AnswerverifiedShow Answer

What is the product of the following reaction?

Correct AnswerverifiedShow Answer

What is the missing reagent in the reaction below?

Correct AnswerverifiedShow Answer

Both LiAlH4 and NaBH4 are reducing agents.Which statement about these reagents is true?

Correct AnswerverifiedC

What is the missing reagent in the reaction below?

Correct AnswerverifiedShow Answer

What is the product of the following reaction?

Correct AnswerverifiedShow Answer

Which reagent can be used to reduce the alkene in cyclopentenone?

Correct AnswerverifiedShow Answer

What is the name of the general reaction type that aldehydes and ketones undergo?

Correct AnswerverifiedShow Answer

What is the starting material in the reaction below?

Correct AnswerverifiedShow Answer

What is the major organic product of the following reaction?

Correct AnswerverifiedShow Answer

Why are ketones less reactive than aldehydes?

Correct AnswerverifiedShow Answer

Why would the alcohol in the following compound need to be protected before reaction?

Correct AnswerverifiedB

What is the product of the following reaction?

Correct AnswerverifiedShow Answer

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C

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Both LiAlH₄ and NaBH₄ are reducing agents.Which statement about these reagents is true?

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C

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B

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