Question 1

Propose a structure that fits the following spectroscopic data:
C3H6O
IR: 1730 cm−1
1H NMR: 1.1 $\delta$ (triplet,3H),2.5 $\delta$ (doublet of quartets,2H),9.8 $\delta$ (doublet,1H)

Accepted Answer

The answer of Propose a structure that fits the following...

Question 2

What is the correct IUPAC name for the following compound?

Accepted Answer

A)  bicyclo[1.1.0]butan-2-one
B)  bicyclo[1.0.1]butan-2-one
C)  bicyclo[1.1.0]pentan-2-one
D)  bicyclo[0.1.1]butan-2-one
E)  bicyclo[1.0.1]pentan-2-oneF) None of the above
G) A) and D)

Question 3

The product,E,of the following sequence of reactions  would be:

Accepted Answer

A)  I
B)  II
C)  III
D)  IV
E)  None of these choices.F) A) and C)
G) A) and D)

Question 4

Select the structure of the major product in the following reaction.

Accepted Answer

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

Question 5

The 13C NMR spectrum of a compound with formula C7H14O gives five signals.Which of these structures is a possible one for this compound?

Accepted Answer

A)  2-Heptanone
B)  3-Heptanone
C)  2,2-Dimethyl-3-pentanone
D)  2,4-Dimethyl-3-pentanone
E)  Two of these choices.F) B) and E)
G) B) and C) C

Question 6

The product,E,of the following reaction sequence,  would be:

Accepted Answer

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

Question 7

What is the correct structure for (S) -7-bromo-1-octyn-4-one?

Accepted Answer

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

Question 8

The product,K,of the following sequence of reactions  would be:

Accepted Answer

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

Question 9

Which is the general formula for a thioacetal?

Accepted Answer

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

Question 10

What is the correct structure for 4-(1-methylcyclohexyl) -2-butanone?

Accepted Answer

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

Question 11

What would be the final product? 6H5CH=CHCH3 D)    E)   " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   6H5CH=CHCH3 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   6H5CH=CHCH3 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)  C6H5CH=CHCH3
D)   6H5CH=CHCH3 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   6H5CH=CHCH3 
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) B) and E)
G) C) and D)

Question 12

Acetaldehyde is reacted with excess methanol in acid.The product was isolated and gave the following 1H NMR spectroscopic data:
1.3 $\delta$ (doublet,3H)
3.4 $\delta$ (singlet,6H)
4.6 $\delta$ (quartet,1H)
Propose a structure consistent with this information.

Accepted Answer

The answer of Acetaldehyde is reacted with excess methanol in...

Question 13

Suggest a synthetic strategy for the synthesis of 3-heptanone from 1-butene.

Accepted Answer

The answer of Suggest a synthetic strategy for the synthesis...

Question 14

Which of the reactions listed below would serve as a synthesis of acetophenone,

Accepted Answer

A)  
B)   
C)   
D)  Two of these choices.
E)  All of these choices.F) D) and E)
G) A) and E)

Question 15

Aldehydes are more reactive than ketones towards nucleophilic substitution because of both steric and electronic factors.Briefly explain.
a)Steric reasons: ___.
b)Electronic reasons: ___.

Accepted Answer

a)aldehydes have a small hydrogen substi...

Question 16

Which reagent will not differentiate between 3-butenal and 2-butanone?

Accepted Answer

A)  Br2/CCl4
B)  Ag2O,OH-
C)  H2NNHC6H5
D)  KMnO4,OH-
E)  None of these choices.F) A) and B)
G) A) and E)

Question 17

Which of the following is not a synthesis of benzophenone,

Accepted Answer

A)   
B)   
C)   
D)   
E)  All of these choices will give benzophenone.F) A) and E)
G) B) and C) E

Question 18

What is the correct structure for 2,3-dimethyl-2-hepten-4-one?

Accepted Answer

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

Question 19

Which of the following is formed when 4-methylpentanal reacts with phenylhydrazine?

Accepted Answer

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

Question 20

Identify the reagent(s) that would bring about the following reaction: CH3CH2CH2COCl  →	o→ CH3CH2CH2CHO

Accepted Answer

A)  H2/Ni
B)  Li/liq.NH3
C)  LiAlH[OC(CH3) 3]3,ether
D)  NaBH4,CH3OH
E)  LiAlH4,ether F) B) and C)
G) All of the above

Exam 16: Aldehydes and Ketones

Propose a structure that fits the following spectroscopic data: C3H6O IR: 1730 cm−1 1H NMR: 1.1 δ\deltaδ (triplet,3H),2.5 δ\deltaδ (doublet of quartets,2H),9.8 δ\deltaδ (doublet,1H)

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What is the correct IUPAC name for the following compound?

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The product,E,of the following sequence of reactions would be:

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Select the structure of the major product in the following reaction.

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The 13C NMR spectrum of a compound with formula C7H14O gives five signals.Which of these structures is a possible one for this compound?

Correct AnswerverifiedC

The product,E,of the following reaction sequence, would be:

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What is the correct structure for (S) -7-bromo-1-octyn-4-one?

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The product,K,of the following sequence of reactions would be:

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Which is the general formula for a thioacetal?

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What is the correct structure for 4-(1-methylcyclohexyl) -2-butanone?

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What would be the final product?

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Acetaldehyde is reacted with excess methanol in acid.The product was isolated and gave the following 1H NMR spectroscopic data: 1.3 δ\deltaδ (doublet,3H) 3.4 δ\deltaδ (singlet,6H) 4.6 δ\deltaδ (quartet,1H) Propose a structure consistent with this information.

Correct Answerverified11eaa4bc_3e0d_7e60_9180_f911a4c71b16_TB5902_00

Suggest a synthetic strategy for the synthesis of 3-heptanone from 1-butene.

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Which of the reactions listed below would serve as a synthesis of acetophenone,

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Aldehydes are more reactive than ketones towards nucleophilic substitution because of both steric and electronic factors.Briefly explain. a)Steric reasons: ___. b)Electronic reasons: ___.

Correct Answerverifieda)aldehydes have a small hydrogen substi...View AnswerShow Answer

Which reagent will not differentiate between 3-butenal and 2-butanone?

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Which of the following is not a synthesis of benzophenone,

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What is the correct structure for 2,3-dimethyl-2-hepten-4-one?

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Which of the following is formed when 4-methylpentanal reacts with phenylhydrazine?

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Identify the reagent(s) that would bring about the following reaction: CH3CH2CH2COCl →\to→ CH3CH2CH2CHO

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Propose a structure that fits the following spectroscopic data: C₃H₆O IR: 1730 cm⁻¹ ¹H NMR: 1.1 $\delta$ (triplet,3H),2.5 $\delta$ (doublet of quartets,2H),9.8 $\delta$ (doublet,1H)

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The ¹³C NMR spectrum of a compound with formula C₇H₁₄O gives five signals.Which of these structures is a possible one for this compound?

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C

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Acetaldehyde is reacted with excess methanol in acid.The product was isolated and gave the following ¹H NMR spectroscopic data: 1.3 $\delta$ (doublet,3H) 3.4 $\delta$ (singlet,6H) 4.6 $\delta$ (quartet,1H) Propose a structure consistent with this information.

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11eaa4bc_3e0d_7e60_9180_f911a4c71b16_TB5902_00

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Aldehydes are more reactive than ketones towards nucleophilic substitution because of both steric and electronic factors.Briefly explain. a)Steric reasons: _. b)Electronic reasons: _.

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a)aldehydes have a small hydrogen substi...
View Answer

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E

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Identify the reagent(s) that would bring about the following reaction: CH₃CH₂CH₂COCl $\to$ CH₃CH₂CH₂CHO

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