Question 1

Which of these compounds cannot be used to prepare the corresponding Grignard reagent?

Accepted Answer

A)   CH3OCH2CH2CH2Br
B)   (CH3) 3CCl
C)   CH2=CHCH2Br
D)   (CH3) 2NCH2CH2Br
E)  3OCH2CH2CH2Br 
B)   (CH3) 3CCl 
C)   CH2=CHCH2Br 
D)   (CH3) 2NCH2CH2Br 
E)    " class="answers-bank-image d-inline" rel="preload" >

Question 2

Predict the product(s) of the following reaction:

Accepted Answer

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

Question 3

Predict the product(s) of the following reaction sequence:

Accepted Answer

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

Question 4

The reaction of lithium di-sec-butylcuprate with isopentyl bromide yields:

Accepted Answer

A)   2,5-Dimethylheptane
B)   2,6-Dimethylheptane
C)   3,5-Dimethylheptane
D)   3,4-Dimethylheptane
E)   3,6-Dimethylheptane

Question 5

Which of these transformations cannot be classified as a reduction?

Accepted Answer

A)   RCH2Cl →\rightarrow→ RCH3
B)   RCH=CH2  →\rightarrow→ RCH2CH3
C)   RCOOH  →\rightarrow→  RCH2OH
D)  2Cl \rightarrow RCH3 
B)   RCH=CH2  \rightarrow RCH2CH3 
C)   RCOOH  \rightarrow  RCH2OH 
D)     
E)   All of these are reductions. " class="answers-bank-image d-inline" rel="preload" >
E)   All of these are reductions.

Question 6

Which reaction is an oxidation?

Accepted Answer

A)   RCHO  →\rightarrow→  RCO2H
B)   RCH2OH F →\rightarrow→  RCHO
C)   RCH2OH  →\rightarrow→ RCO2H
D)   None of these
E)   All of these

Question 7

Reaction of excess methyllithium with ethyl acetate (CH3CO2C2H5)produces,after acid work-up,____________.

Accepted Answer

t-butyl al...

Question 8

The following transformation would be considered a(n) ?

Accepted Answer

A)   reduction
B)   oxidation
C)   addition
D)   elimination
E)   rearrangement

Question 9

LAH is the abbreviation for the powerful reducing agent ______________.

Accepted Answer

lithium al...

Question 10

Predict the product(s) of the following reaction:

Accepted Answer

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

Question 11

Complete the following reaction sequence,giving structural details of all key intermediates.
1-hexene------------------$\rightarrow$
ii)Li
iii)(CH3CH2)2C=O
iv)C2H5I

Accepted Answer

The answer of Complete the following reaction sequence,giving structural details...

Question 12

Reaction of excess ethyl magnesium bromide with ethyl benzoate (C6H5CO2C2H5)produces,after acid work-up,____________.

Accepted Answer

3-phenyl-3...

Question 13

What would be the product,C,of the following reaction sequence?

Accepted Answer

A)   2,6-Dimethylheptane
B)   2,2-Dimethylpropane
C)   2-Methylpentane
D)   2,2,5-Trimethylhexane
E)   2,2,6-Trimethylheptane

Question 14

Which of these compounds can be used to prepare the corresponding Grignard reagent?

Accepted Answer

A)   CH3CHOHCH2CH2CH2CH2Br
B)   (CH3) 3CHCHBrCH2CH2CO2H
C)   BrCH=CHCH2CH2CH3
D)   CH3NHCH2CH2Br
E)   None of the above can be used to prepare the corresponding Grignard reagent.

Question 15

In the reaction of carbonyl compounds with LiAlH4,the effective reducing species is:

Accepted Answer

H <sup>-</...

Question 16

Suggest a reasonable synthetic strategy for the synthesis of 4-methyl-1,4-pentanediol from methyl-4-hydroxybutanoate HOCH2CH2CH2COOCH3.

Accepted Answer

Question 17

Consider the molecule 2SO4 B)  Br2/CCl4 C)  NaOH (aq)  D)  CrO3/H2SO4 E)  Dilute KMnO4/H2O" class="answers-bank-image d-inline" rel="preload" > Which reagent will not give a positive test with this compound?

Accepted Answer

A)   Cold conc.H2SO4
B)   Br2/CCl4
C)   NaOH (aq) 
D)   CrO3/H2SO4
E)   Dilute KMnO4/H2O

Question 18

Which reagent(s) is/are capable of reducing the following ester to a primary alcohol ? 4 / ether B)  NaBH4 / H2O C)  Na / C2H5OH D)  H2 / Ni,atmospheric pressure E)  All can be used successfully." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   LiAlH4 / ether
B)   NaBH4 / H2O
C)   Na / C2H5OH
D)   H2 / Ni,atmospheric pressure
E)   All can be used successfully.

Question 19

Predict the product(s) of the following reaction:

Accepted Answer

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

Question 20

List the following compounds in order of increasing level of oxidation:

Accepted Answer

A)   I,II,III
B)   III,II,I
C)   II,I,III
D)   III,I,II
E)   I,III,II

Exam 12: Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Which of these compounds cannot be used to prepare the corresponding Grignard reagent?

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What would be the product,C,of the following reaction sequence?

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Reaction of excess ethyl magnesium bromide with ethyl benzoate (C6H5CO2C2H5)produces,after acid work-up,____________.

Correct Answerverified3-phenyl-3...View AnswerShow Answer

Consider the molecule Which reagent will not give a positive test with this compound?

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Predict the product(s) of the following reaction:

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Which of these compounds can be used to prepare the corresponding Grignard reagent?

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Complete the following reaction sequence,giving structural details of all key intermediates. 1-hexene------------------ →\rightarrow→ ii)Li iii)(CH3CH2)2C=O iv)C2H5I

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In the reaction of carbonyl compounds with LiAlH4,the effective reducing species is:

Correct AnswerverifiedH -View AnswerShow Answer

Predict the product(s) of the following reaction:

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Suggest a reasonable synthetic strategy for the synthesis of 4-methyl-1,4-pentanediol from methyl-4-hydroxybutanoate HOCH2CH2CH2COOCH3.

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List the following compounds in order of increasing level of oxidation:

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Predict the product(s) of the following reaction:

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Which of these transformations cannot be classified as a reduction?

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The reaction of lithium di-sec-butylcuprate with isopentyl bromide yields:

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The following transformation would be considered a(n) ?

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Predict the product(s) of the following reaction sequence:

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Which reaction is an oxidation?

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Reaction of excess methyllithium with ethyl acetate (CH3CO2C2H5)produces,after acid work-up,____________.

Correct Answerverifiedt-butyl al...View AnswerShow Answer

LAH is the abbreviation for the powerful reducing agent ______________.

Correct Answerverifiedlithium al...View AnswerShow Answer

Which reagent(s) is/are capable of reducing the following ester to a primary alcohol ?

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Reaction of excess ethyl magnesium bromide with ethyl benzoate (C₆H₅CO₂C₂H₅)produces,after acid work-up,____________.

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3-phenyl-3...
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Complete the following reaction sequence,giving structural details of all key intermediates. 1-hexene------------------ $\rightarrow$ ii)Li iii)(CH₃CH₂)₂C=O iv)C₂H₅I

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In the reaction of carbonyl compounds with LiAlH₄,the effective reducing species is:

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H ^{-View Answer}

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Suggest a reasonable synthetic strategy for the synthesis of 4-methyl-1,4-pentanediol from methyl-4-hydroxybutanoate HOCH₂CH₂CH₂COOCH₃.

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Reaction of excess methyllithium with ethyl acetate (CH₃CO₂C₂H₅)produces,after acid work-up,____________.

Correct Answer
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t-butyl al...
View Answer

Correct Answer
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lithium al...
View Answer

Correct Answer
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