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)

Question 2

The following transformation would be considered a(n)?

Accepted Answer

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

Question 3

LAH is the abbreviation for the powerful reducing agent ______________.

Accepted Answer

The answer of LAH is the abbreviation for the powerful...

Question 4

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

Accepted Answer

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

Question 5

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 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

The answer of In the reaction of carbonyl compounds with...

Question 8

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

Accepted Answer

The answer of Reaction of excess ethyl magnesium bromide with...

Question 9

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 10

Consider the molecule  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 11

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 12

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) 
 
E)  All of these are reductions.

Question 13

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 14

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 15

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 16

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 17

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

Question 18

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 19

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

Accepted Answer

The answer of Reaction of excess methyllithium with ethyl acetate...

Question 20

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.

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

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

The following transformation would be considered a(n) ?

LAH is the abbreviation for the powerful reducing agent ______________.

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

Predict the product(s) of the following reaction:

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

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

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

Predict the product(s) of the following reaction:

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

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

Which of these transformations cannot be classified as a reduction?

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

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

Which reaction is an oxidation?

Predict the product(s) of the following reaction:

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

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

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

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

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

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

The following transformation would be considered a(n) ?

LAH is the abbreviation for the powerful reducing agent ______________.

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

Predict the product(s) of the following reaction:

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

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

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

Predict the product(s) of the following reaction:

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

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

Which of these transformations cannot be classified as a reduction?

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

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

Which reaction is an oxidation?

Predict the product(s) of the following reaction:

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

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

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

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

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

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

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

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

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