Question 1

What reagent can be used to cleave a silyl ether protecting group?

Accepted Answer

A)  NaOMe
B)  MeMgBr
C)  Bu4NF
D)  Pd/CE) B) and D)
F) B) and C)

Question 2

If the starting material has no stereogenic centers, when carbonyl compounds are reduced with a reagent such as LiAlH4 or NaBH4 and a new stereogenic center is formed, what will the composition of the product mixture be?

Accepted Answer

A)  Forms a racemic mixture of the two possible enantiomers
B)  Forms more of one enantiomer than another because of steric reactions around the carbonyl
C)  Forms more of one enantiomer than another depending on the temperature of the reaction
D)  Forms different products depending on the solvent usedE) All of the above
F) A) and B)

Question 3

What is the major organic product in the following sequence of reactions?

Accepted Answer

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

Question 4

Which reagent can be used to reduce an acid chloride to an aldehyde?

Accepted Answer

A)  NaBH4 
B)  LiAlH(OtBu) 3 
C)  LiAlH4 
D)  FeCl3 E) All of the above
F) B) and C)

Question 5

What is the major organic product of the following reaction?

Accepted Answer

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

Question 6

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 7

Which reagent can be used to reduce the carbonyl in methyl vinyl ketone?

Accepted Answer

A)  NaBH4/CH3OH
B)  H2 and Pd-C
C)  FeCl3 
D)  NaHE) B) and D)
F) None of the above

Question 8

What is the missing reagent in the reaction below?
4/CH3OH B) H2, Pd-C C) LiAlH4 then H2O D) MeMgBr then H2O" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  NaBH4/CH3OH
B)  H2, Pd-C
C)  LiAlH4 then H2O
D)  MeMgBr then H2OE) C) and D)
F) B) and D)

Question 9

What is the purpose of a silyl ether?

Accepted Answer

A)  To protect esters from organometallic reagents and other reagents
B)  To protect ketones from organometallic reagents and other reagents
C)  To protect alcohols from organometallic reagents and other reagents
D)  To prevent the formation of carboxylic acidsE) All of the above
F) A) and D)

Exam 20: Introduction to Carbonyl Chemistry;

What is the product of the following reaction?

Correct Answer
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What is the major organic product of the following reaction?

Correct Answer
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If the starting material has no stereogenic centers, when carbonyl compounds are reduced with a reagent such as LiAlH₄ or NaBH₄ and a new stereogenic center is formed, what will the composition of the product mixture be?

Correct Answer
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What is the purpose of a silyl ether?

Correct Answer
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Which reagent can be used to reduce the carbonyl in methyl vinyl ketone?

Correct Answer
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What reagent can be used to cleave a silyl ether protecting group?

Correct Answer
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What is the major organic product in the following sequence of reactions?

Correct Answer
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Which reagent can be used to reduce an acid chloride to an aldehyde?

Correct Answer
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What is the missing reagent in the reaction below?

Correct Answer
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Exam 20: Introduction to Carbonyl Chemistry;

What is the product of the following reaction?

Correct AnswerverifiedShow Answer

What is the major organic product of the following reaction?

Correct AnswerverifiedShow Answer

If the starting material has no stereogenic centers, when carbonyl compounds are reduced with a reagent such as LiAlH4 or NaBH4 and a new stereogenic center is formed, what will the composition of the product mixture be?

Correct AnswerverifiedShow Answer

What is the purpose of a silyl ether?

Correct AnswerverifiedShow Answer

Which reagent can be used to reduce the carbonyl in methyl vinyl ketone?

Correct AnswerverifiedShow Answer

What reagent can be used to cleave a silyl ether protecting group?

Correct AnswerverifiedShow Answer

What is the major organic product in the following sequence of reactions?

Correct AnswerverifiedShow Answer

Which reagent can be used to reduce an acid chloride to an aldehyde?

Correct AnswerverifiedShow Answer

What is the missing reagent in the reaction below?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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If the starting material has no stereogenic centers, when carbonyl compounds are reduced with a reagent such as LiAlH₄ or NaBH₄ and a new stereogenic center is formed, what will the composition of the product mixture be?

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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