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What is the major organic product of the following reaction? What is the major organic product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) A) and C)

Correct Answer

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What is the major product from the following reaction? What is the major product from the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

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

Correct Answer

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What is the missing reagent in the reaction below? What is the missing reagent in the reaction below? A) [1] LiAlH<sub>4</sub>,[2] H<sub>2</sub>O B) [1] CH<sub>3</sub>MgBr (excess) ,[2] H<sub>2</sub>O C) [1] (CH<sub>3</sub>) <sub>2</sub>CuLi (excess) ,[2] H<sub>2</sub>O D) [1] DIBAL-H,[2] H<sub>2</sub>O


A) [1] LiAlH4,[2] H2O
B) [1] CH3MgBr (excess) ,[2] H2O
C) [1] (CH3) 2CuLi (excess) ,[2] H2O
D) [1] DIBAL-H,[2] H2O

E) None of the above
F) B) and C)

Correct Answer

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What is the purpose of a silyl ether?


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 acids

E) B) and D)
F) B) and C)

Correct Answer

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What is the product of the following reaction? What is the product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

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

Correct Answer

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Rank the following compounds in order of increasing reactivity (least to most reactive) with respect to acyl substitution. I.methyl benzoate II) benzoylchloride III) benzamide


A) III< I < II
B) II < I < III
C) II < III < I
D) I < III < II

E) C) and D)
F) B) and C)

Correct Answer

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


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) A) and D)
F) B) and C)

Correct Answer

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What is the major organic product in the following sequence of reactions? What is the major organic product in the following sequence of reactions? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) B) and D)

Correct Answer

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If a compound is reduced,what is the result?


A) Fewer C-H bonds
B) Increased number of C-H bonds
C) Fewer C-Z bonds
D) Both increased number of C-H bonds and fewer C-Z bonds

E) A) and B)
F) A) and C)

Correct Answer

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


A) NaBH4/CH3OH
B) H2 and Pd-C
C) FeCl3
D) NaH

E) B) and C)
F) A) and B)

Correct Answer

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What is the major organic product of the following reaction? What is the major organic product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and C)
F) B) and C)

Correct Answer

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What is the major product from the following reaction? What is the major product from the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

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

Correct Answer

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


A) Electrophilic addition
B) Nucleophilic addition
C) Nucleophilic substitution
D) Electrophilic substitution

E) A) and B)
F) A) and C)

Correct Answer

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Rank the following compounds in order of increasing reactivity toward the nucleophilic hydride reagent,NaBH4. Rank the following compounds in order of increasing reactivity toward the nucleophilic hydride reagent,NaBH<sub>4</sub>. A) I < II < III B) III < II < I C) II < III < I D) II < I < III


A) I < II < III
B) III < II < I
C) II < III < I
D) II < I < III

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

Correct Answer

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


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

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

Correct Answer

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What is the missing reagent in the reaction below? What is the missing reagent in the reaction below? A) Et<sub>2</sub>CuLi then H<sub>2</sub>O B) EtMgBr then H<sub>2</sub>O C) NaBH<sub>4</sub>/CH<sub>3</sub>OH D) H<sub>2</sub>,Pd-C


A) Et2CuLi then H2O
B) EtMgBr then H2O
C) NaBH4/CH3OH
D) H2,Pd-C

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

Correct Answer

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What is the major organic product of the following reaction? What is the major organic product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and D)
F) C) and D)

Correct Answer

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What is the product of the following reaction? What is the product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) C) and D)
F) B) and C)

Correct Answer

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What is the major organic product of the following reaction? What is the major organic product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

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

Correct Answer

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Showing 41 - 59 of 59

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