Question 1

What is the major product from the following reaction?

Accepted Answer

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

Question 2

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

Question 3

What is the major organic product of the following reaction?

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

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

Accepted Answer

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

Question 6

What is the major organic product of the following reaction?

Accepted Answer

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

Question 7

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 acids 
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

Question 8

What is the product of the following reaction?

Accepted Answer

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

Question 9

If a compound is reduced,what is the result?

Accepted Answer

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 
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

Question 10

What is the major product from the following reaction?

Accepted Answer

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

Question 11

What is the major organic product of the following reaction?

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

What is the major organic product of the following reaction?

Accepted Answer

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

Question 14

Rank the following compounds in order of increasing reactivity toward the nucleophilic hydride reagent,NaBH4.

Accepted Answer

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

Question 15

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

Accepted Answer

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

Question 16

What is the product of the following reaction?

Accepted Answer

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

Question 17

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

Accepted Answer

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. 
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.

Question 18

What is the missing reagent in the reaction below?

Accepted Answer

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

Question 19

What is the missing reagent in the reaction below?

Accepted Answer

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

Exam 17: Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

What is the major product from the following reaction?

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

What is the major organic product of the following reaction?

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

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

What is the major organic product of the following reaction?

What is the purpose of a silyl ether?

What is the product of the following reaction?

If a compound is reduced,what is the result?

What is the major product from the following reaction?

What is the major organic product of the following reaction?

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

What is the major organic product of the following reaction?

Rank the following compounds in order of increasing reactivity toward the nucleophilic hydride reagent,NaBH4.

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

What is the product of the following reaction?

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

What is the missing reagent in the reaction below?

What is the missing reagent in the reaction below?

Structure and Bonding

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols,ethers,and Related Compounds

Alkenes and Addition Reactions

Alkynes and Synthesis

Oxidation and Reduction

Radical Reactions

Conjugation,resonance,and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones - Nucleophilic Addition

Carboxylic Acids and the Acidity of the O-H Bond

Carboxylic Acids and Their Derivatives Nucleophilic Acyl Substitution

Substitution Reactions of Carbonyl Compounds at the a Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Spectroscopy A: Mass Spectrometry

Spectroscopy B: Infrared Spectroscopy

Spectroscopy C: Nuclear Magnetic Resonance Spectroscopy

Filters

Rank the following compounds in order of increasing reactivity toward the nucleophilic hydride reagent,NaBH₄.

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