Question 1

Choose the statement below that is not true about the Suzuki reaction.

Accepted Answer

A) The product of the Suzuki reaction is completely stereospecific. 
B) The Suzuki reaction involves both an organoborane reagent and an organopalladium catalyst. 
C) The Suzuki reaction forms more highly substituted alkenes. 
D) The Suzuki reaction involves an oxidative addition followed by a reductive elimination. 
A) The product of the Suzuki reaction is completely stereospecific. 
B) The Suzuki reaction involves both an organoborane reagent and an organopalladium catalyst. 
C) The Suzuki reaction forms more highly substituted alkenes. 
D) The Suzuki reaction involves an oxidative addition followed by a reductive elimination. C

Question 2

Identify 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 B

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 D

Question 4

Identify 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 5

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 6

Dichlorocarbene reacts with an alkene to form a cyclopropane derivative.In this reaction the dichlorocarbene acts as a(n)

Accepted Answer

A) Lewis base. 
B) electrophile. 
C) nucleophile. 
D) Brønsted-Lowry base. 
A) Lewis base. 
B) electrophile. 
C) nucleophile. 
D) Brønsted-Lowry base.

Question 7

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 8

What is the name for the type of intermediate X formed in the reaction sequence below?

Accepted Answer

A) A carbocation 
B) A carbanion 
C) A free radical 
D) A carbene 
A) A carbocation 
B) A carbanion 
C) A free radical 
D) A carbene

Question 9

As shown below,when cis-2-butene reacts with dichlorocarbene,only the cis-1,1-dichloro-2,3-dimethylcyclopropane is formed.What can we conclude about the nature of the reaction mechanism?

Accepted Answer

A) The mechanism is an SN1 mechanism. 
B) The mechanism is a concerted. 
C) The mechanism proceeds through a radical intermediate. 
D) The mechanism is an E2 mechanism. 
A) The mechanism is an SN1 mechanism. 
B) The mechanism is a concerted. 
C) The mechanism proceeds through a radical intermediate. 
D) The mechanism is an E2 mechanism.

Question 10

Coupling reactions with vinyl halides are stereospecific.Which choice below best describes the expected product when trans-1-bromo-1-hexene reacts with (CH3)2CuLi?

Accepted Answer

A) The reaction will only yield a trans-alkene. 
B) The reaction will only yield a cis-alkene. 
C) The reaction will only yield one enantiomeric product with R configuration. 
D) The reaction will only yield one enantiomeric product with S configuration. 
A) The reaction will only yield a trans-alkene. 
B) The reaction will only yield a cis-alkene. 
C) The reaction will only yield one enantiomeric product with R configuration. 
D) The reaction will only yield one enantiomeric product with S configuration.

Question 11

Identify the starting material that would be used to form the following product in a ring-closing metathesis reaction utilizing a Grubbs catalyst?

Accepted Answer

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

Question 12

Which of the following is true about the use of the Grubbs catalyst?

Accepted Answer

A) The Grubbs catalyst is used in carbon-carbon coupling reactions. 
B) The Grubbs catalyst is used in alkene metathesis. 
C) The Grubbs catalyst is used in carbene formation. 
D) The Grubbs catalyst is used with palladium as a co-catalyst. 
A) The Grubbs catalyst is used in carbon-carbon coupling reactions. 
B) The Grubbs catalyst is used in alkene metathesis. 
C) The Grubbs catalyst is used in carbene formation. 
D) The Grubbs catalyst is used with palladium as a co-catalyst.

Question 13

Organocuprate reagents (R2CuLi)react with several compounds.Which listed reaction is not correct?

Accepted Answer

A) Acid chlorides react with organocuprate reagents to form ketones. 
B) Epoxides react with organocuprate reagents to form alcohols. 
C) Alkyl halides react with organocuprate reagents to form coupling products containing a new carbon-carbon bond. 
D) Carbon dioxide reacts with organocuprate reagents to form carboxylic acids. 
A) Acid chlorides react with organocuprate reagents to form ketones. 
B) Epoxides react with organocuprate reagents to form alcohols. 
C) Alkyl halides react with organocuprate reagents to form coupling products containing a new carbon-carbon bond. 
D) Carbon dioxide reacts with organocuprate reagents to form carboxylic acids.

Question 14

Starting with chloroform,what reactions order and reagents are necessary to produce the following product?

Accepted Answer

A) [1] KOC(CH3)3,[2] trans-2-butene 
B) [1] KOC(CH3)3,[2] cis-2-butene 
C) [1] trans-2-butene,[2] KOC(CH3)3 
D) [1] cis-2-butene,[2] KOC(CH3)3 
A) [1] KOC(CH3)3,[2] trans-2-butene 
B) [1] KOC(CH3)3,[2] cis-2-butene 
C) [1] trans-2-butene,[2] KOC(CH3)3 
D) [1] cis-2-butene,[2] KOC(CH3)3

Question 15

Starting with chloroform,what reactions order and reagents are necessary to produce the following product and its enantiomer?

Accepted Answer

A) [1] KOC(CH3)3,[2] trans-2-butene 
B) [1] KOC(CH3)3,[2] cis-2-butene 
C) [1] trans-2-butene,[2] KOC(CH3)3 
D) [1] cis-2-butene,[2] KOC(CH3)3 
A) [1] KOC(CH3)3,[2] trans-2-butene 
B) [1] KOC(CH3)3,[2] cis-2-butene 
C) [1] trans-2-butene,[2] KOC(CH3)3 
D) [1] cis-2-butene,[2] KOC(CH3)3

Question 16

Identify the products of the following reaction.

Accepted Answer

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

Question 17

Identify the structure of the major organic product that results from the following reaction.

Accepted Answer

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

Question 18

Which of the following statements is not true about a carbene?

Accepted Answer

A) A carbene is a neutral reactive intermediate. 
B) A carbene contains a divalent carbon. 
C) A carbene is sp3 hybridized. 
D) A carbene is surrounded by six electrons. 
A) A carbene is a neutral reactive intermediate. 
B) A carbene contains a divalent carbon. 
C) A carbene is sp3 hybridized. 
D) A carbene is surrounded by six electrons.

Question 19

What reactant would be necessary to produce the product indicated in the following reaction?

Accepted Answer

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

Question 20

What products are formed when diazomethane is heated?

Accepted Answer

A) Methane gas and nitrogen gas 
B) Propene gas and nitrogen gas 
C) Methyl radical and nitrogen gas 
D) Methylene and nitrogen gas 
A) Methane gas and nitrogen gas 
B) Propene gas and nitrogen gas 
C) Methyl radical and nitrogen gas 
D) Methylene and nitrogen gas

Exam 24: Carbon-Carbon Bond-Forming Reactions in Organic Synthesis

Choose the statement below that is not true about the Suzuki reaction.

Identify the major organic product of the following reaction.

What is the major organic product of the following reaction?

Identify the major organic product of the following reaction.

What is the major organic product of the following reaction?

Dichlorocarbene reacts with an alkene to form a cyclopropane derivative.In this reaction the dichlorocarbene acts as a(n)

What is the major organic product of the following reaction?

What is the name for the type of intermediate X formed in the reaction sequence below?

As shown below,when cis-2-butene reacts with dichlorocarbene,only the cis-1,1-dichloro-2,3-dimethylcyclopropane is formed.What can we conclude about the nature of the reaction mechanism?

Coupling reactions with vinyl halides are stereospecific.Which choice below best describes the expected product when trans-1-bromo-1-hexene reacts with (CH3)2CuLi?

Identify the starting material that would be used to form the following product in a ring-closing metathesis reaction utilizing a Grubbs catalyst?

Which of the following is true about the use of the Grubbs catalyst?

Organocuprate reagents (R2CuLi)react with several compounds.Which listed reaction is not correct?

Starting with chloroform,what reactions order and reagents are necessary to produce the following product?

Starting with chloroform,what reactions order and reagents are necessary to produce the following product and its enantiomer?

Identify the products of the following reaction.

Identify the structure of the major organic product that results from the following reaction.

Which of the following statements is not true about a carbene?

What reactant would be necessary to produce the product indicated in the following reaction?

What products are formed when diazomethane is heated?

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

Introduction to Carbonyl Chemistry; Organometallic Reagents; Oxidation and Reduction

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

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Molecular Ion Peaks and Fragmentation Patterns

Analyzing Molecular Motion and Infrared Spectroscopy

Organic Spectroscopy Concepts

Filters

Coupling reactions with vinyl halides are stereospecific.Which choice below best describes the expected product when trans-1-bromo-1-hexene reacts with (CH₃)₂CuLi?

Organocuprate reagents (R₂CuLi)react with several compounds.Which listed reaction is not correct?