a) Interpretation: The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given. Concept introduction: Alkenes react with H 2 in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene. To give: The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Question

Which alkene product would you expect to be the major product under kinetic conditions? Under thermodynamic conditions? The given pictures are the reactions in which we have to determine which alkene product we expect would be the major product under kinetic and thermodynamic conditions.

Answer 1

Question

Chapter 8.6, Problem 12P

Interpretation Introduction

a)

Interpretation:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Interpretation Introduction

b)

Interpretation:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene.

Interpretation Introduction

c)

Interpretation:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene.

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Which alkene product would you expect to be the major product under kinetic conditions? Under thermodynamic conditions? The given pictures are the reactions in which we have to determine which alkene product we expect would be the major product under kinetic and thermodynamic conditions.

When the given reactions below are done once, which of the following reactions is used to prepare dihalogenated alkyl halides as major products? Select one: O Reaction of ethane with Cl₂ in the presence of light Reaction of ethene with HBr Reaction of ethyne with two moles of HCI Reaction of ethene with Br₂ in H₂O

3-Hexanone can be synthesized from butanal and ethane using a Grignard reaction. The first step must be O creation of a carbocation O protonation of an oxygen nucleophilic attack of the aldehyde free radical halogenation preparation of an acetylide

Answer 2

Question

Chapter 8.6, Problem 12P

Interpretation Introduction

a)

Interpretation:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Interpretation Introduction

b)

Interpretation:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene.

Interpretation Introduction

c)

Interpretation:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene.

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Answer 3

Question

Chapter 8.6, Problem 12P

Interpretation Introduction

a)

Interpretation:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Interpretation Introduction

b)

Interpretation:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene.

Interpretation Introduction

c)

Interpretation:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene.

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Answer 4

Question

Chapter 8.6, Problem 12P

Interpretation Introduction

a)

Interpretation:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Interpretation Introduction

b)

Interpretation:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene.

Interpretation Introduction

c)

Interpretation:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene.

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Answer 5

Chapter 8.6, Problem 12P

Interpretation Introduction

a)

Interpretation:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Interpretation Introduction

b)

Interpretation:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene.

Interpretation Introduction

c)

Interpretation:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene.

Answer 6

Chapter 8.6, Problem 12P

Interpretation Introduction

a)

Interpretation:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Answer 7

Chapter 8.6, Problem 12P

Interpretation Introduction

a)

Interpretation:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 2-methyl-2-pentene.

Answer 8

Interpretation Introduction

b)

Interpretation:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene.

Answer 9

Interpretation Introduction

b)

Interpretation:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3,3-dimethylcyclopentene.

Answer 10

Interpretation Introduction

c)

Interpretation:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene.

Answer 11

Interpretation Introduction

c)

Interpretation:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene is to be given.

Concept introduction:

Alkenes react with H₂ in the presence of metal catalysts such as palladium or platinum to yield the corresponding alkanes as the products. The addition occurs with syn stereochemistry. Normally only a single product is produced as the catalyst will interact only from the least hindered and most accessible face of the alkene.

To give:

The product obtained by the catalytic hydrogenation of 3-tert-butylcyclohexene.

Answer 12

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Answer 23

Ch. 8.1 - Prob. 1P Ch. 8.1 - How many alkene products, including E,Z isomers,...Ch. 8.2 - Prob. 3P Ch. 8.2 - Addition of HCl to 1, 2-dimethylcyclohexene yields...Ch. 8.3 - Prob. 5P Ch. 8.3 - Prob. 6P Ch. 8.4 - Prob. 7P Ch. 8.4 - From what alkenes might the following alcohols...Ch. 8.5 - Prob. 9P Ch. 8.5 - What alkenes might be used to prepare the...

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