The two different methods to carry out the given transformation; a one-step method using a Wittig reaction, and a two-step method using a Grignard reagent are to be stated and the preferred route is to be identified. Concept introduction: The Wittig reaction is always preferred for the synthesis of alkene rather than other elimination reactions. The mostly elimination methods generally gives mixture of constitutional isomers, through E1 reaction.

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Answer 1

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 21, Problem 21.57P

Interpretation Introduction

Interpretation: The two different methods to carry out the given transformation; a one-step method using a Wittig reaction, and a two-step method using a Grignard reagent are to be stated and the preferred route is to be identified.

Concept introduction: The Wittig reaction is always preferred for the synthesis of alkene rather than other elimination reactions. The mostly elimination methods generally gives mixture of constitutional isomers, through E1 reaction.

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Show two different methods to carry out the following transformation: a one-step method using a Wittig reagent, and a two-step method using a Grignard reagent. Which route, if any, is preferred?

Use any reagent necessary to complete the following transformation.

Which Wittig reagent is necessary to complete the following transformation?

Answer 2

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 21, Problem 21.57P

Interpretation Introduction

Interpretation: The two different methods to carry out the given transformation; a one-step method using a Wittig reaction, and a two-step method using a Grignard reagent are to be stated and the preferred route is to be identified.

Concept introduction: The Wittig reaction is always preferred for the synthesis of alkene rather than other elimination reactions. The mostly elimination methods generally gives mixture of constitutional isomers, through E1 reaction.

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Answer 3

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 21, Problem 21.57P

Interpretation Introduction

Interpretation: The two different methods to carry out the given transformation; a one-step method using a Wittig reaction, and a two-step method using a Grignard reagent are to be stated and the preferred route is to be identified.

Concept introduction: The Wittig reaction is always preferred for the synthesis of alkene rather than other elimination reactions. The mostly elimination methods generally gives mixture of constitutional isomers, through E1 reaction.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 21, Problem 21.57P

Interpretation Introduction