(a) Interpretation: The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes. Concept introduction: One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C = C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide , like CH 3 X or RCH 2 X .

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Answer 1

Question

Chapter 21, Problem 21.21P

Interpretation Introduction

(a)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(b)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(c)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

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Students have asked these similar questions

What Wittig reagent and carbonyl compound are needed to prepare each alkene? When two routes are possible, indicate which route, if any, is preferred.

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Answer 2

Question

Chapter 21, Problem 21.21P

Interpretation Introduction

(a)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(b)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(c)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

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Answer 3

Question

Chapter 21, Problem 21.21P

Interpretation Introduction

(a)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(b)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(c)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

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Answer 4

Question

Chapter 21, Problem 21.21P

Interpretation Introduction

(a)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(b)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(c)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

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Answer 5

Chapter 21, Problem 21.21P

Interpretation Introduction

(a)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(b)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Interpretation Introduction

(c)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Answer 6

Chapter 21, Problem 21.21P

Interpretation Introduction

(a)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Answer 7

Chapter 21, Problem 21.21P

Interpretation Introduction

(a)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The starting materials that are needed to prepare the given alkene by Wittig reaction are to be predicted, and the preferred route is to be identified, if there are two possible routes.

Concept introduction:

One should follow the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene. The first step is cleaving of C=C into two components, carbonyl and Wittig reagent. The second step is selection of preferred pathway. While selection one should consider that pathway in which Wittig reagent is derived from an unhindered alkyl halide, like CH3X or RCH2X.

Answer 12

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Answer 13

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Answer 15

Ch. 21 - Rank the following compounds in order of...Ch. 21 - Prob. 21.2P Ch. 21 - Give the IUPAC name for each aldehyde.Ch. 21 - Prob. 21.4P Ch. 21 - Give the IUPAC name for each ketone.Ch. 21 - Prob. 21.6P Ch. 21 - Prob. 21.7P Ch. 21 - The boiling point of is significantly higher than...Ch. 21 - Which carbonyl group in each pair absorbs at a...Ch. 21 - Problem 21.10 Draw the structure of all...

Solution Summary: The author explains the two steps retrosynthesis to find out the starting materials that are needed to prepare the given alkene by Wittig reaction.

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