(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

Based on the characteristics of the carbonyl group (C = O), what reactions or transformations take place with aldehydes and ketones? a. nucleophilic additions by oxygenb. electrophilic additions by carbon attackc. nucleophilic additions by carbon attackd. electrophilic substitutions through a carbocationand. acid-base because carbonyl can act as both an electrophile and a nucleophile

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Draw the products and identify the type of reaction. What functional groups is in the starting material and which functional groups are in the final product.

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 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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Chapter 21 Solutions