The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained. Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen. The anion so formed is reacted with an alkyl halide . The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid .

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Answer 1

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 17.18, Problem 40P

(a)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(b)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(c)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

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6. Match each of the lettered items in the column on the left with the most appropriate numbered item(s) in the column on the right. Some of the numbered items may be used more than once and some not at all. a. Z = 37 1. b. Mn 2. C. Pr element in period 5 and group 14 element in period 5 and group 15 d. S e. [Rn] 7s¹ f. d block metal 3. highest metallic character of all the elements 4. paramagnetic with 5 unpaired electrons 5. 4f36s2 6. isoelectronic with Ca²+ cation 7. an alkaline metal 8. an f-block element

Draw all formal charges on the structures below as is and draw 1 resonance structure that is more stable.

Part II. xiao isolated a compound TAD (Ca H 10 N₂) from tobacco and obtained its IR spectrum. Xiao proposed a chemical structure shown below: % Transmittance 4000 3500 3000 2500 2000 Wavenumber (cm-1) 1500 1000 (a) Explain why her proposed structure is inconsistent with the IR spectrum obtained (b) TAD exists as a tautomer of the structure xiao proposed. Draw the structure and explain why it is more compatible with the obtained spectrum. (C) what is the possible source for the fairly intense signal at 1621cm1

Answer 2

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 17.18, Problem 40P

(a)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(b)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(c)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

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Answer 3

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 17.18, Problem 40P

(a)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(b)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(c)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

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Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 17.18, Problem 40P

(a)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(b)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(c)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

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Answer 5

Chapter 17.18, Problem 40P

(a)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(b)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

(c)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

Answer 6

Chapter 17.18, Problem 40P

(a)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

Answer 7

Chapter 17.18, Problem 40P

(a)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

Answer 8

(b)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

Answer 9

(b)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

Answer 10

(c)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

Answer 11

(c)

Interpretation Introduction

Interpretation: The reason behind the given carboxylic acids cannot be prepared by a malonic ester synthesis has to be explained.

Concept introduction: Malonic ester synthesis is used to prepare carboxylic acids of the desired length. The malonic ester is reacted with an alkoxide base which removes a alpha hydrogen.

The anion so formed is reacted with an alkyl halide. The anion abstracts the alkyl group from the alkyl halide. On heating, decarboxylation takes place which gives the desired carboxylic acid.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 17.1 - Prob. 1P Ch. 17.1 - Prob. 2P Ch. 17.1 - Prob. 3P Ch. 17.1 - Prob. 4P Ch. 17.1 - Rank the compounds in each of the following groups...Ch. 17.2 - Explain why 92% of 2,4-pemtanedione exists as the...Ch. 17.3 - Draw the enol tautomers for each of the following...Ch. 17.3 - Prob. 8P Ch. 17.4 - Prob. 9P Ch. 17.4 - Prob. 10P

Solution Summary: The author explains that malonic ester synthesis is used to prepare carboxylic acids of the desired length.

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