Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated. Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

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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 ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 18.19, Problem 40P

(a)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(b)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone is to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(c)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

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A complete tensile test was performed on a magnesium specimen of 12 mm diameter and 30 mm length, until breaking. The specimen is assumed to maintain a constant volume. Calculate the approximate value of the actual stress at breaking. TABLE. The tensile force F and the length of the specimen are represented for each L until breaking. F/N L/mm 0 30,0000 30,0296 5000 10000 30,0592 15000 30,0888 20000 30,15 25000 30,51 26500 30,90 27000 31,50 26500 32,10 25000 32,79

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 ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 18.19, Problem 40P

(a)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(b)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone is to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(c)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

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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 ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 18.19, Problem 40P

(a)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(b)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone is to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(c)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

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Answer 4

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Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 18.19, Problem 40P

(a)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(b)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone is to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(c)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

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Answer 5

Chapter 18.19, Problem 40P

(a)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(b)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone is to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

(c)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

Answer 6

Chapter 18.19, Problem 40P

(a)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

Answer 7

Chapter 18.19, Problem 40P

(a)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

Answer 8

(b)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone is to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

Answer 9

(b)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone is to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

Answer 10

(c)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

Answer 11

(c)

Interpretation Introduction

Interpretation: Alkyl bromide used in the acetoacetic ester synthesis of each methyl ketone has to be stated.

Concept introduction: Acetoacetic ester synthesis is used to prepare methyl ketone of the desired length. The acetoacetic ester is reacted with an alkoxide base which removes a α hydrogen atom. The anion so formed is reacted with an alkyl bromide. The anion abstracts the alkyl group from the alkyl bromide. Acidic hydrolysis of the intermediate so formed on heating undergo decarboxylation which gives the desired methyl ketone.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 18.1 - Prob. 1P Ch. 18.1 - Prob. 2P Ch. 18.1 - Prob. 3P Ch. 18.1 - Prob. 4P Ch. 18.1 - PROBLEM 5♦ List the compounds in each of the...Ch. 18.2 - Explain why 92% of 2,4-pemtanedione exists as the...Ch. 18.3 - Draw the enol tautomers for each of the following...Ch. 18.3 - Prob. 8P Ch. 18.4 - Prob. 9P Ch. 18.4 - Prob. 10P

Solution Summary: The author explains that alkyl bromide is used in the acetoacetic ester synthesis of each methyl ketone.

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