The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate is to be given. Concept introduction: The synthesize required can be carried out by the following steps. i) Protecting the keto group in the ketoester by treating with a diol ii) reduction of the ester to a primary alcohol iii) oxidation of the primary alcohol to aldehyde iv) Wittig reaction of the aldehyde with a phosphorus ylide. v) removal of the acetol linkage by hydrolysis. To give: The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate.

Question

Q1. (a) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH3. Use curved arrows to show the electron movement. (b) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH4*. Use curved arrows to show the electron movement.

Answer 1

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 19.SE, Problem 77AP

Interpretation Introduction

Interpretation:

The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate is to be given.

Concept introduction:

The synthesize required can be carried out by the following steps. i) Protecting the keto group in the ketoester by treating with a diol ii) reduction of the ester to a primary alcohol iii) oxidation of the primary alcohol to aldehyde iv) Wittig reaction of the aldehyde with a phosphorus ylide. v) removal of the acetol linkage by hydrolysis.

To give:

The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate.

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Q1. (a) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH3. Use curved arrows to show the electron movement. (b) Draw equations for homolytic and heterolytic cleavages of the N-H bond in NH4*. Use curved arrows to show the electron movement.

Which is NOT the typical size of a bacteria? 1000 nm 0.001 mm 0.01 mm 1 um

None

Answer 2

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 19.SE, Problem 77AP

Interpretation Introduction

Interpretation:

The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate is to be given.

Concept introduction:

The synthesize required can be carried out by the following steps. i) Protecting the keto group in the ketoester by treating with a diol ii) reduction of the ester to a primary alcohol iii) oxidation of the primary alcohol to aldehyde iv) Wittig reaction of the aldehyde with a phosphorus ylide. v) removal of the acetol linkage by hydrolysis.

To give:

The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate.

Expert Solution & Answer

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See solution

Check out sample textbook solution

Answer 3

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 19.SE, Problem 77AP

Interpretation Introduction

Interpretation:

The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate is to be given.

Concept introduction:

The synthesize required can be carried out by the following steps. i) Protecting the keto group in the ketoester by treating with a diol ii) reduction of the ester to a primary alcohol iii) oxidation of the primary alcohol to aldehyde iv) Wittig reaction of the aldehyde with a phosphorus ylide. v) removal of the acetol linkage by hydrolysis.

To give:

The synthesis of 6–methyl–5–hepten–2–one from methyl– 4–oxo pentanoate.

Expert Solution & Answer

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See solution

Check out sample textbook solution

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 19.SE, Problem 77AP

Interpretation Introduction