The molecule 2 , 4 − pentanedione undergoes intramolecular aldol addition or not is to be stated. Concept introduction: Aldol reaction is an addition reaction of aldehydes and ketones . Aldol reaction is a reversible reaction and occurs in the presence of a strong base like sodium hydroxide. One molecule (aldehyde or ketone) acts a nucleophile and attacks the electrophilic carbon center of the other molecule to give the addition product. The product is named β -hydroxy aldehyde if two aldehydes combine and β -hydroxy ketone if two ketones combine. If a compound has two carbonyl functional groups that can react with each other, an intramolecular reaction readily occurs. The reaction leads to the formation of five or six-membered rings.

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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 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 18.15, Problem 33P

Interpretation Introduction

Interpretation: The molecule 2,4−pentanedione undergoes intramolecular aldol addition or not is to be stated.

Concept introduction: Aldol reaction is an addition reaction of aldehydes and ketones. Aldol reaction is a reversible reaction and occurs in the presence of a strong base like sodium hydroxide.

One molecule (aldehyde or ketone) acts a nucleophile and attacks the electrophilic carbon center of the other molecule to give the addition product. The product is named β-hydroxy aldehyde if two aldehydes combine and β-hydroxy ketone if two ketones combine.

If a compound has two carbonyl functional groups that can react with each other, an intramolecular reaction readily occurs. The reaction leads to the formation of five or six-membered rings.

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How is the mechanism in this aldolic reaction?

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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 18.15, Problem 33P

Interpretation Introduction

Interpretation: The molecule 2,4−pentanedione undergoes intramolecular aldol addition or not is to be stated.

Concept introduction: Aldol reaction is an addition reaction of aldehydes and ketones. Aldol reaction is a reversible reaction and occurs in the presence of a strong base like sodium hydroxide.

One molecule (aldehyde or ketone) acts a nucleophile and attacks the electrophilic carbon center of the other molecule to give the addition product. The product is named β-hydroxy aldehyde if two aldehydes combine and β-hydroxy ketone if two ketones combine.

If a compound has two carbonyl functional groups that can react with each other, an intramolecular reaction readily occurs. The reaction leads to the formation of five or six-membered rings.

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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 18.15, Problem 33P

Interpretation Introduction

Interpretation: The molecule 2,4−pentanedione undergoes intramolecular aldol addition or not is to be stated.

Concept introduction: Aldol reaction is an addition reaction of aldehydes and ketones. Aldol reaction is a reversible reaction and occurs in the presence of a strong base like sodium hydroxide.

One molecule (aldehyde or ketone) acts a nucleophile and attacks the electrophilic carbon center of the other molecule to give the addition product. The product is named β-hydroxy aldehyde if two aldehydes combine and β-hydroxy ketone if two ketones combine.

If a compound has two carbonyl functional groups that can react with each other, an intramolecular reaction readily occurs. The reaction leads to the formation of five or six-membered rings.

Expert Solution & Answer

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Check out a sample textbook solution

See 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 18.15, Problem 33P

Interpretation Introduction