The complete, detailed mechanism for the given reaction is to be drawn, and major product for the same reaction is to be predicted. Concept introduction: The intramolecular Claisen condensation of the diester, on treatment with a strong base, leads to form the β-keto ester. This is known as the Dieckmann condensation reaction. the α carbon of the carbonyl compound has an acidic proton, which can be easily abstracted by the strong base. The carbanion is formed, which is resonance stabilized with corresponding more stable enolate form. This enolate adds the second carbonyl carbon of the diester, and simultaneously, the alkoxide group ( RO - ) is eliminated to form the β-keto ester as the product. So the Dieckmann condensation involves intramolecular nucleophilic addition-elimination reaction. In most of the cyclization reaction, Dieckmann condensation occurs. Dieckmann condensation does not occur when the ring size is less than five-member or more than eight members due to angle strain. The proton of α carbon of the ketones and aldehydes is more acidic than that of ester.

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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 21, Problem 21.28P

Interpretation Introduction

Interpretation:

The complete, detailed mechanism for the given reaction is to be drawn, and major product for the same reaction is to be predicted.

Concept introduction:

The intramolecular Claisen condensation of the diester, on treatment with a strong base, leads to form the β-keto ester. This is known as the Dieckmann condensation reaction. the α carbon of the carbonyl compound has an acidic proton, which can be easily abstracted by the strong base. The carbanion is formed, which is resonance stabilized with corresponding more stable enolate form. This enolate adds the second carbonyl carbon of the diester, and simultaneously, the alkoxide group (RO-) is eliminated to form the β-keto ester as the product. So the Dieckmann condensation involves intramolecular nucleophilic addition-elimination reaction. In most of the cyclization reaction, Dieckmann condensation occurs. Dieckmann condensation does not occur when the ring size is less than five-member or more than eight members due to angle strain. The proton of α carbon of the ketones and aldehydes is more acidic than that of ester.

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for this question. Write the molecular formula for a compound with the possible elements C, H, N and O that exhibits a molecular ion at M+ = 98.1106. Exact Masses of the Most Abundant Isotope of Selected Elements Isotope Natural abundance (%) Exact mass 1H 99.985 1.008 12C 98.90 12.000 14N 99.63 14.003 160 99.76 15.995 Molecular formula (In the order CHNO, with no subscripts)

PLEASE READ!!! I DONT WANT EXAMPLES, I DONT WANT WORDS OR PARAGRAPHS!!! PLEASE I UNDERSTAND THE BASICS BUT THIS IS AN EXCEPTION THAT EVEN THE INTERNET CANT HELP!!!! THIS IS THE THIRD TIME I'VE SENT THOSE QUESTIONS SO PLEASE DONT RESEND THE SAME STUFF, ITS NOT HELPING ME!!! I ALSO ALREADY TRIED TO DRAW THE MECHANISM MYSELF, SO IF ITS RIGHT PLEASE TELL ME OR TELL ME WHAT I HAVE TO CHANGE!!! First image: I have to SHOW (DRAWING) the mechanism (with arows and structures of molecules) NOT WORDS PLEASE! of the reaction at the bottom. Also I have to show by mecanism why the reaction wouldn't work if the alcohol was primary Second image: I have to show the mechanism (IMAGE) (with arrows and structures of the molecules) NOT WORDS PLEASE !! for the reaction on the left, where the alcohol A is added fast in one portion HOMEWORK, NOT EXAM!! ALL DETAILS ARE IN THE IMAGES PLEASE LOOK AT THE IMAGES, DONT LOOK AT THE AI GENERATED TEXT!!!

Write the molecular formula for a compound with the possible elements C, H, N and O that exhibits a molecular ion at M+ = 85.0899. Exact Masses of the Most Abundant Isotope of Selected Elements Isotope Natural abundance (%) Exact mass 1H 99.985 1.008 12C 98.90 12.000 14N 99.63 14.003 160 99.76 15.995 Molecular formula (In the order CHNO, with no subscripts)

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 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 21, Problem 21.28P

Interpretation Introduction

Interpretation:

The complete, detailed mechanism for the given reaction is to be drawn, and major product for the same reaction is to be predicted.

Concept introduction:

The intramolecular Claisen condensation of the diester, on treatment with a strong base, leads to form the β-keto ester. This is known as the Dieckmann condensation reaction. the α carbon of the carbonyl compound has an acidic proton, which can be easily abstracted by the strong base. The carbanion is formed, which is resonance stabilized with corresponding more stable enolate form. This enolate adds the second carbonyl carbon of the diester, and simultaneously, the alkoxide group (RO-) is eliminated to form the β-keto ester as the product. So the Dieckmann condensation involves intramolecular nucleophilic addition-elimination reaction. In most of the cyclization reaction, Dieckmann condensation occurs. Dieckmann condensation does not occur when the ring size is less than five-member or more than eight members due to angle strain. The proton of α carbon of the ketones and aldehydes is more acidic than that of ester.

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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 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 21, Problem 21.28P

Interpretation Introduction

Interpretation:

The complete, detailed mechanism for the given reaction is to be drawn, and major product for the same reaction is to be predicted.

Concept introduction:

The intramolecular Claisen condensation of the diester, on treatment with a strong base, leads to form the β-keto ester. This is known as the Dieckmann condensation reaction. the α carbon of the carbonyl compound has an acidic proton, which can be easily abstracted by the strong base. The carbanion is formed, which is resonance stabilized with corresponding more stable enolate form. This enolate adds the second carbonyl carbon of the diester, and simultaneously, the alkoxide group (RO-) is eliminated to form the β-keto ester as the product. So the Dieckmann condensation involves intramolecular nucleophilic addition-elimination reaction. In most of the cyclization reaction, Dieckmann condensation occurs. Dieckmann condensation does not occur when the ring size is less than five-member or more than eight members due to angle strain. The proton of α carbon of the ketones and aldehydes is more acidic than that of ester.

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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 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 21, Problem 21.28P

Interpretation Introduction