To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of 2,6-heptanedione 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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

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Answer 1

Question

Chapter 18.15, Problem 32P

(a)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,6-heptanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

(b)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,8-nonanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

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In the Friedel-Crafts alkylation of benzene, dialkylation is often a significant by-product. In the Friedel-Crafts acylation of benzene, diacylation is not a significant by-product. Which of the following is the primary reason for this difference? a. Acyl cations are more difficult to make with Lewis acids b.Unlike acyl cations, carbocations can undergo rearrangements. c.Alkyl groups activate the ring to further substitution, acyl groups deactivate it. d. Alkyl groups activate the ring to further substitution, acyl groups deactivate it

2. When the following pair of reactants are combined in the presence of a basic catalyst, a number of aldol addition products are possible (since both of the reactants possess an acidic alpha proton). a. b. C. CH3 + H₂C H NaOH/H₂O Draw the structures for the two possible enolate ions. Draw the structures for all possible aldol addition products (also show the enolate ion and electrophilic carbonyl compound responsible for each product). For each of the aldol addition products predicted in part b, draw the structures for all of the corresponding aldol condensation products after loss of water (if E/Z isomers are possible, show both isomers)

Provide the reactants that would give the following aldol condensation product. ... H + A. له شوه B. مله .H .. C. D. H

Answer 2

Question

Chapter 18.15, Problem 32P

(a)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,6-heptanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

(b)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,8-nonanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

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Answer 3

Question

Chapter 18.15, Problem 32P

(a)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,6-heptanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

(b)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,8-nonanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

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Answer 4

Question

Chapter 18.15, Problem 32P

(a)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,6-heptanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

(b)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,8-nonanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

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Check out a sample textbook solution

See solution

Answer 5

Chapter 18.15, Problem 32P

(a)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,6-heptanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

(b)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,8-nonanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

Answer 6

Chapter 18.15, Problem 32P

(a)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,6-heptanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

Answer 7

Chapter 18.15, Problem 32P

(a)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,6-heptanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

Answer 8

(b)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,8-nonanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

Answer 9

(b)

Interpretation Introduction

Interpretation: To prepare the cyclic product other than six-membered rings from intramolecular aldol addition of

2,8-nonanedione

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 functional groups that can react with each other, an intramolecular reaction readily occurs if the reaction leads to occur five or six-membered rings.

Answer 10

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Answer 11

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Answer 12

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Answer 13

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 aldol reaction is an addition reaction of aldehydes and ketones.

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Chapter 18 Solutions