The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one is to be identified. Concept introduction: The Robinson annulations reaction is a two step process that combines a Michael reaction with an intramolecular aldol condensation reaction. In this reaction a nucleophilic donor such as β â€“ ketoester, an enamine or a βâ€“ diketone and an α, β- unsaturated ketone acceptor react to yield substituted cyclic ketones . To identify: The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one.

Question

What product(s) would you expect to obtain from reaction of 1, 3-cyclohexadiene witheach of the following?(a) 1 mol Br2in CH2Cl2(b) O3followed by Zn(c) 1 mol HCl in ether(d) 1 mol DCl in ether(e) 3-Buten-2-one (H2C = CHCOCH3)(f) Excess OsO4, followed by NaHSO3

Answer 1

Question

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 23.12, Problem 21P

Interpretation Introduction

Interpretation:

The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one is to be identified.

Concept introduction:

The Robinson annulations reaction is a two step process that combines a Michael reaction with an intramolecular aldol condensation reaction. In this reaction a nucleophilic donor such as β â€“ ketoester, an enamine or a βâ€“ diketone and an α, β- unsaturated ketone acceptor react to yield substituted cyclic ketones.

To identify:

The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one.

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What product(s) would you expect to obtain from reaction of 1, 3-cyclohexadiene witheach of the following?(a) 1 mol Br2in CH2Cl2(b) O3followed by Zn(c) 1 mol HCl in ether(d) 1 mol DCl in ether(e) 3-Buten-2-one (H2C = CHCOCH3)(f) Excess OsO4, followed by NaHSO3

when 5-iodo-1,3-cyclopentadiene was refluxed in neat methanol, even extended reaction times did not produce any product and the unomodified starting material was recovered, explain why

What alkyl halide would produce methylenecyclohexane after an E2 reacyion?

Answer 2

Question

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 23.12, Problem 21P

Interpretation Introduction

Interpretation:

The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one is to be identified.

Concept introduction:

The Robinson annulations reaction is a two step process that combines a Michael reaction with an intramolecular aldol condensation reaction. In this reaction a nucleophilic donor such as β â€“ ketoester, an enamine or a βâ€“ diketone and an α, β- unsaturated ketone acceptor react to yield substituted cyclic ketones.

To identify:

The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one.

Expert Solution & Answer

Trending nowThis is a popular solution!

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 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 23.12, Problem 21P

Interpretation Introduction

Interpretation:

The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one is to be identified.

Concept introduction:

The Robinson annulations reaction is a two step process that combines a Michael reaction with an intramolecular aldol condensation reaction. In this reaction a nucleophilic donor such as β â€“ ketoester, an enamine or a βâ€“ diketone and an α, β- unsaturated ketone acceptor react to yield substituted cyclic ketones.

To identify:

The product that is expected from the Robinson annulation reaction of 2-methyl-1, 3-cyclopentanedione with 3-buten-2-one.

Expert Solution & Answer

Trending nowThis is a popular solution!

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 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 23.12, Problem 21P

Interpretation Introduction