Presentation is loading. Please wait.

Presentation is loading. Please wait.

Reversible addition at a carbonyl group

Published byLynette Farmer Modified over 6 years ago

Similar presentations

Presentation on theme: "Reversible addition at a carbonyl group"— Presentation transcript:

1 Reversible addition at a carbonyl group
Reversible addition at a carbonyl group (A) If X and Y are not good leaving groups but the nucleophile is a good leaving group, then the reaction may reverse, as seen in the acid-catalysed reaction of a ketone with an alcohol. This reaction also occurs with aldehydes and the tetrahedral product is called a hemiacetal. (B) Formation of hemiacetal occurs during the cyclization of glucose. Amanda L. Jonsson et al. Essays Biochem. 2017;61: ©2017 by Portland Press Ltd

Download ppt "Reversible addition at a carbonyl group"

Similar presentations

Reactions of Ketones and Aldehydes Susan F. Hornbuckle Associate Professor of Chemistry Clayton State University.

Reactions of Ketones and Aldehydes Susan F. Hornbuckle Associate Professor of Chemistry Clayton State University.
Aldehyde and Ketone Reactions

Aldehyde and Ketone Reactions
Aldehid dan Keton.

Aldehid dan Keton.
Aldehydes, ketones. Required background: Structure of alkenes Nucleophilic substitution S N 1, S N 2 Essential for: 1. Carboxylic aids and their derivatives,

Aldehydes, ketones. Required background: Structure of alkenes Nucleophilic substitution S N 1, S N 2 Essential for: 1. Carboxylic aids and their derivatives,
1 Chapter 15 Aldehydes and Ketones and Chiral Molecules 15.6 Oxidation and Reduction 15.7 Addition Reactions.

1 Chapter 15 Aldehydes and Ketones and Chiral Molecules 15.6 Oxidation and Reduction 15.7 Addition Reactions.
Aldehydes from oxidation of primary alcohols using the Dess- Martin periodinane reagent 14.2 Preparing Aldehydes and Ketones.

Aldehydes from oxidation of primary alcohols using the Dess- Martin periodinane reagent 14.2 Preparing Aldehydes and Ketones.
1 Nucleophilic reactions involving enolate anions (2) Aldehydes, Ketons and other carbonyl compounds having H on α-C -> in equilibrium (in solution) ->

1 Nucleophilic reactions involving enolate anions (2) Aldehydes, Ketons and other carbonyl compounds having H on α-C -> in equilibrium (in solution) ->
Chapter 9 Aldehydes and Ketones: Nucleophilic Addition Reactions.

Chapter 9 Aldehydes and Ketones: Nucleophilic Addition Reactions.
1 Nucleophilic reactions of carbonyl groups Oxygen is more electronegative than carbon (3.5 vs 2.5) and, therefore, a C=O group is polar.

1 Nucleophilic reactions of carbonyl groups Oxygen is more electronegative than carbon (3.5 vs 2.5) and, therefore, a C=O group is polar.
Prentice Hall;Copyright 20071 16.6 Reduction of Aldehydes and Ketones The reduction of a carbonyl group occurs with the addition of hydrogen across the.

Prentice Hall;Copyright Reduction of Aldehydes and Ketones The reduction of a carbonyl group occurs with the addition of hydrogen across the.
Chapter 121 Carbonyl Compounds II: Chapter 12. Chapter 122 Contents of Chapter 12 Structure of Aldehydes and Ketones Naming Adehydes and Ketones Reactivity.

Chapter 121 Carbonyl Compounds II: Chapter 12. Chapter 122 Contents of Chapter 12 Structure of Aldehydes and Ketones Naming Adehydes and Ketones Reactivity.
What makes the carbonyl carbon electrophilic? 1.RESONANCE: What would the resonance hybrid look like? 2.INDUCTION: The carbonyl carbon is bonded to a very.

What makes the carbonyl carbon electrophilic? 1.RESONANCE: What would the resonance hybrid look like? 2.INDUCTION: The carbonyl carbon is bonded to a very.
Functional Groups.  Functional groups are groups of organic molecules that react in predictable ways  We use them to understand biochemical reactions.

Functional Groups.  Functional groups are groups of organic molecules that react in predictable ways  We use them to understand biochemical reactions.
Aldehydes and Ketones - carbonyl compounds carbonyl group - structure, bonding and physical properties.

Aldehydes and Ketones - carbonyl compounds carbonyl group - structure, bonding and physical properties.
CARBONYL CONDENSATION REACTIONS

CARBONYL CONDENSATION REACTIONS
Functional Groups Chemistry 11. Functional Groups There are several different groups that can be added to a hydrocarbon in order to change it into a different.

Functional Groups Chemistry 11. Functional Groups There are several different groups that can be added to a hydrocarbon in order to change it into a different.
Chapter 23. Carbonyl Condensation Reactions

Chapter 23. Carbonyl Condensation Reactions
Chapter 23. Carbonyl Condensation Reactions

Chapter 23. Carbonyl Condensation Reactions
Carbonyl Group (I) Aldehydes and Ketones Nanoplasmonic Research Group Organic Chemistry Chapter 9 Part I.

Carbonyl Group (I) Aldehydes and Ketones Nanoplasmonic Research Group Organic Chemistry Chapter 9 Part I.
HCN and CN – in synthesis Increasing carbon chain length.

HCN and CN – in synthesis Increasing carbon chain length.

Similar presentations

Ads by Google