1 / 10

Chapter 14 Aldehydes, Ketones, and Chiral Molecules

Chapter 14 Aldehydes, Ketones, and Chiral Molecules. 14.4 Addition Reactions of Aldehydes and Ketones. Addition Reactions. When a polar molecule adds to the carbonyl group of an aldehyde or ketone, the negative part of the added molecule bonds to the positive carbonyl carbon

dferrari
Download Presentation

Chapter 14 Aldehydes, Ketones, and Chiral Molecules

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 14 Aldehydes, Ketones, and Chiral Molecules 14.4Addition Reactions of Aldehydesand Ketones

  2. Addition Reactions When a polar molecule adds to the carbonyl group of an aldehyde or ketone, • the negative part of the added molecule bonds to the positive carbonyl carbon • the positive part of the added molecule bonds to the negative carbonyl oxygen

  3. Addition Reactions (continued)

  4. Acetal Formation Acetals • are the product of two alcohols adding to the carbonyl groups of aldehydes and ketones.

  5. Hemiacetal Formation A hemiacetal is • an intermediate produced when one alcohol adds to the carbonyl group of an aldehyde or ketone • usually unstable and difficult to isolate

  6. Cyclic Hemiacetals In glucose, a cyclic hemiacetal between the C═O group and the —OH forms a stable, six-atom ring

  7. Learning Check Identify each as a 1) hemiacetal or 2) acetal.

  8. Solution Identify each as a 1) hemiacetal or 2) acetal. 1) hemiacetal 2) acetal

  9. Learning Check Draw the condensed structural formula of the acetal formed by adding CH3OH to butanal.

  10. Solution Draw the condensed structural formula of the acetal formed by adding CH3OH to butanal.

More Related