Lecture 5 - Aldehydes and Ketones

Lecture 5 - Aldehydes and Ketones - BME 201, Aldehydes and...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
1 BME 201, Aldehydes and Ketones Suggested problems review material: Vollhardt, problems Chapter 17 Todays lecture is based on Vollhardt, selected materials from chapter 17 ( aldehydes and ketones ) as well as selected handouts. Handouts may have marked chapter numbers and page numbers for suggested reading. You will find it easier to do the suggested problems and pass future quizzes and exams if you go over the reading prior to attempting to solve the suggested problems.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Aldehydes and Ketones
Background image of page 2
3 Naming the Aldehydes and Ketones 17-1 The aldehyde function takes precedence over the ketone group in nomenclature. Simpler aldehydes often retain their common names. These are constructed by dropping the – ic or – oic acid ending and replacing it with –aldehyde: Many ketones also have common names consisting of the substituent names followed by the word ketone . Dimethyl ketone is best known as acetone. Phenyl ketones have common names ending in – phenone .
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 IUPAC nomenclature treats aldehydes as derivatives of alkanes. The ending –e is replaced by – al . An alkane becomes an alkanal. Chem Abstracts retains the common names of the first two aldehydes: The names parallel those of the 1-alkanols except that the aldehyde carbon is assumed to be C1 and does not have to be specified.
Background image of page 4
5 When an aldehyde is attached to a ring it is called a carbaldehyde . The carbon atom bearing the aldehyde is C1. The simplest aromatic aldehyde, benzenecarbaldehyde, is referred to using its common name, benzaldehyde, by Chem Abstracts.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 Ketones are called alkanones, the ending – e of the alkane is replaced with – one . IUPAC provides an exception for the simplest ketone, propanone, the common name of which is acetone. The carbonyl carbon of a ketone is assigned the smallest possible number, regardless of the presence of other substituents or the – OH, C=C or C C functional groups. Aromatic ketones are named as aryl-substituted alkanones.
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/20/2012 for the course BME 201 taught by Professor Schmidt during the Fall '11 term at Purdue University.

Page1 / 33

Lecture 5 - Aldehydes and Ketones - BME 201, Aldehydes and...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online