Topic: Function Group #4-Ketones

Do Now: In terms of IMF, explain the difference in boiling point

• General Format:

R and R' may or may not be the same(but have to be carbons/carbon chains)

Carbonyl group: located within C chain

RCR'

=

O

C=O

Properties

• Carboxyl group makes ketone molecules polar = soluble in water

• Dipole-Dipole interactions– Boiling point:

• higher than alkanes (same # C’s) • lower than alcohols (same # C’s)

Have you ever smelled a ketone?!

Camphor

Naming Ketones

• Must use number to indicate location of

carboxyl group – use lowest possible number

• Take corresponding alkane name:

– Drop -e & add -one

2-propanoneCommon name = acetone

2-pentanone