Nomenclature of Ketones
a. Ketones are named by dropping the -e ending of the parent name and adding -one.
The substituent name for the
O= group is oxo. Ketones can also be named by naming each of the two carbon groups as a separate word followed by a space and the word ketone.
2-pentanone
pentan-2-one
2-oxopentane
methyl 1-propyl ketone
·
Try to name the following compound using these conventions…b. Ring compounds can be named by dropping the
-e ending of the parent name and adding -one.
cyclopentanone
oxocyclopentane
·
Try to draw a structure for the following compound…3-methylcyclohexanone
J·
Try to name the following compound…c. Common names that you should know are...
acetone
…Try to name this compound using the above conventions. J
acetophenone…Try to name this compound using the above conventions. J
benzophenone…Try to name this compound using the above conventions. J
d. The Greek letters
a, b, g, etc. are used at times to designate attached groups on the second, third and fourth, etc. carbons from the carbonyl. This nomenclature is common for many functional groups such as aldehydes, carboxylic acids and derivatives of carboxylic acids.
a
-chloroacetophenone· Try to draw a structure for the following compound…
b
-bromobutanone JCopyright © August 2000 by Richard C. Banks...all rights reserved.
