KEETONE HOMOLOGOUS SERIES

Examples from thehomologous seriesof linear ketones in which a -carbonyl group is attached to thesecond carbon atom:

Note: Carbon atoms are counted from the right-side of molecules in the large table below but these structures could equally have been drawn the other way around, with carbon atoms counted from the left-side, i.e. the following two structures are equivalent andbothrepresent the same structure of2-butanone:

2-butanone

Likewise, the following two representations are alsoequivalent ways of drawing the same structure of2-butanoneas those represented above:

Therefore all four of the above representations of 2-butanone are equivalent.

Number carbons in chain

Name

Simple Structure

Other Names=Synonyns
(*Examples not complete lists)

and simple formula

showing bond types but not accurate bond angles

3

4

5

6

7

8

9

10