Explain

In compounds where oxygen breaks a continuous chain of carbons, the compound must be named in two parts. In esters divide the compound between the carbon double bond oxygen and the part with the single bond oxygen.

The part with the single bond oxygen is named first with the root plus "-yl" ending. Example: methyl

The part with the carbon double bond oxygen is named second with the root plus "-oate" ending. Example:

 O          
 ||          
CH₃C-O-CH₂CH₂CH₃

propyl ethanoate