Talk:3-Oxetanone

Lactones and ketones
The article used to say that 3-oxetanone was "one of the two ketones of oxetane, the other being beta-Propiolactone". This sentence was removed on the grounds that lactones are not ketones, and indeed the ketone article requires the atoms adjacent to the carbonyl to be carbons. But the IUPAC "-one" nomenclature seems to take a broader view, and uses "2-oxetanone" for beta-propiolactone. Does that nomenclature reflect an alternative view of ketones (that they include lactones as special cases), or does it only mean that IUPAC chose to use the same "one" nomenclature for the two classes? --Jorge Stolfi (talk) 16:41, 2 January 2011 (UTC)