Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Thermally stable 1,2-dioxetanes have been synthesized by 9,10-dicyano-anthracene (DCA)-sensitized photooxygenation of alkoxy (aryl)-methylidene adamantanes. The reactions most likely proceed via a chain electron-transfer process.