1 ,ZCyclohexanedione (I) is an interesting substance for which adequate synthesis methods are lacking. Its preparation and some chemical and physical properties are the subject matter of this paper. ... The method which is generally advocated in the literature for the preparation of 1,2-~yclohexanedione is the selenium oxide oxidation of cyclohexanone. Riley, Morley and Friend (1) report a yield of 19% and use alkaline extraction in the cold to separate the ...