
%0 Journal Article
%A Gream, GE 
%A Paice, JC 
%T Photochemistry of &#945;-diketones. III. Some photochemical reactions of 1,1,4.4-Tetramethyl-2,3-dioxotetralin in carbon tetrachloride
%J Australian Journal of Chemistry
%D 1969/06/01
%V 22
%N 6
%P 1249-1255
%K 
%R https://doi.org/10.1071/CH9691249
%U https://www.publish.csiro.au/paper/CH9691249 
%X Irradiation (at &#955; > 3000 &#506;) of 1,1,4,4-tetramethyl-2,3-dioxotetralin (I) in carbon tetrachloride under nitrogen gave 1,1,3,3- tetramethylindanone (III) (0.5%), 2-hydroxy-1,1,4,4-tetramethyl-3- oxotetralin (II) (21%), 2-hydroxy-1,1,4,4-tetramethyl-3-oxo-2- trichloromethyltetralin (IV) (14%), the cyclic unsaturated carbonate (VII) (7%), and 1-carboxymethyl-1,3,3-trimethylindanone (XII) (15%). When an atmosphere of oxygen was used the products were very different: of the above-mentioned compounds, only (III) (9%) was isolated. Other compounds isolated were &#945;,&#945;?-o-phenylenediisobutyric anhydride (XIV) (16%), the peroxy acid lactone (XIII) (5%), the lactone (XV) (16%), &#945;,&#945;?-o-phenylenediisobutyric acid (XVI) (6%), and &#945;-(o- isopropenyl)phenylisobutyric acid (XVII) (trace). This composition closely paralleled that obtained when benzene was used as solvent for the photooxidation. 
