
TY  - JOUR
A1  - Gream, GE 
A1  - Paice, JC 
T1  - Photochemistry of &#945;-diketones. III. Some photochemical reactions of 1,1,4.4-Tetramethyl-2,3-dioxotetralin in carbon tetrachloride
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1969
VL  - 22
IS  - 6
SP  - 1249
EP  - 1255
KW  - 
UR  - https://doi.org/10.1071/CH9691249 
N2  - 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. 
ER  -

