Chemical synthesis of selenoacetic acid Se-anthracen-2-yl ester. 2-Bromoanthracene (1.13 g, 4.39 mmol) [1] was dissolved in THF (80 ml), cooled down to -78°C and tert.-butyllithium (5.9 ml, 8.9mmol) was added to this dropwise. After stirring during warming up to 0°C and cooling back to -78°C, black selenium powder (0.35 g, 4.4 mmol) was added. Again stirring upon warming up was done, following by addition of acetyl chloride (0.35 g, 4.5 mmol) into the cooled solution. Upon further stirring at room temperature, a colorless precipitate was formed. After adding water (100 ml), the aqueous phase was extracted with dichloromethane and the resulting organic phase washed with water (200 ml). After removal of the solvent in vacuum the crude yellow product (1.69 g) was subjected to column chromatography (silica, dichloromethane (5%-100%) / petrol ether, then silica, ethylacetate (5%-100% / petrol ether) and recrystallized from toluene yielding a yellow solid (0.40 g, 1.3 mmol, 30% 197.02, 135.86, 132.23, 131.89, 131.76, 131.30, 130.80, 129.01, 128.25, 128.15, 126.49, 126.32, 125.87, 125.74, 123.74, 34.17. . For background compensation all data were normalized by subtraction of a spectrum which was