Abstract
Reliable procedures are given for the purification of perylene, and for the preparation and purification of 3,10-perylenequinone, 1,12-perylenequinone, 2,11-dihydroxy-3,10-perylenequinone, 4,9-dihydroxy3,10-perylenequinone, 4-oxo-4H-benz[de]anthracene-7,8-dicarboxylic anhydride, phenanthrene 1,8,9,10-tetracarboxylic dianhydride, and anthraquinone-l,5-dicarboxylic acid. Data on the physical properties of 3,9-perylenequinone are also reported.