Photochemical reaction of anthracene in cyclohexane polycrystals dispersed in liquid nitrogen

U.v. photolysis of a polycrystalline solution of anthracene in cyclohexane at 77 K followed by separation of the stable photoproducts at room temperature, yielded 9,10-dihydroanthracene, 9-cyclohexyl-9,10-dihydroanthracene, 9-cyclohexylanthracene, and oxidized derivatives of anthracene.