Patent ID: 8592806

Claim:
A quinone derivative of general formula (I) wherein 1, 2 or 3 of the radicals R 1 to R 4 are CN, wherein 1, 2, or 3 of the radicals R 1 to R 4 , independently of one another, are phthalimide radical of general formula (II) wherein # is the linking point to a ring carbon atom of the quinone ring, wherein R 5 , R 6 , R 7 , and R 8 , independently of one another, are selected from hydrogen, fluorine, chlorine, bromine, cyano, nitro, nitroso, formyl, acyl, COOH, carboxylate, alkylcarbonyloxy, carbamoyl, SO 3 H, sulphonate, sulphamino, sulphamide, amidino, NE 1 E 2 , alkyl, alkoxy, alkylamino, alkylthio, alkylsulphinyl, alkylksulphonyl, alkenyl, alkadienyl, alkynyl, cycloalkyl, bicycloalkyl, cycloalkenyl, heterocycloalkyl, aryl, heteroaryl, or a condensed ring system containing 1, 2, or 3 further rings comprising two or more adjacent radicals selected from R 5 to R 8 together with the carbon atom of the benzene nucleus to which R 5 to R 8 are bound, wherein the alkyl, alkoxy, alkylamino, alkylthio, alkylsulphinyl, alkylksulphonyl, alkenyl, alkadienyl, alkynyl, cycloalkyl, bicycloalkyl, cycloalkenyl, heterocycloalkyl, aryl, and heteroaryl groups may be unsubstituted or substituted, and wherein E 1 and E 2 , independently of one another, are selected from hydrogen, alkyl, cycloalkyl, or aryl, and wherein the radicals R 1 to R 4 , which are not selected from CN or a phthalimide radical of general formula (II), are selected independently of one another from hydrogen, fluorine, chlorine, bromine, cyano, nitro, nitroso, formyl, acyl, COOH, carboxylate, alkylcarbonyloxy, carbamoyl, SO 3 H, sulphonate, sulphamino, sulphamide, amidino, NE 3 E 4 , alkyl, alkoxy, alkylamino, alkylthio, alkylsulphinyl, alkylksulphonyl, alkenyl, alkadienyl, alkynyl, cycloalkyl, bicycloalkyl, cycloalkenyl, heterocycloalkyl, aryl, heteroaryl, or a condensed ring system containing 1, 2, or 3 further rings comprising R 1 and R 2 and/or R 3 and R 4 together with the carbon atom of the quinone ring to which R 1 and R 2 and/or R 3 and R 4 are bound, wherein E 3 and E 4 , independently of one another, are selected from hydrogen, alkyl, cycloalkyl or aryl, and wherein the alkyl, alkoxy, alkylamino, alkylthio, alkylsulphinyl, alkylksulphonyl, alkenyl, alkadienyl, cycloalkyl, bicycloalkyl, cycloalkenyl, heterocycloalkyl, aryl, or heteroaryl may be unsubstituted or substituted.