Patent ID: 7351829

Claim:
A compound of the formula I or II wherein (a) R 1 and R 3 to R 12 may each be the same or different and is selected from the group consisting of hydrogen, chlorine, bromine, and a substituent selected from the group consisting of an alkyl, aryl, heteroaryl, cycloalkyl, heterocycloalkyl, alkyloxy, alkylmercapto, aryloxy, arylmercapto, heteroaryloxy, heretoarylmercapto, cyano, an isocyano, isothiocyano, hydrazino, amino, monochloro- and dichloro- or monobromo- and dibromo-triazinyl, aziridino, sulfonyl halogenid, N-hydroxysuccinyl, imido, glyoxyl, maleimido, iodacetamido, and phosphoramido; and wherein the substituent may also contain, apart from carbon and hydrogen, as many as 4 oxygen atoms and 0, 1 or 2 nitrogen atoms, or one sulfur atom, or one sulfur and one nitrogen atom; (b) R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , and R 6 and R 7 together may form an aromatic, non-aromatic or nitrogen-containing 5- or 6-member ring; (c) X represents oxygen or sulfur; (d) n is zero, 1, 2 or 3; (e) and with the proviso that R 2 must contain a nitrogen atom and is a substituted or unsubstituted amino group or a nitrogen-containing 5- or 6- membered ring.