| 摘要 |
Method and composition for a ketosultam of the general formula <IMAGE> in which R1 and R2 are identical or different and each denote hydrogen, (C1 to C8)-alkyl, which is optionally substituted by one or several halogen atoms, hydroxy groups, cyano groups or (C1 to C4)-alkoxy groups, or phenyl, R3 denotes hydrogen or a (C1 to C4)-alkyl group or (C1 to C4)-alkoxy group, n is a number from 1 to 4, or R1, R2 and R3, together with the corresponding aminophenyl group, denote julolidinyl or N-(C1 to C3)-alkylcarbazol-3-yl. The compounds are used in the preparation of sensitizers and dyes.
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