| 摘要 |
Compounds of the formula <IMAGE> wherein Me denotes Zn, Cu, Co (II) or Ni; R1 denotes hydrogen, optionally substituted aryl or optionally substituted hetaryl; R2 denotes hydrogen, optionally substituted alkyl, cycloalkyl, aralkyl, aryl or hetaryl; R3 denotes a substituent; n denotes 0-4; and R4 denotes hydrogen or methyl; are suitable for pigmenting macromolecular substances and give very fast pigmentation.
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