| 摘要 |
Method for producing new cationic dyes of the generalized formula 1, where R denotes a methylic or hydroxy ethyl group, R1- the methylic group, hydroxy ethyl, or chloroethyl group, R2-denotes a hydrogen atom, or a nitro group, n denotes 1 or 2, and X<-> stands for anion Cl<-> or Br<->, characterised in that the quaternary salt of the generalized formula 2, where the symbols have meanings referred to above is condensated in the presence of an acetic anhydride and pyridine with a derivative of formylomethylenoindolenine of the generalized formula 3 where the symbols have meanings referred to above.<IMAGE>
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