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Aromatic-substituted xanthene dyes

  • US 6,008,379 A
  • Filed: 10/01/1997
  • Issued: 12/28/1999
  • Est. Priority Date: 10/01/1997
  • Status: Expired due to Term
First Claim
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1. An aromatic-substituted xanthene dye compound having the formula:

  • ##STR22## wherein;

    Y1 and Y2 taken separately are selected from the group consisting of hydroxyl, oxygen, imminium, linking group and amine, or Y1 taken together with R2 is cyclic amine, or Y2 taken together with R3 is cyclic imine;

    R2, R3, R5, and R7 taken separately are selected from the group consisting of hydrogen, fluorine, chlorine, lower alkyl, lower alkene, lower alkyne, sulfonate, sulfone, amino, imminium, amido, nitrile, lower alkoxy, phenyl, and linking group;

    R1 taken separately is selected from the group consisting of phenyl, substituted phenyl, polycyclic aromatic, substituted polycyclic aromatic, and electron-rich heterocycle, or when taken together with R7 is selected from the group consisting of electron-rich heterocycle;

    R4 taken separately is selected from the group consisting of hydrogen, fluorine, chlorine, lower alkyl, lower alkene, lower alkyne, sulfonate, sulfone, amino, imminium, amido, nitrile, lower alkoxy, phenyl, linking group, amine, phenyl, substituted phenyl, polycyclic aromatic, substituted polycyclic aromatic, indene, and electron-rich heterocycle, or when taken together with R5 is selected from the group consisting of phenyl, substituted phenyl, polycyclic aromatic, substituted polycyclic aromatic, indene, and electron-rich heterocycle; and

    R6 is selected from the group consisting of acetylene, lower alkyl, lower alkene, cyano, phenyl, substituted phenyl, heterocyclic aromatic, and combinations thereof, the substituted phenyl having the structure;

    ##STR23## wherein;

    X1 -X5 taken separately are hydrogen, chlorine, fluorine, lower alkyl, carboxylic acid, sulfonic acid, --CH2 OH, or linking group.

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