Lactone compounds containing a heterocyclic radical

Details Lactone compounds containing a heterocyclic radical Lactone compounds containing a heterocyclic radical

C - Chemistry, Metallurgy

07

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260/271, 260/273

C07D 471/04 (2006.01) B41M 5/145 (2006.01) B41M 5/327 (2006.01) C07D 487/04 (2006.01) C07D 513/04 (2006.01) C09B 11/26 (2006.01)

Patent

CA 1129855

ABSTRACT OF THE DISCLOSURE Chromogenic compounds of normally colorless form are disclosed having the following structural formula: Image wherein E represents a six-membered aromatic or heterocyclic ring which may have an aromatic condensed ring and both the E ring and the condensed ring may be substituted, A represents an optionally substituted aminophenyl, indolyl, benzoindolyl, julolidinyl or kairolyl radical or the radical represented by B, and B represents a family of heterocyclic radicals. The compounds of this invention are eligible for use in pressure sensitive and heat sensitive record materials and manifold marking systems.

345054

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