Lactone compounds containing an indolizine radical

Details Lactone compounds containing an indolizine radical Lactone compounds containing an indolizine radical

C - Chemistry, Metallurgy

07

D

42/10, 260/245.1

C07D 471/04 (2006.01) B41M 5/145 (2006.01) B41M 5/327 (2006.01) C07D 491/048 (2006.01) C07D 519/00 (2006.01) C09B 11/26 (2006.01)

Patent

CA 1147728

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 or a naphthalene ring and both the E ring and the condensed ring may be substituted, a represents an option- ally substituted aminophenyl, indolyl, benzolndolyl, julolidinyl or kalrolyl radical or the radical represented by B, and B represents a family of indolizine radicals. The compounds of this invention are eligible for use in pressure-sensitive and heat-sensitive record materials and manifold marking systems.

345510

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