Lactone compounds containing an indolizine radical

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

1980-01-16

1981-06-23

Jiles, Henry R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 89, 546112, 544345, 544350, 427148, 427149, 427151, 282 275, C07D491048

Patent

active

042752060

ABSTRACT:
Chromogenic compounds of normally colorless form are disclosed having the following structural formula: ##STR1## wherein E represents a six-membered aromatic or heterocyclic ring which may have an aromatic ring or a naphthalene ring and both the E ring and the condensed ring may be substituted, A respresents an optionally substituted aminophenyl, indolyl, benzoindolyl, julolidinyl or kairolyl 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.

REFERENCES:
patent: 3509173 (1970-04-01), Lin
patent: 3540909 (1970-11-01), Lin
patent: 3736337 (1973-05-01), Farber
patent: 3775424 (1973-11-01), Farber
patent: 3853869 (1974-12-01), Farber
patent: 3936564 (1976-02-01), Miyazawa et al.
patent: 3958815 (1976-05-01), Poot et al.
patent: 4020068 (1977-04-01), Farber
patent: 4020068 (1977-04-01), Farber
patent: 4032545 (1977-06-01), Borror

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