Lactone compounds containing a heterocyclic radical

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

1979-03-05

1980-12-30

Coughlan, Jr., Paul M.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

282 275, 544117, 544126, 544127, 544135, 544139, 544281, 544347, 544350, 546 84, 546121, 548150, 548154, 548324, C07D491048

Patent

active

042425131

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 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.

REFERENCES:
patent: 3916070 (1975-10-01), Ozutsumi et al.
patent: 4020068 (1977-04-01), Farber
patent: 4100169 (1978-07-01), Petitpierre

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