Heteroarylphthalides

Details Heteroarylphthalides Heteroarylphthalides

1980-03-14

1981-12-22

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D20982

Patent

active

043070183

ABSTRACT:
3-Aryl-3-indolylphthalides, 3-aryl-3-pyrrolylphthalides and 3-aryl-3-carbazolylphthalides prepared by interaction of the appropriate 2-(heteroaryl)carbonylbenzoic acid and the appropriate phenylamine, and 3,3-bis(indolyl)-phthalides prepared by the interaction of the appropriate 2-(indolyl)carbonylbenzoic acid and the appropriate indole are useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems.

REFERENCES:
patent: 2712507 (1953-06-01), Green
patent: 2800457 (1957-07-01), Green et al.
patent: 3041289 (1962-06-01), Katchen et al.
patent: 3491112 (1970-01-01), Lin
patent: 3491116 (1970-01-01), Lin
patent: 3509173 (1970-04-01), Lin
patent: 3509174 (1970-04-01), Lin
patent: 3779753 (1973-12-01), Bloom et al.

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