Indolyl phthalide compounds

Details Indolyl phthalide compounds Indolyl phthalide compounds

1980-03-14

1982-03-30

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260315, 2603191, 26032613H, C07D20920, C07D20918, C07D20982, C07D20904

Patent

active

043223524

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 (1955-07-01), 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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