3,5- And 5,5-bis(3-indolyl)-2-(5H)furanones

Details 3,5- And 5,5-bis(3-indolyl)-2-(5H)furanones 3,5- And 5,5-bis(3-indolyl)-2-(5H)furanones

1979-11-16

1984-05-29

Coughlan, Jr., Paul M.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548517, 548525, 346220, C07D40507

Patent

active

044516576

ABSTRACT:
Mono-, bis- and tris-indolyl-substituted furanones useful as color formers, particularly in carbonless duplicating and thermal marking systems, which are prepared respectively by: the interaction of an indole with mucochloric acid; the interaction of an indole with a 4-mono(indolyl-substituted 4-oxo-2-butenoic acid; and by the interaction of an indole with a 2,4-bis(indolyl)-substituted 4-oxobutanoic acid or with a 3,5-bis(indolyl)-substituted furanone.

REFERENCES:
patent: 3931228 (1976-01-01), Borror
Rees et al., J.C.S. 1965 (pp. 687-691).

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