22FURANONES AND PREPARATION THEREOF

Title:

22FURANONES AND PREPARATION THEREOF

Document Type and Number:

Japanese Patent JPS5291859

Kind Code:

A

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.

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Inventors:

NEIZAN NOOMAN KUROUNSU
POORU JIYOSEFU SHIYUMITSUTO

Application Number:

JP631277A

Publication Date:

August 02, 1977

Filing Date:

January 22, 1977

Export Citation:

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Assignee:

STERLING DRUG INC

International Classes:

B41M5/136; B41M5/145; B41M5/323; C07D209/12; C07D209/14; C07D209/18; C07D307/58; C07D307/94; C07D405/04; C07D405/14; (IPC1-7): B41M5/18; C07D209/12; C07D209/14; C07D307/58; C07D405/04; C07D405/14

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