Method of producing azomethine or indoaniline series dyes

Details Method of producing azomethine or indoaniline series dyes Method of producing azomethine or indoaniline series dyes

1990-08-23

1992-06-16

Shah, Mukund J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 94, 546166, 546168, 546158, 548359, 548365, 548366, 548545, 549 72, 549467, 549468, 549480, 558 10, C07D24908, C07D21502

Patent

active

051226111

ABSTRACT:
A method for producing an azomethine or indoaniline series dye, which comprises oxidatively condensing an active methylene- or methine-containing compound, except those containing a sulfonic or carboxylic acid group, and p-phenylenediamine, except those containing a sulfonic or carboxylic acid group, in the presence of methylene chloride as a solvent under a basic condition.

REFERENCES:
patent: 3507872 (1970-04-01), Hegar et al.
patent: 4122117 (1978-10-01), Ando et al.

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