Preparation of polycyclic dyes

Details Preparation of polycyclic dyes Preparation of polycyclic dyes

1993-06-14

1994-11-08

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30780, C07D30781

Patent

active

053628888

ABSTRACT:
A process for the preparation of a polycyclic dye of Formula (1): ##STR1## by reacting a compound of Formula (2): ##STR2## with a benzofuranone of Formula (3): ##STR3## wherein: R.sup.1 and R.sup.2 each independently is --H or alkyl;

REFERENCES:
patent: 4680417 (1987-07-01), Kenyon et al.
Bayer et al., "Darstellung und Eigenschaften mesoionisher Oxazolone", Chemische Berichte, 1970, vol. 103, pp. 2581-2597.

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