Benzofuranone and benzodifuranone compounds

Details Benzofuranone and benzodifuranone compounds Benzofuranone and benzodifuranone compounds

1996-12-12

1998-02-10

Owens, Amelia

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549302, C07D40700, C07D30778

Patent

active

057171122

ABSTRACT:
Benzodifurantriones of Formula (1): ##STR1## in which W is unsubstituted or substituted aryl, a process for their preparation via dioxo intermediates and processes for their conversion into benzodifuranone dyes and compounds of Formula (7): ##STR2## are provided wherein R.sup.3 is --H, --COR.sup.2, --SO.sub.2 R.sup.2 -- which R.sup.2 is alkyl, cycloalkyl, aryl or aralkyl and R.sup.4 is --COOR.sup.2, --CONRR.sup.1 in which R and R.sup.1 each independently is --H, alkyl, cycloalkyl, aryl or aralkyl; --COOH or the alkali metal, alkaline earth metal or ammonium salts thereof; or --COX.sup.2 -- which X.sup.2 is halo.

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