2.6-dioxo-2.6-dehydrobenzo[1:2-b,4:5-b]difurans
US4680417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Oct 29, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound of the formula: ##STR1## wherein, Z.sup.1 and Z.sup.2 are each independently - O -, - S - or - NR.sup.5 - in which R.sup.5 is H or an optionally-substituted hydrocarbon group or an acyl group; PA0 X.sup.1 and X.sup.2 are selected from H, halogen, cyano, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, aryl, carbamoyl, sulphamoyl, carboxylic acid or carboxylic acid ester; PA0 R.sup.1 to R.sup.4 are each independently selected from H, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, C.sub.1-4 -alkenyl, halogen and the group - X - Y; PA0 X is - O - or - S -; and PA0 Y is C.sub.2-10 -alkenyl provided that, PA0 the substituents on rings A and B are different when Z.sup.1 and Z.sup.2 are the same or that Z.sup.1 and Z.sup.2 are different when the substituents on rings A and B are the same, which is suitable for the coloration of synthetic textile materials and processes for its preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.