4,6-diaminopyrimidine or the like intermediates for the preparation of fiber-reactive dyes
US4975530A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Nov 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/51
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Intermediates useful for the preparation of fiber-reactive dyes having the formula ##STR1## in which Q is phenyl unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, nitro, cyano, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylsulfonyl, sulfo or trihalomethyl; 1- or 2-naphthyl; or unsubstituted or C.sub.1 -C.sub.4 alkyl, nitro, cyano, C.sub.1 -C.sub.4 alkoxycarbonyl or C.sub.1 -C.sub.4 alkylthio substituted furanyl, thienyl, thiazolyl, oxazolyl, isothiazolyl, benzothiazolyl, benzoisothiazolyl, pyrazolyl, imidazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl or 1,3,5-triazinyl, and A.sub.1 and A.sub.2 independently of one another are a radical of the formula ##STR2## in which R.sub.1 and R.sub.2 independently of one another are hydrogen; C.sub.1 -C.sub.4 alkyl unsubstituted or substituted by hydroxyl, sulfo, sulfato, carboxyl, cyano, halogen, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkanoyloxy or carbamoyl and uninterrupted or with the exception of methyl interrupted by --O-- or --NR.sub.4 -- wherein R.sub.4 is hydrogen or C.sub.1 -C.sub.4 alkyl, or naphthyl or phenyl each of which is unsubstituted…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.