1-isopropylamino-5-hydroxy-anthraquinone 、 溴 以
盐酸 为溶剂,
以15.95 parts of 1-isopropylamino-5-hydroxy-4-bromanthraquinone are obtained的产率得到1-isopropylamino-4-bromo-5-hydroxy-anthraquinone
Anthraquinone dyestuffs containing sulphonic acid groups
申请人:Bayer Aktiengesellschaft
公开号:US03980677A1
公开(公告)日:1976-09-14
Dyestuffs which contain sulphonic acid groups and correspond to the formula ##SPC1## In which R.sub.1 and R.sub.2 denote lower alkyl radicals with 1 - 3 carbon atoms, which may be substituted; A means an optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical; n stands for 0, 1 or 2; and R.sub.4 denotes a sulphonic acid group when n = 0 and denotes hydrogen or a sulphonic acid when n = 1 or 2. The dyestuffs are eminently suitable for the dyeing and printing of natural and synthetic polyamide fiber materials.
Compounds of formula ##SPC1## Wherein R.sub.1 and R.sub.2 independently of one another denote optionally substituted alkyl radicals with 1-3 C atoms and R.sub.3 represents hydrogen or an optionally substituted alkyl radical with 1-5 C atoms, as well as compounds of the formula ##SPC2## Wherein R.sub.4 represents an alkyl group which is optionally substituted by hydroxyl or alkoxy groups, and R.sub.5 and R.sub.6 represent hydrogen or an amino group which is monosubstituted or disubstituted by a straight-chain alkyl group or a cycloalkyl group, with the proviso that R.sub.5 and R.sub.6 do not simultaneously represent hydrogen, and processes for their production.