Phosphonophenylaminonaphthalene compounds
US4051175A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Apr 30, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/3834
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Naphthalene compounds of the formula: ##STR1## WHEREIN M IS 0, 1 OR 2 PA1 n is 0 or can be 1 if m is 1 or 2, in which case X.sub.1 is NH.sub.2 or OH in m position to a SO.sub.3 H group PA1 X is a divalent alkylene, aralkylene or arylene radical, which may be substituted and PA1 p is 1 or 2. The new compounds are useful dyestuff intermediates, especially as coupling components for the manufacture of azo dyestuffs. This invention relates to new naphthalene compounds and more particularly to new naphthalene compounds valuable for use in the synthesis of dyestuffs. According to the invention, there are provided compounds of the formula: ##STR2## WHEREIN M IS 0, 1 OR 2 PA1 n is 0 or can be 1 if m is 1 or 2, in which case X.sub.1 is NH.sub.2 or OH in m position to a SO.sub.3 H group PA1 X is a divalent alkylene, aralkylene or arylene radical, which may be substituted, and PA1 p is 1 or 2. An alkylene group represented by X in formula (1) may be straight chain or branched, and may contain OH. It preferably contains less than 6 carbon atoms, e.g. methylene, trimethylene, tetramethylene, propylene, hexamethylene or hydroxypropylene, but the preferred alkylene radical is ethylene. An aralkyl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.