Phenothiazinium salts and their use for disinfecting aqueous effluents
US5220009A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D279/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel 3,7-disubstituted phenothiazinium salts are active in the photochemical disinfection of aqueous effluents. The novel salts are of the general formula ##STR1## wherein: either R.sub.1 is a saccharide residue; PA0 R.sub.2 is alkyl, cycloalkyl, aryl, aralkyl or heterocyclyl, any alkyl or alkylene chain being optionally interrupted by one or more heteroatoms, and Y is alkylene optionally substituted by alkyl, cycloalkyl, aryl or aralkyl; or PA0 R.sub.1 and R.sub.2 are each methyl and Y is a bond; and when R.sub.1 is a saccharide residue X is an anion selected from halogen, R.sub.3 CO.sub.2.sup.-, R.sub.3 SO.sub.3.sup.- and R.sub.3 OSO.sub.3.sup.-, wherein R.sub.3 is alkyl, cycloalkyl, aryl, aralkyl or heterocyclyl, and PA0 when R.sub.1 and R.sub.2 are each methyl, X is an anion selected from R.sub.3 SO.sub.3.sup.-, R.sub.3 OSO.sub.3.sup.- wherein R.sub.3 is as defined above and R.sub.4 CO.sub.2.sup.-, wherein R.sub.4 is an aldose or ketose residue, an N-protected .alpha.-amino acid residue or a .omega.-carboxy-.alpha.-amino acid residue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.