Method of use of imidazolium cations
US6087510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1999 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Feb 8, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D491/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods of preparation of dyed textiles, fluorescent polymer matrices, fluorescent clonal markers, non-lineal optical polymers and diagnostic imaging agents are described using compounds with the general formula ##STR1## wherein A represents the atomic group necessary to form a heteroaromatic ring, wherein R may be a variety of; PA0 wherein P or Q are optional substituents, each independently a substituent selected from the group consisting of aryl, heteroaryl, lower alkyl, hydroxy, halo, lower alkylamino, amino, nitro, or carboxy, or P and Q together represent the atomic group necessary to form a heteroaromatic ring, wherein R' may be a variety of substituents; PA0 C is an optional substituent which represents the atomic group necessary to form an aromatic or heteroaromatic ring, wherein R"" may be a variety of substituents; PA0 R" is hydrogen, a lower alkyl or aryl group, or together with R'" and the nitrogen atom to which it is attached, form a heterocyclic ring having from 5 to 7 members, which may optionally contain a sulfur, oxygen, silicon, selenium or an additional nitrogen atom, said ring optionally substituted with at least one lower alkyl group; PA0 R'" is a lower alkyl …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.