Electrochemical synthesis of substituted aromatic amines in basic media
US4764263A · kind A · utility
7Cited by
5References
17Claims
0Family size
Assignee
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Key dates
| Filing date | May 18, 1987 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | May 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B3/25
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Substituted amino aromatic compounds such as 3-amino-4-hydroxybenzoic acid are prepared by electrolytically reducing the corresponding nitro aromatic compound in a basic medium at temperatures below 60.degree. C. and current densities greater than 50 milliamps per square centimeter. The aminohydroxybenzoic acids are useful in the preparation of polybenzoxazoles which are used to make fibers and composites having high strength and thermal stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.