Organic compounds
US3936496A · kind A · utility
1Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1972 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | Dec 13, 1992 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a novel process for the production of benzidine compounds having at least one nuclear sulphonic acid group, comprising reacting a nitro- or nitroso-benzene with an aniline or mono-N-alkyl aniline, reducing the reaction product to a hydrazo compound and rearranging this to the benzidine compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.