Preparation of 2,4,6-trichlorophenylhydrazine
US4772747A · kind A · utility
1Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1983 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Oct 28, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for the preparation of 2,4,6-trichlorophenylhydrazine by chlorinating the reaction product of phenylhydrazine and a dicarboxylic anhydride to obtain an N-(2,4,6-trichloroanilino)dicarboximide which is reacted with a base capable of liberating 2,4,6-trichlorophenylhydrazine therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.