Process for the preparation of aniline compounds
US6657085B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Nov 15, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Nov 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/365
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of aniline compounds of formula: whereinn and R are as defined in claim 1, by reacting nitro compounds of formula: wherein n and R are as defined, with hydrazine at elevated temperature in the presence of an aqueous base.The compounds of formula I are suitable as intermediates in the preparation of herbicides of the isobenzofuranone type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.