Process for the production of azomethines and alpha-haloacetanilides
US5852215A · kind A · utility
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10Claims
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Key dates
| Filing date | Sep 19, 1996 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Sep 19, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C231/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Aromatic azomethines are produced by continuous reaction of an aniline with a formaldehyde source, with continuous evaporation to remove residual water of reaction. The azomethine product may be further reacted, either continuously or in batch process, with a haloacetylating agent, and, additionally, with an aliphatic alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.