Pyridinium salts
US3944557A · kind A · utility
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8Claims
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Assignee
Inventor
Key dates
| Filing date | Sep 11, 1973 |
| Grant date | Mar 16, 1976 |
| Priority date | — |
| Expiry date | Sep 11, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/85
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The compounds of the invention are of the class of 2-amino-4-substituted amino-5-cyano pyridinium salts, useful as fungicidal agents. The preparation of these salts by reaction of an N-substituted cyano acetamide with a phosphorous halide or oxyhalide is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.