Process for the preparation of 6-(arylcarbonyl)-4-oximo-dihydrobenzothiopyran herbicides and intermediates useful therein
US6294676A · kind A · utility
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6References
6Claims
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Key dates
| Filing date | Dec 15, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Dec 15, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D409/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides compounds of formula I and processes for the preparation and purification thereof. ##STR1## Compounds of formula I are useful as intermediates in the manufacture of 6-(arylcarbonyl)-4-oximino-dihydrobenzothiopyran herbicidal agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.