Process for preparing alkyl- and aryl phosphonothioic dihalides
US4000190A · kind A · utility
3Cited by
1References
4Claims
0Family size
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Key dates
| Filing date | Feb 10, 1975 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Feb 10, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N57/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkyl- and arylphosphonothioic dihalides are prepared by contacting a dialkyl or diaryl disulfide with phosphorus and phosphorus trihalide under at least autogenous pressure at a temperature of from about 200.degree. C. to about 400.degree. C. The compounds obtained are useful as constituents in insecticides, fungicides, pharmaceuticals and as intermediates in preparation of other organophosphorus compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.