Process for preparing alkyl- or arylphosphonothioic dihalides
US4130583A · kind A · utility
1Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1977 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | Feb 17, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N57/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkyl- or arylphosphonothioic dihalides are prepared by contacting a dialkyl or diaryl thioether with various phosphorus containing reactants including: PCl.sub.3, PBr.sub.3, P(S)Cl.sub.3, P(S)Br.sub.3, P.sub.4 S.sub.3, P.sub.4 S.sub.5, P.sub.4 S.sub.7, P.sub.4 S.sub.1 O and elemental phosphorus 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.