Process for the manufacture of substituted thianthrene based products
US4091031A · kind A · utility
1Cited by
1References
10Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 1, 1976 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Nov 1, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D339/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Thianthrene compounds are prepared by adding sulfur monochloride to an excess of a benzene compound in the presence of aluminum chloride, and reacting to form a thianthrene compound as an insoluble aluminum chloride complex; slurrying the complex in an inert organic liquid; treating the slurry with a Lewis base, such as ammonia to free the thianthrene compound from the complex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.