Claims
- 1. The process for the manufacture of substituted thianthrene compounds wherein a substituted thianthrene compound is separated from a substituted thianthrene compound-aluminum chloride complex by admixing the complex with an inert organic liquid solvent for the substituted thianthrene compound to form a slurry therewith, and treating the slurry with a Lewis base to free the substituted thianthrene compound from the complex, and dissolving the substituted thianthrene compound in the organic liquid.
- 2. A process according to claim 1 wherein the Lewis base is ammonia.
- 3. A process according to claim 1 wherein the Lewis base is diethylamine.
- 4. A process according to claim 1 wherein the Lewis base is pyridine.
- 5. A process according to claim 1 where in the substituted thianthrene compound is dimethyldichlorothianthrene.
- 6. A process according to claim 5 wherein the Lewis base is ammonia.
- 7. A process according to claim 1 wherein the organic liquid solvent is monochlorotoluene.
- 8. A process according to claim 1 wherein the organic liquid solvent is chloroform.
- 9. A process according to claim 1 wherein the substituted thianthrene compound-aluminum chloride complex is prepared by adding sulfur monochloride to a benzene compound in the presence of aluminum chloride.
- 10. A process according to claim 9 wherein the benzene compound is orthochlorotoluene and the substituted thianthrene compound is dimethyldichlorothianthrene.
Parent Case Info
This application is a continuation-in-part of U.S. Pat. application Ser. No. 521,108, filed Nov. 5, 1974, now U.S. Pat. No. 3,997,560, issued Dec. 14, 1976.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3997560 |
Buckholtz et al. |
Dec 1976 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
521108 |
Nov 1974 |
|