GB244070A - Process for the preparation of di-substituted thio-ureas of symmetrical structure - Google Patents
Process for the preparation of di-substituted thio-ureas of symmetrical structureInfo
- Publication number
- GB244070A GB244070A GB28656/25A GB2865625A GB244070A GB 244070 A GB244070 A GB 244070A GB 28656/25 A GB28656/25 A GB 28656/25A GB 2865625 A GB2865625 A GB 2865625A GB 244070 A GB244070 A GB 244070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon disulphide
- preparation
- diphenylthiourea
- amine
- aromatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C335/00—Thioureas, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C335/04—Derivatives of thiourea
- C07C335/16—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
Abstract
Aromatic symmetrically-disubstituted thioureas are prepared by the interaction of an aromatic amine with such quantities of carbon disulphide and aqueous alkali solution that a trithiocarbonate is simultaneously formed. This necessitates the use of practically equimolecular quantities of amine, carbon disulphide and alkali. The reaction is preferably effected in a closed vessel, when the heat evolved may be sufficient to effect the conversion. An example is given of the preparation of diphenylthiourea by shaking aniline with caustic soda solution and carbon disulphide in stated proportions; after the exothermic reaction is over, the diphenylthiourea is filtered off and purified, leaving the sodium trithiocarbonate in the red filtrate.ALSO:Trithiocarbonates are obtained as by-products in the preparation of aromatic symmetrically-di-substituted thioureas by the interaction of an aromatic amine with carbon disulphide and aqueous alkali solution, the amine, carbon disulphide and alkali being in practically equimolecular proportions. The reaction is preferably effected in a closed vessel, when the heat evolved may be sufficient to effect the conversion. An example is given of the preparation of diphenylthiourea by shaking aniline with caustic soda solution and carbon disulphide in stated proportions; after the exothermic reaction is over, the diphenylthiourea is filtered off and purified, leaving the sodium trithiocarbonate in the red filtrate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE244070X | 1924-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB244070A true GB244070A (en) | 1926-07-15 |
Family
ID=5924023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28656/25A Expired GB244070A (en) | 1924-12-06 | 1925-11-13 | Process for the preparation of di-substituted thio-ureas of symmetrical structure |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB244070A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130694A (en) * | 2013-01-23 | 2013-06-05 | 安徽工程大学 | Synthetic method of phenylthiocarbamide |
-
1925
- 1925-11-13 GB GB28656/25A patent/GB244070A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103130694A (en) * | 2013-01-23 | 2013-06-05 | 安徽工程大学 | Synthetic method of phenylthiocarbamide |
| CN103130694B (en) * | 2013-01-23 | 2014-11-12 | 安徽工程大学 | Synthetic method of phenylthiocarbamide |
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