GB702016A - Manufacture of a stable preparation of the molecular compound of 4-dimethylamino-1-phenyl-2:3-dimethyl-5-pyrazolone and butyl-chloral hydrate - Google Patents
Manufacture of a stable preparation of the molecular compound of 4-dimethylamino-1-phenyl-2:3-dimethyl-5-pyrazolone and butyl-chloral hydrateInfo
- Publication number
- GB702016A GB702016A GB27839/51A GB2783951A GB702016A GB 702016 A GB702016 A GB 702016A GB 27839/51 A GB27839/51 A GB 27839/51A GB 2783951 A GB2783951 A GB 2783951A GB 702016 A GB702016 A GB 702016A
- Authority
- GB
- United Kingdom
- Prior art keywords
- molecular compound
- pyrazolone
- dimethylamino
- dimethyl
- phenyl
- 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
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
A stable preparation of the molecular compound of 4-dimethylamino-1-phenyl-2.3-dimethyl-5-pyrazolone and butyl-chloral hydrate is prepared by adding trisodium phosphate or hexamethylene tetramine as a stabilizing agent to the molecular compound during or after its manufacture from the components. The stabilized compound may be prepared by reacting butyl-chloral hydrate at a temperature of 30-35 DEG C. with 4-dimethylamino-1-phenyl-2 : 3-dimethyl-5-pyrazolone in the presence of a solvent and with the addition of 1-2 per cent. of the stabilizing agent. If desired, the stabilizing agent may be added to the finished molecular compound. Preferably the butyl-chloral hydrate contains less than 0.1 per cent. of free hydrochloric acid. In the examples the molecular compound of 4-dimethylamino-1-phenyl-2 : 3-dimethyl-5-pyrazolone and butylchloral hydrate is stabilized by the addition of hexamethylene tetramine (a) during the preparation of the compound and (b) after separating the molecular compound. Specification 15782/03 , [Class 2], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE702016X | 1950-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB702016A true GB702016A (en) | 1954-01-06 |
Family
ID=6611981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27839/51A Expired GB702016A (en) | 1950-11-27 | 1951-11-27 | Manufacture of a stable preparation of the molecular compound of 4-dimethylamino-1-phenyl-2:3-dimethyl-5-pyrazolone and butyl-chloral hydrate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB702016A (en) |
-
1951
- 1951-11-27 GB GB27839/51A patent/GB702016A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB702016A (en) | Manufacture of a stable preparation of the molecular compound of 4-dimethylamino-1-phenyl-2:3-dimethyl-5-pyrazolone and butyl-chloral hydrate | |
| GB1412240A (en) | Process for the preparation of 3- o,o-diethyldithiophosphorylmethyl -6-chlorobenzoxazolone | |
| GB607445A (en) | A process for the manufacture of zinc peroxide | |
| US2020655A (en) | Purified neoarsphenamine and process of preparing the same | |
| GB669220A (en) | Manufacture of 4-nitro-1-aminonaphthalene-5-sulphonic acid | |
| GB740130A (en) | Derivatives of 4-cyclohexyl-cyclohexanone and process for the manufacture thereof | |
| GB616454A (en) | Improvements in or relating to the preparation of basic lead salts of 2:4 dinitro resorcinol | |
| GB616456A (en) | Improvements in or relating to the production of normal lead dinitroresorcinate | |
| GB669016A (en) | N-benzhydryl-n-acyl-ureas and process for the manufacture of same | |
| GB956974A (en) | A pure, stable 4-epitetracycline compound and process for its manufacture | |
| ES200908A1 (en) | Salts of hydroxyglutaconic aldehyde dianils | |
| GB624120A (en) | Process for the production of zirconium and hafnium compounds | |
| GB785104A (en) | Powdered synthetic tanning agents | |
| GB641703A (en) | Manufacture of unpolymerized urea-formaldehyde reaction products | |
| GB669585A (en) | Process for the manufacture of 2-amino-4-methyl-pyrimidine and n-alkyl and n-aryl derivatives thereof | |
| GB652457A (en) | Improvements in a method of manufacturing latex articles and articles obtained thereby | |
| GB920139A (en) | Preparation of 2-furfurylmercaptopyridine-1-oxides | |
| GB694490A (en) | Improved process for preparing 4,6,2:4,6-hexanitrodiphenylamine | |
| GB608835A (en) | Polystyrene composition and methods of making the same | |
| GB785022A (en) | Manufacture of cyclo-alkanone-oximes | |
| GB712065A (en) | Method for obtaining organic sulfur compounds | |
| GB581948A (en) | Improved hypochlorite composition | |
| GB720166A (en) | Method of preparing the tri-p-aminosalicylate of dihydrostreptomycin | |
| GB590941A (en) | Improvements in or relating to the production of alginates | |
| GB989597A (en) | Improved process for the preparation of -caprolactam by nitrosylating cyclohexyl compounds in the presence of nitric acid |