ES469180A1 - Procedure for the preparation of a herbicide derived from piridine. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the preparation of a herbicide derived from piridine. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES469180A1 ES469180A1 ES469180A ES469180A ES469180A1 ES 469180 A1 ES469180 A1 ES 469180A1 ES 469180 A ES469180 A ES 469180A ES 469180 A ES469180 A ES 469180A ES 469180 A1 ES469180 A1 ES 469180A1
- Authority
- ES
- Spain
- Prior art keywords
- temperature
- translation
- pyridine
- preparation
- machine
- 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
- Pyridine Compounds (AREA)
Abstract
Process for the preparation of a herbicide derived from pyridine, specifically one containing as active ingredient 1,1-dimethyl-4,4-dipyridyl dimethyl sulfate, of structural formula: ** (see formula) ** Characterized in that the active principle is obtained by sequentially carrying out the following steps: slowly reacting pyridine and sodium at room temperature or lower, until the reaction is completed, heating, finally, up to 115º c; then oxidize by dry oxygen maintaining the temperature of the mixture at 80º c; distilling off unreacted pyridine by distillation; wash the residue with water at 0º c; and, finally, separating the formed bipyridyl crystals, recrystallizing them in water and then reacting them with dimethyl sulphate, added slowly, so that the temperature gradually rises to 95ºC and the ph reaches the value 5, then cooling to 80ºC to continue the addition of dimethyl sulfate, maintaining the temperature at 80º c, until reaching a ph comprised between 3 and 3.5. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES469180A ES469180A1 (en) | 1978-04-26 | 1978-04-26 | Procedure for the preparation of a herbicide derived from piridine. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES469180A ES469180A1 (en) | 1978-04-26 | 1978-04-26 | Procedure for the preparation of a herbicide derived from piridine. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
Publication Number | Publication Date |
---|---|
ES469180A1 true ES469180A1 (en) | 1978-10-16 |
Family
ID=8475931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES469180A Expired ES469180A1 (en) | 1978-04-26 | 1978-04-26 | Procedure for the preparation of a herbicide derived from piridine. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES469180A1 (en) |
-
1978
- 1978-04-26 ES ES469180A patent/ES469180A1/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54148788A (en) | 1,2-disubstituted-4-halogenoimidazole-5-acetic acid derivative and its preparation | |
ATE67497T1 (en) | PROCESS FOR THE PREPARATION OF THIAZOLIDINEDIONE DERIVATIVES. | |
JPS5721338A (en) | Conjugation of polyunsaturated fatty acid and fatty acid mixture | |
DE3751478D1 (en) | METHOD OF PRODUCING A VISCOSITY-STABLE ANTI-ACID COMPOSITION. | |
KR850008678A (en) | Method for preparing 2-amino-3-ethoxycarbonylamino-6-cP-fluoro-benzylamino) -pyridine gluconate | |
SE7703617L (en) | PROCEDURE FOR THE PREPARATION OF 2-CHLORICICOTIC ACID | |
ES469180A1 (en) | Procedure for the preparation of a herbicide derived from piridine. (Machine-translation by Google Translate, not legally binding) | |
JPS6440467A (en) | Novel substituted diphenylimidazole derivative | |
KR100214903B1 (en) | Process for producing aminomethanephosphonic acid and aminomethylphosphinic acids | |
ES449817A1 (en) | Substituted 2-phenylimino-thiazolines a process for their preparation and their use as ectoparasiticides | |
DK246479A (en) | STEROID SYNTHESIS USING MIXED ANHYDRID | |
GB986579A (en) | 5-ethylidene dibenzocycloheptadienes and the preparation thereof | |
ATE25242T1 (en) | PROCESS FOR PHLEGMATIZING WATER-INSOLUBLE PEROXYCARBONIC ACIDS. | |
ATE17573T1 (en) | PROCESS FOR PRODUCTION OF PURE DIACETONITRILE. | |
JPS5513214A (en) | Vitamin e sulfate and its preparation | |
JPS5695165A (en) | Preparation of substituted benzoic acid amide | |
GB1505610A (en) | Process for preparing 3,4-dicyano-1,2,5-thiadiazole | |
SU133871A1 (en) | Method for producing alpha-alkyl- and alpha-aryl-beta-alkoxyacroleins | |
JPS5481264A (en) | Preparation of 1-methyl-5-aroylpryrrole-2-acetic acid | |
JPS5581861A (en) | Nicotinamide derivative | |
GB1001704A (en) | Process for the production of water soluble derivatives of ªÐ-amino-salicylic acid | |
JPS5547673A (en) | Novel pyrone derivative | |
JPS5794003A (en) | Perfluorocarbon polymer and its production | |
JPS56142270A (en) | Preparation of guanidine derivative | |
JPS55136279A (en) | Preparation of tryptophan hydantoin |