CH300748A - Process for producing a phosphoric acid ester. - Google Patents
Process for producing a phosphoric acid ester.Info
- Publication number
- CH300748A CH300748A CH300748DA CH300748A CH 300748 A CH300748 A CH 300748A CH 300748D A CH300748D A CH 300748DA CH 300748 A CH300748 A CH 300748A
- Authority
- CH
- Switzerland
- Prior art keywords
- phosphoric acid
- acid ester
- producing
- compound
- formula
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 150000003014 phosphoric acid esters Chemical class 0.000 title claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical group BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052794 bromium Chemical group 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 2
- KMJJJTCKNZYTEY-UHFFFAOYSA-N chloro-diethoxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCOP(Cl)(=S)OCC KMJJJTCKNZYTEY-UHFFFAOYSA-N 0.000 claims description 2
- 150000001447 alkali salts Chemical class 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UBQKCCHYAOITMY-UHFFFAOYSA-N 2-hydroxy-pyridine Natural products OC1=CC=CC=N1 UBQKCCHYAOITMY-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PKUWKAXTAVNIJR-UHFFFAOYSA-N O,O-diethyl hydrogen thiophosphate Chemical compound CCOP(O)(=S)OCC PKUWKAXTAVNIJR-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229960005382 phenolphthalein Drugs 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/553—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having one nitrogen atom as the only ring hetero atom
- C07F9/576—Six-membered rings
- C07F9/58—Pyridine rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
Description
Verfahren zur Herstellung eines Phosphorsäureesters. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Phos- phorsäureesters. Das Verfahren ist dadurch gekennzeichnet, dass man eine Verbindung der Formel
EMI0001.0005
worin X Chlor oder Brom bedeutet, mit einer Verbindung der Formel
EMI0001.0007
worin Y einen im Verlaufe des Verfahrens sich abspaltenden Rest, wie Wasserstoff oder ein Kation, bedeutet, umsetzt.
Die erhaltene neue Verbindung, der Thio- phosphorsäure-pyridyl-(2)-diäthylester, stellt eine leicht gefärbte Flüssigkeit dar, die sich nicht unzersetzt destillieren lässt.
Sie soll als Wirksubstanz für Schädlings bekämpfungsmittel Verwendung finden. Beispiel: 95 Teile 2-Oxy-pyridin werden mit 138 Tei len Kaliumcarbonat und 2000 Teilen Benzol versetzt und unter Rühren zum Sieden erhitzt. Dabei wird das bei der Enolatbildiing- freiwerdende Wasser mit Benzol azeotrop ab destilliert.
Sobald sich im Destillat kein Was ser mehr abscheidet, wird auf 60 bis 70 ab- gekühlt, 190 Teile Diäthylthiophosphorsäiue- chlorid zugetropft und anschliessend 10 Stun den unter Rückfluss gekocht. Nach dem Er kalten wird der Reaktionsmischung unter gu tem Rühren so lange Kaliumcarbonatlösung zugesetzt, bis die wässrige Schicht Phenol phthaleinpapier eben rot anfärbt.
Nach' Ab trennen der wässrigen Schicht wird das Lö sungsmittel abdestilliert. Es bleibt der Thio- phosphorsäure-pyridyl- (2)--diäthylester als schwach gefärbte Flüssigkeit zurück, der sich nicht unzersetzt destillieren lässt.
Process for producing a phosphoric acid ester. The present patent relates to a process for the production of a phosphoric acid ester. The process is characterized in that a compound of the formula
EMI0001.0005
wherein X is chlorine or bromine, with a compound of the formula
EMI0001.0007
where Y is a radical which is split off in the course of the process, such as hydrogen or a cation.
The new compound obtained, pyridyl (2) diethyl thiophosphorate, is a slightly colored liquid which cannot be distilled without decomposition.
It should be used as an active ingredient for pesticides. Example: 95 parts of 2-oxy-pyridine are mixed with 138 parts of potassium carbonate and 2000 parts of benzene and heated to the boil with stirring. The water released during enolate formation is azeotropically distilled off with benzene.
As soon as no more water separates out in the distillate, the mixture is cooled to 60 to 70, 190 parts of diethylthiophosphoric acid chloride are added dropwise and the mixture is then refluxed for 10 hours. After it has cooled down, potassium carbonate solution is added to the reaction mixture with good stirring until the aqueous layer of phenol phthalein paper just stains red.
After separating the aqueous layer, the solvent is distilled off. The thiophosphoric acid pyridyl (2) diethyl ester remains as a weakly colored liquid which cannot be distilled without decomposition.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH300748T | 1951-04-20 | ||
| CH294598T | 1951-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH300748A true CH300748A (en) | 1954-08-15 |
Family
ID=25733509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH300748D CH300748A (en) | 1951-04-20 | 1951-04-20 | Process for producing a phosphoric acid ester. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH300748A (en) |
-
1951
- 1951-04-20 CH CH300748D patent/CH300748A/en unknown
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