DE2118861A1 - Methanethionophosphonic acid esters - insecticides and acaricides - Google Patents
Methanethionophosphonic acid esters - insecticides and acaricidesInfo
- Publication number
- DE2118861A1 DE2118861A1 DE19712118861 DE2118861A DE2118861A1 DE 2118861 A1 DE2118861 A1 DE 2118861A1 DE 19712118861 DE19712118861 DE 19712118861 DE 2118861 A DE2118861 A DE 2118861A DE 2118861 A1 DE2118861 A1 DE 2118861A1
- Authority
- DE
- Germany
- Prior art keywords
- alkyl
- found
- calc
- acaricides
- insecticides
- 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.)
- Pending
Links
- 230000000895 acaricidal effect Effects 0.000 title abstract 2
- 239000000642 acaricide Substances 0.000 title abstract 2
- 239000002917 insecticide Substances 0.000 title abstract 2
- 239000002253 acid Substances 0.000 title description 2
- 150000002148 esters Chemical class 0.000 title description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229960000583 acetic acid Drugs 0.000 claims description 7
- 239000012362 glacial acetic acid Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical class [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- WXJXBKBJAKPJRN-UHFFFAOYSA-N Methanephosphonothioic acid Chemical class CP(O)(O)=S WXJXBKBJAKPJRN-UHFFFAOYSA-N 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 abstract description 4
- HRHKZXIMFUYRDS-UHFFFAOYSA-N dichloro-(chloromethyl)-sulfanylidene-$l^{5}-phosphane Chemical compound ClCP(Cl)(Cl)=S HRHKZXIMFUYRDS-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 229910052794 bromium Inorganic materials 0.000 abstract description 2
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 abstract description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 2
- 229910006074 SO2NH2 Inorganic materials 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 description 24
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 12
- -1 esters Compounds Chemical class 0.000 description 11
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- 238000012512 characterization method Methods 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- YGFPFLRARVYKBZ-UHFFFAOYSA-N 2,5-dichloro-4-methylsulfanylphenol Chemical compound CSC1=CC(Cl)=C(O)C=C1Cl YGFPFLRARVYKBZ-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 101100054666 Streptomyces halstedii sch3 gene Proteins 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000004644 alkyl sulfinyl group Chemical group 0.000 description 1
- 125000004390 alkyl sulfonyl group Chemical group 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 125000004397 aminosulfonyl group Chemical group NS(=O)(=O)* 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- CDPKWOKGVUHZFR-UHFFFAOYSA-N dichloro(methyl)phosphane Chemical compound CP(Cl)Cl CDPKWOKGVUHZFR-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- TXKSMBDQKVGNIZ-UHFFFAOYSA-M sodium;4-cyanophenolate Chemical compound [Na+].[O-]C1=CC=C(C#N)C=C1 TXKSMBDQKVGNIZ-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000004809 thin layer chromatography Methods 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
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/42—Halides thereof
- C07F9/425—Acid or estermonohalides thereof, e.g. RP(=X)(YR)(Hal) (X, Y = O, S; R = H, or hydrocarbon group)
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing aromatic radicals
-
- 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
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/40—Esters thereof
- C07F9/4003—Esters thereof the acid moiety containing a substituent or a structure which is considered as characteristic
- C07F9/4006—Esters of acyclic acids which can have further substituents on alkyl
-
- 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
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/40—Esters thereof
- C07F9/4071—Esters thereof the ester moiety containing a substituent or a structure which is considered as characteristic
- C07F9/4084—Esters with hydroxyaryl compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
Abstract
Description
Verfahren zur Herstellung von O-Alkyl-O-phenyl-methylthionophosphonsäureestern Verbindungen der allgemeinen Formel in der R1 einen niederen Alkylrest und R2 einen gegebenenfalls substituierten Phenylrest bedeutet, sind bekannt (vgl.Process for the preparation of O-alkyl-O-phenyl-methylthionophosphonic acid esters Compounds of the general formula in which R1 is a lower alkyl radical and R2 is an optionally substituted phenyl radical are known (cf.
Dt-PS 1044 812, 1078 124, 1099 530, 1124 034, 1228 101, 1193 036 und US-PS 3 253 061).Dt-PS 1044 812, 1078 124, 1099 530, 1124 034, 1228 101, 1193 036 and U.S. Patent 3,253,061).
Verbindungen dieses Typs sind - zum Teil hochwirksame -Schädlingsbekämpfungsmittel. Die Herstellung der Verbindungen im technischen Maßstab ist jedoch aufwendig, so daß ihre Verwendung für die Schädlingsbekämpfung keine größere praktische Bedeutung erlangt.hat. Letztlich beruhen die Schwierigkeiten darauf, daß die Verbindungen der Formel I gemäß dem Reaktionsschema ausgehend von Methyldichiorphosphin (a) hergestellt werden und dieser Ausgangsstoff technisch schlecht zugänglich ist.Compounds of this type are - in some cases highly effective - pesticides. However, the preparation of the compounds on an industrial scale is expensive, so that their use for pest control is not of any great practical importance. Ultimately, the difficulties are based on the fact that the compounds of formula I according to the reaction scheme be prepared starting from methyldichiorphosphine (a) and this starting material is technically difficult to access.
Beispielsweise werden laut Dt-AS 1 119 860 zur Herstellung von 141 g Methyldichlorphosphin 370 g Aluminiumchlorid zur Komplexbildung und 25 g Aluminiumspäne zur Reduktion benötigt. Die Reaktionstemperatur von 1800C bedingt zusätzlich eine erhebliche Beanspruchung der Reaktionsgefäße.For example, according to Dt-AS 1 119 860 for the production of 141 g methyldichlorophosphine 370 g aluminum chloride for complex formation and 25 g aluminum shavings needed for reduction. The reaction temperature of 1800C also requires a considerable stress on the reaction vessels.
Wie nun gefunden wurde, lassen sich die Verbindungen der Formel I überraschenderweise vorteilhaft gemäß folgendem Schema herstellen: Die Ausgangsverbindung (d) ist gut zugänglich und führt in an sich bekannter Weise zur Verbindung (g). Uberraschenderweise lassen sich Verbindungen dieser Art durch Zink/Eisessig mit sehr guter Ausbeute zu den entsprechenden Methylthionophosphonsäureestern reduzieren.As has now been found, the compounds of the formula I can surprisingly advantageously be prepared according to the following scheme: The starting compound (d) is readily accessible and leads to compound (g) in a manner known per se. Surprisingly, compounds of this type can be reduced to the corresponding methylthionophosphonic acid esters with zinc / glacial acetic acid in very good yield.
Die Reduktion wird so durchgeführt, daß man den geeigneten Chlormethylthionophosphonsäureester (g) in Eisessig löst und zu der Mischung in der Wärme, vorzugsweise bei etwa 50 bis 1000C Zinkstaub im überschub zugibt. Nach einigen Stunden ist die Reduktion beendet. Zur Isolierung des Esters wird nach dem Absaugen des überschüssigen Zinkstaubs der Eisessig abdestilliert und der Rückstand mit einem inerten Lösungsmittel (Benzol, Toluol, Äther, Chloroform) aufgenommen. Man wäscht die Lösung mit Wasser, trennt und trocknet die organische Phase. Nach dem Abdestillieren des Lösungsmittels bleibt der Methylthionophosphonsäureester praktisch rein zurück. Gewünschtenfalls kann nach üblichen Methoden eine weitere Reinigung erfolgen.The reduction is carried out in such a way that the suitable chloromethylthionophosphonic acid ester is used (g) dissolves in glacial acetic acid and to the mixture in the heat, preferably at about 50 to 1000C zinc dust is added in excess. After a few hours it is Reduction ended. To isolate the ester, the excess is filtered off with suction Zinc dust is distilled off the glacial acetic acid and the residue with an inert solvent (Benzene, toluene, ether, chloroform) added. The solution is washed with water, separates and dries the organic phase. After the solvent has been distilled off the methylthionophosphonic acid ester remains practically pure. If so desired further purification can be carried out by customary methods.
Soweit der Rest R2 für einen substituierten Phenylrest steht, dürfen selbstverständlich die Substituenten bei der Reduktion der Chlormethylgruppe nicht in nennenswertem Maß unerwünschte Veränderungen erleiden; erfindungsgemäß herstellbar sind beispielsweise diejenigen Verbindungen der Formel I, in denen R2 die Gruppe der Formel bedeutet, worin R3, R4 und R5, die gleich oder verschieden sein können, für Wasserstoff, Chlor, Brom, Jod, die Nitril-, Alkylthio-, Alkylsulfinyl-, Alkylsulfonyl- oder Carboalkoxygruppe stehen oder für eine Carbamyl- oder Sulfamylgruppe, die am Stickstoff mono- oder disubstituiert sein kann, vor allem durch Alkylgruppen.Insofar as the radical R2 stands for a substituted phenyl radical, the substituents must of course not undergo undesirable changes to any significant degree during the reduction of the chloromethyl group; According to the invention, for example, those compounds of the formula I in which R2 is the group of the formula denotes in which R3, R4 and R5, which can be the same or different, represent hydrogen, chlorine, bromine, iodine, the nitrile, alkylthio, alkylsulfinyl, alkylsulfonyl or carboalkoxy group or a carbamyl or sulfamyl group, which is on Nitrogen can be mono- or disubstituted, especially by alkyl groups.
Sofern die Reste R3, R4 und R5 Alkylgruppen darstellen oder enthalten, handelt es sich im allgemeinen um niedere bis mittlere Alkylgruppen, vorzugsweise um Methyl- oder auch um Äthyl- und Propylgruppen.If the radicals R3, R4 and R5 represent or contain alkyl groups, it is generally a matter of lower to medium alkyl groups, preferably around methyl or also around ethyl and propyl groups.
Das erfindungsgemäße Verfahren ist in den nachstehenden Beispielen
näher erläutert: Beispiel 1: O-Äthyl-O-(4-cyanophenyl)-methylthionophosphonat a)
O-Äthyl=chlormethylthionphosphonsäurechlorid Zu einer, Lösung von 92 a Chlormethylthionophosphonsäure-
b) O-Äthyl-O-(4-cyanophenyl)-chlormethylthionophosphonsäure ester Zu 28,2 g Natrium-4-cyanophenolat in 50 ml Methylisobutylketon werden bei Raumtemperatur 38,6 g des gemäß la) erhaltenen Säurechlorids getropft. Man läßt 2 Stunden bei 80 0C nachreagieren, filtriert und destilliert das Lösungsmittel im Vakuum ab. Der Rückstand wird in Methylenchlorid aufgenommen, mit Sodalösung ausgeschüttelt und getrocknet. Nach Entfernen des Lösungsmittels im Vakuum erhält man den Chlormethylester in einer Ausbeute von 94 % d.Th.b) O-ethyl-O- (4-cyanophenyl) -chloromethylthionophosphonic acid ester To 28.2 g of sodium 4-cyanophenolate in 50 ml of methyl isobutyl ketone are added at room temperature 38.6 g of the acid chloride obtained according to la) were added dropwise. It is left at 80 for 2 hours React 0C, filtered and the solvent is distilled off in vacuo. Of the The residue is taken up in methylene chloride, extracted with soda solution and dried. After removing the solvent in vacuo, the chloromethyl ester is obtained in a yield of 94% of theory
c) Reduktion zum Endprodukt 27,5 g des gemäß lb) erhaltenen Chlormethylesters werden in 50 ml Eisessig mit 8 g Zinkstaub nach und nach versetzt. Man rührt die Mischung 5 Stunden bei 85-900C, filtriert und destilliert den Eisessig im Vakuum ab.c) Reduction to the end product 27.5 g of the chloromethyl ester obtained in accordance with lb) 8 g of zinc dust are gradually added to 50 ml of glacial acetic acid. One stirs them Mix for 5 hours at 85-900C, filtered and distilled the glacial acetic acid in a vacuum.
Der Rückstand wird in Methylenchlorid aufgenommen, mit Wasser gewaschen und die organische Phase mit Natriumsulfat getrocknet. Durch Abdestillieren des Ldsungs mittels erhält man O-Äthyl-O-( 4-cyanophenyl) -methylthionophosphonat in einer Ausbeute von 95,5 , d.Th. The residue is taken up in methylene chloride and washed with water and the organic phase is dried with sodium sulfate. By distilling off the Solution means one obtains O-ethyl-O- (4-cyanophenyl) -methylthionophosphonate in a yield of 95.5, i.e.
i°: 1,5558; Praktisch das gleiche Ergebnis wird erhalten, wenn man die Reduktion bei 95 bis 1000C durchführt. i °: 1.5558; Virtually the same result is obtained if one the reduction is carried out at 95 to 1000C.
Beispiel 2: 0-Athyl-0-(2.5-dichlor-4-methylmercaptophenyl)-methylthionophosphonat a) O-Äthyl-O-(2,5-dichlor-4-methylmercaptophenyl-chlormethylthionophosphonat Man legt 96,5 g des gemäß 1a) erhaltenen Säurechlorids und 104,5 g 2,5-Dichlor-4-methylmercaptophenol vor, tropft 50 g 40%ige Natronlauge ein, wobei die Temperatur 50°C nicht überschreiten soll, und erwärmt anschließend langsam bis 750C. Nach einer Stunde wird das Reaktionsgemisch mit 200 ml Methylenchlorid verdünnt und mit 5%iger Sodalösung ausgerAhrt, Nach dem Trocknen wird die organische Phase im Vakuum eingeengt, Ausbeute 162 g (98% d.Th.).Example 2: 0-Ethyl-0- (2.5-dichloro-4-methylmercaptophenyl) -methylthionophosphonate a) O-ethyl-O- (2,5-dichloro-4-methylmercaptophenyl-chloromethylthionophosphonate Man puts 96.5 g of the acid chloride obtained according to 1a) and 104.5 g of 2,5-dichloro-4-methylmercaptophenol before, drop in 50 g of 40% sodium hydroxide solution, the temperature not exceeding 50 ° C should, and then slowly heats up to 750C. After one hour the reaction mixture is diluted with 200 ml of methylene chloride and treated with 5% soda solution Drying, the organic phase is concentrated in vacuo, yield 162 g (98% of theory).
Gehalt an aliphat. gebundenem Chlor: berechnet 10,72 ,; gefunden 1Q,8 9'. Aliphatic content. combined chlorine: calculated 10.72; found 1Q, 8 9 '.
b) Reduktion zum Endprodukt Durch Reduktion von 36,6 g der gemäß 2a) erhaltenen Chlormethylverbindung in 50 ml Eisessig mit 8 g Zinkstaub bei 90 bis 95 0C erhält man analog Beispiel lc) 0-Äthyl-0-(2,5-dichlor-4-methylmercaptophenyl)-methylthionophosphonat in einer Ausbeute von 97 « d.Th. Fp. 43-44°C, Analyse: Cl ber.: 21,42 9'; Cl gef.: 21,7 %.b) Reduction to the end product By reducing 36.6 g of the according to 2a) obtained chloromethyl compound in 50 ml of glacial acetic acid with 8 g of zinc dust at 90 to 95 ° C. is obtained analogously to example lc) 0-ethyl-0- (2,5-dichloro-4-methylmercaptophenyl) -methylthionophosphonate in a yield of 97% of theory M.p. 43-44 ° C, Analysis: Cl ber .: 21.42 9 '; Cl found: 21.7%.
Soll die Reduktion bei 50-600C durchgeführt werden, so wird die Reaktionszeit verlängert. If the reduction is to be carried out at 50-600C, the reaction time becomes extended.
In der folgenden Tabelle sind weitere erfindungsgemäß herstellbare
Verbindungen aufgeführt:
Claims (2)
Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712118861 DE2118861A1 (en) | 1971-04-19 | 1971-04-19 | Methanethionophosphonic acid esters - insecticides and acaricides |
DK188172AA DK130985B (en) | 1971-04-19 | 1972-01-18 | Process for the preparation of methanthionophosphonic acid esters. |
CS2488A CS173594B2 (en) | 1971-04-19 | 1972-04-13 | |
CH554872A CH574969A5 (en) | 1971-04-19 | 1972-04-14 | |
IL39249A IL39249A (en) | 1971-04-19 | 1972-04-16 | The preparation of methylthionophosphonic acid esters |
ES401838A ES401838A1 (en) | 1971-04-19 | 1972-04-17 | Process for the preparation of methylthionophosphonates |
HUBO1364A HU164576B (en) | 1971-04-19 | 1972-04-17 | |
NL7205127A NL7205127A (en) | 1971-04-19 | 1972-04-17 | |
CA139,899A CA997364A (en) | 1971-04-19 | 1972-04-18 | Methylthionophosphonic acid esters |
US00245179A US3794700A (en) | 1971-04-19 | 1972-04-18 | Process for the preparation of methylthionophosphonates |
IT49713/72A IT957638B (en) | 1971-04-19 | 1972-04-18 | PROCEDURE FOR THE PRODUCTION OF METHANTIOUS OR PHOSPHONIC ACID ESTERS |
GB1795472A GB1390556A (en) | 1971-04-19 | 1972-04-18 | Process for the preparation of methyl thionophosphonic acid esters |
DD162372A DD99381A5 (en) | 1971-04-19 | 1972-04-18 | |
FR7213867A FR2133916B1 (en) | 1971-04-19 | 1972-04-19 | |
BE782334A BE782334A (en) | 1971-04-19 | 1972-04-19 | METHOD FOR MANUFACTURING ESTERS OF METHANETHIONOPHOSPHONIC ACID |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712118861 DE2118861A1 (en) | 1971-04-19 | 1971-04-19 | Methanethionophosphonic acid esters - insecticides and acaricides |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2118861A1 true DE2118861A1 (en) | 1972-11-09 |
Family
ID=5805100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712118861 Pending DE2118861A1 (en) | 1971-04-19 | 1971-04-19 | Methanethionophosphonic acid esters - insecticides and acaricides |
Country Status (1)
Country | Link |
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DE (1) | DE2118861A1 (en) |
-
1971
- 1971-04-19 DE DE19712118861 patent/DE2118861A1/en active Pending
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