US2910500A - Phenyl sulfoxy and lower alkyl sulfoxy o, o-di (lower alkyl) thiophosphate esters and process for preparation - Google Patents

Phenyl sulfoxy and lower alkyl sulfoxy o, o-di (lower alkyl) thiophosphate esters and process for preparation Download PDF

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US2910500A
US2910500A US696029A US69602957A US2910500A US 2910500 A US2910500 A US 2910500A US 696029 A US696029 A US 696029A US 69602957 A US69602957 A US 69602957A US 2910500 A US2910500 A US 2910500A
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grams
lower alkyl
sulfoxy
benzene
millilitres
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Schrader Gerhard
Lorenz Walter
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Bayer AG
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Bayer AG
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION 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
    • A01N57/00Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/10Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/06Phosphorus compounds without P—C bonds
    • C07F9/16Esters of thiophosphoric acids or thiophosphorous acids
    • C07F9/165Esters of thiophosphoric acids
    • C07F9/1654Compounds containing the structure P(=X)n-X-acyl, P(=X)n-X-heteroatom, P(=X)n-X-CN (X = O, S, Se; n = 0, 1)
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/06Phosphorus compounds without P—C bonds
    • C07F9/16Esters of thiophosphoric acids or thiophosphorous acids
    • C07F9/165Esters of thiophosphoric acids
    • C07F9/18Esters of thiophosphoric acids with hydroxyaryl compounds

Definitions

  • the present invention relates to and has as its objects new and useful phosphoric acid esters, which may be represented by the following formula in which R stands for alkyl and aryl radicals, R and R stand for alkyl radicals especially lower alkyl radicals up to 4 carbon atoms, and X is oxygen or sulfur.
  • R stands for alkyl radicals, such as methyl, ethyl, propyl (n-propyl or isopropyl), nbutyl, isobutyl, tert. butyl, or aryl radicals, such as phenyl, 0-, mor p-tolyl, 0-, mor p-chloro phenyl, nitrophenyl, methoxyphenyl, p-chloro-m-nitrophenyl, p-nitro m-chloro phenyl, and the like.
  • esters of the above shown formula may be obtained by various methods.
  • tag. the phosphoric acid esters of the above shown formula these are those esters in which X of the above shown formula stands for oxygen, may be obtained by reacting the corresponding aliphatic or aromatic sulfinic acids or their salts with 0.0-dia1kyl phosphorous acid halides. This reaction may be seen from the following scheme, using sodium benzene sulfinate and 0.0-diethyl phosphorous acid chloride as reaction components:
  • the free acids may be used in combination with suitable organic acid binding agents, suchas tert. amines, e.g. pyridine.
  • suitable organic acid binding agents such as tert. amines, e.g. pyridine.
  • This reaction generally should be carried out in the presence of inert solvents, such as methanol,
  • reaction furthermore may be carried out at temperatures from about 0 to' 0., especially suitable are slightly elevated temperatures between 40 to 60 C.
  • reaction action also should be carried out usually in the presence of inert organic solvents, such as especially benzene, toluene, lower saturated liquid hydrocarbons (benzine or ligroine) or chlorinated aliphatic hydrocarbons, such as methylene chloride, ethylene chloride, chloroform, and the like.
  • inert organic solvents such as especially benzene, toluene, lower saturated liquid hydrocarbons (benzine or ligroine) or chlorinated aliphatic hydrocarbons, such as methylene chloride, ethylene chloride, chloroform, and the like.
  • inert organic solvents such as especially benzene, toluene, lower saturated liquid hydrocarbons (benzine or ligroine) or chlorinated aliphatic hydrocarbons, such as methylene chloride, ethylene chloride, chloroform, and the like.
  • This reaction may be carried out also between about 0 to 100 C., but especially suitable in this case are temperatures somewhat lower than room
  • the aforementioned method also may successfully be used for the preparation of corresponding thiophosphoric acid esters.
  • These are compounds of the above shown formula in whic X is sulfur.
  • corresponding trialk'yl monothiophosphites or dialkyl monothiophosphites may be used instead of trialkyl phosphites.
  • This reaction may be shown by the following scheme, using ethyl sulfinic acid chloride and diethyl thiolphosphite as starting materials:
  • the compounds of the present invention are generally valuable insecticides especially systematically active insecticides and kill effectively insects such as flies, aphids, mites and the like.
  • a special advantage of the inventive compounds is their activity against sucking insects, such as caterpillars. Usuallythey are to be applied in the same manner as other well known phosphorus containing insecticides, i.e. in concentrations from about 0.0001 to about 1% in dilution with liquid or solid carriers.
  • liquid carriers examples include water, alcohols,
  • the benzenic solution is washed twice with 50 millilitres of water, whereupon the benzenic layer is dried over unhydrous sodium sulfate.
  • the benzene is distilled off in vacuo. A small amount of impurities crystallizes and can be removed by freezing and filtration. The remaining oil is distilled in vacuo at 85 to 86 C. There are obtained 100 grams ofthe above shown ester as slightly yellowish colored Water-unsoluble oil.
  • LD rat per os 10 rug/kg.
  • Example 2 45 grams of p-chloro-benzene sulfinic acid are dissolved in 100 millilitres of methyl ethyl ketone. There are added while stirring 21 grams of pyridine and 40 grams of diethyl phosphorous acid monochloride are dropped into this solution at a temperature of 35 C. The temperature is kept at 40 C. for half an hour and the reaction mixture then is cooled to room temperature. The reaction mixture is poured into 200 millilitres of ice-water and the oil is taken up in 200 millilitres of benzene. The benzene layer is separated, washed twice with 50 millilitres of water and dried over sodium sulfate. After distilling ofi? the solvent there are obtained 35 grams of the above ester boiling at 0.01 mm. at 108 to 110 C. 0.1% solutions exhibit complete systemic action on black bean aphids and spider mites and also kill caterpillars effectively.
  • Example 4 O OCzH O O CgH 36 grams of benzene sulfinic acid are dissolved in 100 millilitres of methyl ethyl ketone; 21 grams of pyridine are added. While stirring there are dropped into this solution at 50 C. 43 grams of diethyl phosphorus acid monochloride dissolved in 44 millilitres of toluene. The reaction mixture is kept at 65 C. for 1 further hour, and worked up as described in the foregoing examples. There are obtained 30 grams of the new ester of the above shown formula.
  • Example 6 36 grams (0.85 mole) of p-chloro-benzene sulfinic acid chloride are dissolved in 50 millilitres of benzene, and treated dropwise while cooling at 15 to 25 C. into a solution of 46 grams (0.37 mole) of trimethyl phosphite in 150 millilitres of benzene. After the addition has been completed the mixture is stirred for a short period of time and the solvent then is removed by distillation. The remaining oily residue is stirred half an hour with water, and the aqueous layer is neutralized with diluted potassium carbonate solution.
  • Example 7 A solution of 48.5 grams (0.25 mole) of p-chloro-benzene sulfinic acid chloride in 50 millilitres of benzene is added dropwise while cooling to to C. to a solution of 49.8 grams (0.3 mole) of triethyl phosphite in 75 millilitres of benzene. After the addition has been completed the reaction mixture is stirred for further half an hour. The solvent then is distilled Off and the remainder is washed with water and neutralized with a diluted potassium carbonate solution. The remaining oil is taken up in benzene, washed twice with water, dried over sodium sulfate and at last the benzene is distilled 01f.
  • ester may be obtained by using 42 grams of diethyl phosphite instead of 49.8 grams of triethyl phosphite.
  • the working up procedure is the same as shown above.
  • the yield is slightly higher, it amounts up to about 56% of the theoretical.
  • Example 8 39 grams of p-chloro-benzene sulfinic acid chloride are dissolved in 200 millilitres of petrol ether (boiling point about 60 C.). At a temperature of 20 to C. this solution is added dropwise while cooling to 47 grams (0.3 mole) of diethyl thiolphosphite. After the addition has been completed the reaction mixture is stirred for further 10 minutes. 100 millilitres of water are added. The layers are separated again and this procedure is continued, until the organic layer reacts neutrally.
  • Example 9 49.5 grams (0.25 mole) of p-chloro-benzene sulfinic acid chloride are dissolved in 50 millilitres of benzene, and this solution is dropped while cooling at 10 to 20 C. Into a solution of 63 grams (0.3 mole) of triisopropyl phosphite in 200 millilitres of benzene. After the reaction has been completed the mixture is stirred for further half an hour and the solvent then is distilled off. The remaining oil is washed with water and neutralized with sodium hydrocarbonate. Then the oil is taken up in benzene, and the benzenic solution is washed with water, dried over unhydrous sodium sulfate and distilled.
  • the phosphoric acid ester of the following formula S OC2H5 01-s-i i ⁇ O C2115 References Cited in the file of this patent UNITED STATES PATENTS 2,648,696 Whetstone June 19, 1951 2,690,451 Gilbert et a1. Sept. 28, 1954 2,828,241 Birum Mar. 25, 1958 OTHER REFERENCES Ser. No. F10,047, Wegriken Bayer, Germany, published July 26, 1956.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Biochemistry (AREA)
  • Wood Science & Technology (AREA)
  • Dentistry (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Plant Pathology (AREA)
  • Pest Control & Pesticides (AREA)
  • Agronomy & Crop Science (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US696029A 1957-09-26 1957-11-13 Phenyl sulfoxy and lower alkyl sulfoxy o, o-di (lower alkyl) thiophosphate esters and process for preparation Expired - Lifetime US2910500A (en)

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DEF24038A DE1058050B (de) 1957-09-26 1957-09-26 Verfahren zur Herstellung von Thiophosphorsaeure- bzw. Phosphor-saeureestern

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BE (1) BE562136A (en(2012))
CH (1) CH368156A (en(2012))
DE (1) DE1058050B (en(2012))
FR (1) FR1216922A (en(2012))
GB (2) GB811268A (en(2012))
NL (2) NL99399C (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328360A (en) * 1962-07-06 1967-06-27 Exxon Research Engineering Co Polymers containing phosphorus
US4155958A (en) * 1977-09-26 1979-05-22 Standard Oil Company (Indiana) Beta-phosphosulfoxy alcohols

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179688A (en) * 1962-06-20 1965-04-20 Monsanto Co Phosphonyl- and thiophosphonyl-thio-nylamines and process of preparing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648696A (en) * 1951-06-19 1953-08-11 Shell Dev Mixed acid anhydrides and process for production of same
US2690451A (en) * 1951-09-28 1954-09-28 Allied Chem & Dye Corp Method for preparation of sulfur-containing esters of phosphoric acid
US2828241A (en) * 1954-05-25 1958-03-25 Monsanto Chemicals O,o-dialkyl s-arylmercapto phosphoro-dithioate compositions and method of destroyinginsects

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648696A (en) * 1951-06-19 1953-08-11 Shell Dev Mixed acid anhydrides and process for production of same
US2690451A (en) * 1951-09-28 1954-09-28 Allied Chem & Dye Corp Method for preparation of sulfur-containing esters of phosphoric acid
US2828241A (en) * 1954-05-25 1958-03-25 Monsanto Chemicals O,o-dialkyl s-arylmercapto phosphoro-dithioate compositions and method of destroyinginsects

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328360A (en) * 1962-07-06 1967-06-27 Exxon Research Engineering Co Polymers containing phosphorus
US4155958A (en) * 1977-09-26 1979-05-22 Standard Oil Company (Indiana) Beta-phosphosulfoxy alcohols

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DE1058050B (de) 1959-05-27
FR1216922A (fr) 1960-04-29
NL99399C (en(2012))
CH368156A (de) 1963-03-31
GB811268A (en) 1959-04-02
BE562136A (en(2012))
GB812045A (en) 1959-04-15
NL222488A (en(2012))

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