GB691267A - Neutral esters of selenophosphoric acid - Google Patents

Neutral esters of selenophosphoric acid

Info

Publication number
GB691267A
GB691267A GB20702/50A GB2070250A GB691267A GB 691267 A GB691267 A GB 691267A GB 20702/50 A GB20702/50 A GB 20702/50A GB 2070250 A GB2070250 A GB 2070250A GB 691267 A GB691267 A GB 691267A
Authority
GB
United Kingdom
Prior art keywords
radical
alkyl
methyl
ethyl
radicals
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
Application number
GB20702/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB691267A publication Critical patent/GB691267A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Molecular Biology (AREA)
  • Agronomy & Crop Science (AREA)
  • Biochemistry (AREA)
  • Plant Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention comprises the selenophosphoric esters of the general formula <FORM:0691267/IV (b)/1> wherein R1 and R2 are the same or different alkyl radicals and R3 is an alkyl, aralkyl or aryl (including substituted phenyl) radical, and when R3 is an alkyl or aralkyl radical, the alkyl chain linked to selenium may be interrupted by a sulphur atom, and a process for preparing the above compounds by reacting a dialkyl phosphite <FORM:0691267/IV (b)/2> wherein R1 and R2 have the above significance and X is hydrogen or an alkali metal, with a selenocyanide R3SeCN, where R3 has the above significance, in an inert diluent at temperatures ranging from room temperature to about 100 DEG C. The radicals R1 and R2 are preferably lower alkyl p radicals, e.g. methyl or ethyl radicals. The group R3 may be a methyl, ethyl, propyl, butyl, hexyl, dodecyl, benzyl, naphthylmethyl or phenyl radical, or a phenyl radical substituted with a halogen atom, or an alkyl, alkoxy or nitro group, and when the alkyl chain is interrupted by sulphur, the group R3 may be a methylmercaptoethyl, ethylmercaptoethyl, phenylmercaptoethyl or (methylphenyl)-mercaptoethyl radical. The inert diluent may be benzene or toluene. In the examples the following compounds of the above general formula are referred to: R1 and R2 are methyl and R3 is p-nitrophenyl; R1 and R2 are ethyl and R3 is methyl, ethyl, n-propyl, n-butyl, hexyl, dodecyl, phenyl, p-chlorophenyl, o-methoxyphenyl, p-methoxyphenyl, p-nitrophenyl, alpha - naphthylmethyl, ethylmercaptoethyl, methylmercaptoethyl, and p-methylphenylmercaptoethyl.ALSO:Insecticidal preparations comprise a liquid or solid carrier and a selenophosphoric ester of the general formula wherein R1 and R2 represent the same or different alkyl radicals and R3 represents an alkyl, aralkyl or aryl (including substituted phenyl) radical, and when R3 represents an alkyl or <FORM:0691267/VI/1> aralkyl radical the alkyl chain linked to the selenium atom may be interrupted by a sulphur atom. Preferably the radicals R1 and R2 are lower alkyl radicals e.g., methyl and ethyl radicals. The radical R3 may be a methyl, ethyl, propyl, butyl, hexyl, dodecyl, benzyl, naphthylmethyl or phenyl radical, or a phenyl radical substituted with a halogen atom or an alkyl, alkoxy or nitro group, and when the alkyl chain is interrupted by sulphur the radical R3 may be a methylmercaptoethyl, ethylmercaptoethyl, phenylmercaptoethyl or (methylphenyl)-mercaptoethyl radical. In the examples preparations are referred to consisting of water or dust and each one of the following compounds of the above general formula:-R1 and R2 are methyl and R3 is p-nitrophenyl; R1 and R2 are ethyl and R3 is methyl, ethyl, n-propyl, n-butyl, hexyl, dodecyl, phenyl, p-chlorophenyl, o-methoxyphenyl, p-methoxyphenyl, p-nitrophenyl, alpha-naphthylmethyl, ethylmercaptoethyl, methylmercaptoethyl and p-methylphenylmercaptoethyl.
GB20702/50A 1949-08-20 1950-08-21 Neutral esters of selenophosphoric acid Expired GB691267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR691267X 1949-08-20

Publications (1)

Publication Number Publication Date
GB691267A true GB691267A (en) 1953-05-06

Family

ID=9032863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20702/50A Expired GB691267A (en) 1949-08-20 1950-08-21 Neutral esters of selenophosphoric acid

Country Status (1)

Country Link
GB (1) GB691267A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126895A (en) * 1982-09-15 1984-04-04 Univ Washington Compositions and methods to reduce animal browsing damage to plants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126895A (en) * 1982-09-15 1984-04-04 Univ Washington Compositions and methods to reduce animal browsing damage to plants

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