GB691800A - Improvements in the preparation of 1-phenyl-2,3-dimethyl-4-amino-5-pyrazolone-n-phosphoric acid dialkyl-, dihaloalkyl- or diaralkyl-esters - Google Patents

Improvements in the preparation of 1-phenyl-2,3-dimethyl-4-amino-5-pyrazolone-n-phosphoric acid dialkyl-, dihaloalkyl- or diaralkyl-esters

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Publication number
GB691800A
GB691800A GB24163/50A GB2416350A GB691800A GB 691800 A GB691800 A GB 691800A GB 24163/50 A GB24163/50 A GB 24163/50A GB 2416350 A GB2416350 A GB 2416350A GB 691800 A GB691800 A GB 691800A
Authority
GB
United Kingdom
Prior art keywords
dimethyl
pyrazolone
phenyl
amino
phosphoric acid
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
GB24163/50A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB691800A publication Critical patent/GB691800A/en
Expired legal-status Critical Current

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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
    • C07F9/547Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/645Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having two nitrogen atoms as the only ring hetero atoms
    • C07F9/6503Five-membered rings
    • C07F9/65031Five-membered rings having the nitrogen atoms in the positions 1 and 2

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  • 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)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

The invention comprises compounds of the formula <FORM:0691800/IV (b)/1> wherein R is an alkyl, haloalkyl or aralkyl radical. They are obtained by reacting 1-phenyl-2,3-dimethyl-4-amino-5-pyrazolone with mono-halides of dialkyl, di-(haloalkyl) or diaralkyl phosphoric acid esters, the hydrogen halide formed in the reaction being neutralized, e.g. with an alkali metal acetate in methanol solution. Excess 1 - phenyl - 2,3 - dimethyl - 4 - amino - 5 - pyrazolone may also be used for neutralization. Examples described the reaction of 1 - phenyl - 2,3 - dimethyl - 4 - amino - 5 - pyrazolone with (1) dimethyl phosphoric acid ester chloride; (2) diethyl phosphoric acid ester chloride. Compounds of the above general formula where R represents n-propyl, isopropyl, n-butyl, isobutyl, isoamyl, chlorethyl, and benzyl radicals are prepared similarly. Specification 593,480 is referred to.
GB24163/50A 1949-10-05 1950-10-03 Improvements in the preparation of 1-phenyl-2,3-dimethyl-4-amino-5-pyrazolone-n-phosphoric acid dialkyl-, dihaloalkyl- or diaralkyl-esters Expired GB691800A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE691800X 1949-10-05

Publications (1)

Publication Number Publication Date
GB691800A true GB691800A (en) 1953-05-20

Family

ID=6601939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24163/50A Expired GB691800A (en) 1949-10-05 1950-10-03 Improvements in the preparation of 1-phenyl-2,3-dimethyl-4-amino-5-pyrazolone-n-phosphoric acid dialkyl-, dihaloalkyl- or diaralkyl-esters

Country Status (1)

Country Link
GB (1) GB691800A (en)

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