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GB1147179A - Preparation of 1-halo-phosphonic acids and their esters - Google Patents

Preparation of 1-halo-phosphonic acids and their esters

Info

Publication number
GB1147179A
GB1147179A GB5256966A GB5256966A GB1147179A GB 1147179 A GB1147179 A GB 1147179A GB 5256966 A GB5256966 A GB 5256966A GB 5256966 A GB5256966 A GB 5256966A GB 1147179 A GB1147179 A GB 1147179A
Authority
GB
United Kingdom
Prior art keywords
stage
phosphorus
chloride
esters
halo
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
GB5256966A
Inventor
Harold Coates
John Desmond Collins
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.)
Albright and Wilson Mfg Ltd
Original Assignee
Albright and Wilson Mfg Ltd
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 Albright and Wilson Mfg Ltd filed Critical Albright and Wilson Mfg Ltd
Priority to GB5256966A priority Critical patent/GB1147179A/en
Publication of GB1147179A publication Critical patent/GB1147179A/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
    • C07F9/28Phosphorus compounds with one or more P—C bonds
    • C07F9/38Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/3804Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)] not used, see subgroups
    • C07F9/3808Acyclic saturated acids which can have further substituents on alkyl

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

Abstract

1,147,179. Preparation of 1-halophosphonic acids and their esters. ALBRIGHT & WILSON (MFG.) Ltd. 15 Nov., 1967 [24 Nov., 1966], No. 52569/66. Heading C2C. 1 -Halo-phosphonic acids, or esters thereof, are prepared by (i) reacting a saturated aliphatic, aromatic or aralkyl aldehyde with a tervalent phosphorus halide in a molar ratio of at least 2À5 : 1, (ii) heating the product from stage (i) with a Friedel-Crafts catalyst, and (iii) reacting the product from stage (ii) with water or an alcohol to effect hydrolysis or alcoholysis. The first stage is generally carried out in two steps, the aldehyde and the phosphorus trihalide being first mixed at between 40‹ and 80‹ C. and then heated to between 70‹ and 100‹ C. in the second step. Specified Friedel-Crafts catalysts for use in stage (ii) are zinc chloride, aluminium trichloride, boron trifluoride and stannic chloride. The phosphorus trihalide used may be the chloride, bromide, fluoride or iodide, and if the iodide is used this may be formed in situ from iodine and red phosphorus. Specified aldehydes are formaldehyde, paraformaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, benzaldehyde and phenylacetaldehyde. An example is given for the production of chloromethylphosphonic acid from phosphorus trichloride and paraformaldehyde using zinc chloride as catalyst, methylene chloride and bis-(chloromethyl)-ether being formed as by-products.
GB5256966A 1966-11-24 1966-11-24 Preparation of 1-halo-phosphonic acids and their esters Expired GB1147179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5256966A GB1147179A (en) 1966-11-24 1966-11-24 Preparation of 1-halo-phosphonic acids and their esters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5256966A GB1147179A (en) 1966-11-24 1966-11-24 Preparation of 1-halo-phosphonic acids and their esters

Publications (1)

Publication Number Publication Date
GB1147179A true GB1147179A (en) 1969-04-02

Family

ID=10464424

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5256966A Expired GB1147179A (en) 1966-11-24 1966-11-24 Preparation of 1-halo-phosphonic acids and their esters

Country Status (1)

Country Link
GB (1) GB1147179A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7750180B2 (en) 2003-08-22 2010-07-06 Monsanto Technology Llc Process for the preparation of N-phosphonomethylglycine and derivatives thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7750180B2 (en) 2003-08-22 2010-07-06 Monsanto Technology Llc Process for the preparation of N-phosphonomethylglycine and derivatives thereof

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