GB749550A - Neutral aliphatic phosphites - Google Patents

Neutral aliphatic phosphites

Info

Publication number
GB749550A
GB749550A GB31566/53A GB3156653A GB749550A GB 749550 A GB749550 A GB 749550A GB 31566/53 A GB31566/53 A GB 31566/53A GB 3156653 A GB3156653 A GB 3156653A GB 749550 A GB749550 A GB 749550A
Authority
GB
United Kingdom
Prior art keywords
reaction
mixture
ester
aqueous phase
complete
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
GB31566/53A
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 GB749550A publication Critical patent/GB749550A/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
    • C07F9/06Phosphorus compounds without P—C bonds
    • C07F9/08Esters of oxyacids of phosphorus
    • C07F9/141Esters of phosphorous acids
    • C07F9/142Esters of phosphorous acids with hydroxyalkyl compounds without 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)

Abstract

Tertiary aliphatic esters of phosphorous acid are obtained by mixing a phosphorus trihalide and an aliphatic alcohol at below about - 20 DEG C., preferably at between - 25 DEG and - 30 DEG C., and after the reaction between them is complete, neutralizing the reaction mixture with ammonia or an organic nitrogenous base containing at least one hydrogen atom attached to the N atom at a temperature below - 20 DEG C. Specified aliphatic alcohols are methanol, ethanol, normal- and iso-propanol, butanols and pentanols and the phosphorus trihalide may be the trichloride, tribromide, or tri-iodide. In an example phosphorus trichloride is added gradually while stirring at - 25 DEG C. to anhydrous ethanol and when the reaction is complete the mixture is neutralized at the same temperature by introducing gaseous ammonia. The ester is isolated by treating the neutralized mixture with water whilst ensuring that the pH of the aqueous phase does not fall below 5. The aqueous phase is then separated from the ester (triethyl phosphite) which can be purified by distillation under reduced pressure.
GB31566/53A 1952-12-04 1953-11-13 Neutral aliphatic phosphites Expired GB749550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE749550X 1952-12-04

Publications (1)

Publication Number Publication Date
GB749550A true GB749550A (en) 1956-05-30

Family

ID=6649354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31566/53A Expired GB749550A (en) 1952-12-04 1953-11-13 Neutral aliphatic phosphites

Country Status (1)

Country Link
GB (1) GB749550A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036110A (en) * 1958-08-05 1962-05-22 Bayer Ag Process for the production of monomeric neutral aliphatic esters of phosphorus having a coordination number of 3
CN103374028A (en) * 2012-04-18 2013-10-30 江苏大明科技有限公司 Preparation method of triethyl phosphate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3036110A (en) * 1958-08-05 1962-05-22 Bayer Ag Process for the production of monomeric neutral aliphatic esters of phosphorus having a coordination number of 3
CN103374028A (en) * 2012-04-18 2013-10-30 江苏大明科技有限公司 Preparation method of triethyl phosphate

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