GB734187A - Improvements in the manufacture of organic phosphorus compounds - Google Patents
Improvements in the manufacture of organic phosphorus compoundsInfo
- Publication number
- GB734187A GB734187A GB1881251A GB1881251A GB734187A GB 734187 A GB734187 A GB 734187A GB 1881251 A GB1881251 A GB 1881251A GB 1881251 A GB1881251 A GB 1881251A GB 734187 A GB734187 A GB 734187A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkyl
- methyl
- phosphorus
- chloride
- reacting
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids RP(=O)(OH)2; Thiophosphonic acids, i.e. RP(=X)(XH)2 (X = S, Se)
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/535—Organo-phosphoranes
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
Alkyl phosphorus tetrafluorides are obtained by reacting a complex compound derived from an alkyl chloride, phosphorus trichloride and anhydrous aluminium trichloride with hydrogen fluoride. The alkyl phosphorus tetrafluoride may be converted into an alkyl phosphonyl compound by the introduction of oxygen, e.g. by reacting with sulphur dioxide to produce an alkyl phosphonyl difluoride, or by reacting with water to produce an alkyl phosphonic acid. Specified alkyl groups are methyl and ethyl. In an example a mild steel autoclave is charged with (CH3.PCl3.AlCl4) complex and anhydrous hydrogen fluoride, the latter being contained in a suspended polythene bucket. The reactants are then mixed and allowed to stand at room temperature for several hours until the autoclave is quite cold. The gaseous contents of the autoclave comprising essentially methyl phosphorus tetrafluoride (CH3.PF4), hydrogen chloride, and excess hydrogen fluoride are then mixed with a stream of sulphur dioxide and the mixed gases passed through an iron tube containing stainless steel gauze and kept at 100 DEG C. The off-gases are condensed in a copper pipe kept at about -75 DEG C. to yield methyl phosphonyl difluoride (CH3POF2), the identity of which is checked by hydrolysing a sample with dilute hydrochloric acid to form methyl phosphonic acid. The complex compound derived from methyl chloride can be produced in known manner by combining the three components in equimolecular proportions in an additive reaction. The Provisional Specification refers to the use of a complex of an alkyl halide, phosphorus trichloride and aluminium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1881251A GB734187A (en) | 1951-08-09 | 1951-08-09 | Improvements in the manufacture of organic phosphorus compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1881251A GB734187A (en) | 1951-08-09 | 1951-08-09 | Improvements in the manufacture of organic phosphorus compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB734187A true GB734187A (en) | 1955-07-27 |
Family
ID=10118831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1881251A Expired GB734187A (en) | 1951-08-09 | 1951-08-09 | Improvements in the manufacture of organic phosphorus compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB734187A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2904588A (en) * | 1956-03-26 | 1959-09-15 | Du Pont | Fluorophosphoranes and their preparation |
| WO2005049628A1 (en) * | 2003-11-17 | 2005-06-02 | Merck Patent Gmbh | Method for the production of mono(fluoroalkyl)phosphoranes, bis(fluoroalkyl)phosphoranes, and the corresponding acids and phosphates |
-
1951
- 1951-08-09 GB GB1881251A patent/GB734187A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2904588A (en) * | 1956-03-26 | 1959-09-15 | Du Pont | Fluorophosphoranes and their preparation |
| WO2005049628A1 (en) * | 2003-11-17 | 2005-06-02 | Merck Patent Gmbh | Method for the production of mono(fluoroalkyl)phosphoranes, bis(fluoroalkyl)phosphoranes, and the corresponding acids and phosphates |
| US7541488B2 (en) | 2003-11-17 | 2009-06-02 | Merck Patent Gmbh | Process for the preparation of mono- and bis(fluoroalkyl)phosphoranes and the corresponding acids and phosphates |
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