GB825225A - Improvements in or relating to the production of aromatic aldehydes - Google Patents
Improvements in or relating to the production of aromatic aldehydesInfo
- Publication number
- GB825225A GB825225A GB24373/56A GB2437356A GB825225A GB 825225 A GB825225 A GB 825225A GB 24373/56 A GB24373/56 A GB 24373/56A GB 2437356 A GB2437356 A GB 2437356A GB 825225 A GB825225 A GB 825225A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aldehyde
- hydrofluoric acid
- fluoborate
- boron trifluoride
- aromatic
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C47/00—Compounds having —CHO groups
- C07C47/02—Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/49—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C47/00—Compounds having —CHO groups
- C07C47/52—Compounds having —CHO groups bound to carbon atoms of six—membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C47/00—Compounds having —CHO groups
- C07C47/52—Compounds having —CHO groups bound to carbon atoms of six—membered aromatic rings
- C07C47/55—Compounds having —CHO groups bound to carbon atoms of six—membered aromatic rings containing halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
In a process for making aromatic aldehydes from aromatic hydrocarbons and carbon monoxide using boron trifluoride and hydrofluoric acid as catalysts and wherein the reaction mixture comprising an aromatic aldehyde-boron trifluoride-hydrofluoric acid complex, excess hydrofluoric acid and aromatic hydrocarbon and discharged from the reaction zone is treated with barium or strontium fluoride to combine with the boron trifluoride to form a metal fluoborate and at the same time to liberate hydrofluoric acid and the aldehyde from the complex and the free hydrofluoric acid is removed by evaporation, the metal fluoborate is separated from the aldehyde by treatment with a liquid in which the fluoborate is soluble and in which the aldehyde is insoluble, such as water. The fluoborate solution is separated by sedimentation, the solvent removed and the fluoborate heated to recover boron trifluoride and barium or strontium fluoride. The aldehyde is recovered from the organic layer by distillation. The conversion of toluene to toluic aldehyde is described.ALSO:In a process for making aromatic aldehydes from aromatic hydrocarbons and carbon monoxide using boron trifluoride and hydrofluoric acid as catalysts and wherein the reaction mixture comprising an aromatic aldehyde-boron trifluoride - hydrofluoric acid complex, excess hydrofluoric acid and aromatic hydrocarbon and discharged from the reaction zone is treated with barium or strontium fluoride to combine with the boron trifluoride to form a metal fluoborate and at the same time to liberate hydrofluoric acid and the aldehyde from the complex and the free hydrofluoric acid is removed by evaporation, the metal fluoborate is separated from the aldehyde by treatment with a liquid in which the fluoborate is soluble and in which the aldehyde is insoluble, such as water. The fluoborate solution is separated by sedimentation, the solvent removed and the fluoborate heated to recover boron trifluoride and barium or strontium fluoride. The aldehyde is recovered from the organic layer by distillation. The conversion of toluene to toluic aldehyde is described.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE825225X | 1955-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB825225A true GB825225A (en) | 1959-12-09 |
Family
ID=6747485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24373/56A Expired GB825225A (en) | 1955-08-10 | 1956-08-09 | Improvements in or relating to the production of aromatic aldehydes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB825225A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1044990A1 (en) * | 1998-10-29 | 2000-10-18 | Nippon Petrochemicals Company, Limited | Method of removing and recovering boron trifluoride with metal fluoride and process for polyolefin production using the same |
-
1956
- 1956-08-09 GB GB24373/56A patent/GB825225A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1044990A1 (en) * | 1998-10-29 | 2000-10-18 | Nippon Petrochemicals Company, Limited | Method of removing and recovering boron trifluoride with metal fluoride and process for polyolefin production using the same |
EP1044990A4 (en) * | 1998-10-29 | 2001-10-31 | Nippon Petrochemicals Co Ltd | Method of removing and recovering boron trifluoride with metal fluoride and process for polyolefin production using the same |
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