JPS57108034A - Preparation of 4-hydroxybenzaldehyde - Google Patents
Preparation of 4-hydroxybenzaldehydeInfo
- Publication number
- JPS57108034A JPS57108034A JP55182858A JP18285880A JPS57108034A JP S57108034 A JPS57108034 A JP S57108034A JP 55182858 A JP55182858 A JP 55182858A JP 18285880 A JP18285880 A JP 18285880A JP S57108034 A JPS57108034 A JP S57108034A
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- compound
- basic aqueous
- basic
- formulai
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
PURPOSE: To obtain the titled compound useful as an intermediate raw material for medicines, perfumes, etc. in high yield, by oxidizing a 4-hydroxyphenylglycine with a gas containing oxygen in a basic aqueous solution.
CONSTITUTION: A 4-hydroxyphenylglycine of formulaI(X is H, OH, halogen, lower alkyl or lower alkoxyl) is oxidized with a gas containing oxygen in a feed volume of 0.05W0.5Nl/min based on one l reaction solution in a basic aqueous solution at 90W130°C for 1W2.5hr at normal or higher pressure to give the aimed compound of formula II. The basic aqueous solution is prepared by dissolving a basic substance, e.g. NaOH or K2CO3, in water. The amount of the basic substance to be used is 2W6mol based on one mole compound of formulaI. The concentration of the compound of formulaIin the reaction mixture is preferably 0.5W15wt%. The yield is further improved if necessary by adding a metallic catalyst, e.g. a simple substance such as copper, an oxide, hydroxide or acetate salt, thereto, and the reaction time is reduced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55182858A JPS57108034A (en) | 1980-12-25 | 1980-12-25 | Preparation of 4-hydroxybenzaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55182858A JPS57108034A (en) | 1980-12-25 | 1980-12-25 | Preparation of 4-hydroxybenzaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57108034A true JPS57108034A (en) | 1982-07-05 |
Family
ID=16125675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55182858A Pending JPS57108034A (en) | 1980-12-25 | 1980-12-25 | Preparation of 4-hydroxybenzaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57108034A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053887C (en) * | 1995-06-09 | 2000-06-28 | 王光信 | Electric synthetic method for p-fluorobenzaldehyde |
| WO2001079147A1 (en) * | 2000-04-17 | 2001-10-25 | Dsm Fine Chemicals Austria Nfg Gmbh & Co Kg | Method for the production of aromatic or heteroaromatic aldehydes or ketones by oxidative decarboxylation |
| WO2002002495A1 (en) * | 2000-07-05 | 2002-01-10 | Dsm Fine Chemicals Austria Nfg Gmbh & Cokg | Method for producing optionally substituted aliphatic, aromatic or heteraromatic aldehydes |
-
1980
- 1980-12-25 JP JP55182858A patent/JPS57108034A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053887C (en) * | 1995-06-09 | 2000-06-28 | 王光信 | Electric synthetic method for p-fluorobenzaldehyde |
| WO2001079147A1 (en) * | 2000-04-17 | 2001-10-25 | Dsm Fine Chemicals Austria Nfg Gmbh & Co Kg | Method for the production of aromatic or heteroaromatic aldehydes or ketones by oxidative decarboxylation |
| WO2002002495A1 (en) * | 2000-07-05 | 2002-01-10 | Dsm Fine Chemicals Austria Nfg Gmbh & Cokg | Method for producing optionally substituted aliphatic, aromatic or heteraromatic aldehydes |
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