JPS5772932A - Preparation of 3-substituted formylcatechol - Google Patents
Preparation of 3-substituted formylcatecholInfo
- Publication number
- JPS5772932A JPS5772932A JP55147581A JP14758180A JPS5772932A JP S5772932 A JPS5772932 A JP S5772932A JP 55147581 A JP55147581 A JP 55147581A JP 14758180 A JP14758180 A JP 14758180A JP S5772932 A JPS5772932 A JP S5772932A
- Authority
- JP
- Japan
- Prior art keywords
- substituted
- catalyst
- compound
- diformylphenol
- raw material
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
PURPOSE: To obtain the titled compond useful as an intermediate for drugs selectively in high yield, by oxidizing a specific 2-substituted 4,6-diformylphenol as a raw material with hydrogen peroxide in the presence of a catalyst, e.g., copper compound in a basic aqueous solution.
CONSTITUTION: A 2-substituted 4,6-diformylphenol shown by the formulaI(X is alkoxy, alkyl, halogen, or H) is neutralized with an equivalent weight of a basic aqeuous solution of NaOH, etc. Afte adding a catalyst of a copper compound or silver compound to the phenol, it is oxidized with hydrogen peroxide in the form an aqueous solution while being kept at 0W25°C until a pH value of the reaction solution exhibits apporoximately 4 at 0W45°C, to give the desired compound shown by the formula II. A water-soluble compound, e.g., CuSO4, AgNO3, CuCl2,Cu (NO3)2, Cu(PO4)2, etc. is used as the catalyst.
USE: A raw material especially for 3,4,5-trimethoxybenzaldehyde, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55147581A JPS5772932A (en) | 1980-10-23 | 1980-10-23 | Preparation of 3-substituted formylcatechol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55147581A JPS5772932A (en) | 1980-10-23 | 1980-10-23 | Preparation of 3-substituted formylcatechol |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5772932A true JPS5772932A (en) | 1982-05-07 |
Family
ID=15433582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55147581A Pending JPS5772932A (en) | 1980-10-23 | 1980-10-23 | Preparation of 3-substituted formylcatechol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5772932A (en) |
-
1980
- 1980-10-23 JP JP55147581A patent/JPS5772932A/en active Pending
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