JPS5566539A - Preparation of m-phenoxybenzoic acid - Google Patents

Preparation of m-phenoxybenzoic acid

Info

Publication number
JPS5566539A
JPS5566539A JP13972278A JP13972278A JPS5566539A JP S5566539 A JPS5566539 A JP S5566539A JP 13972278 A JP13972278 A JP 13972278A JP 13972278 A JP13972278 A JP 13972278A JP S5566539 A JPS5566539 A JP S5566539A
Authority
JP
Japan
Prior art keywords
catalyst
bromoacetate
cobalt
oxygen
water
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
Application number
JP13972278A
Other languages
Japanese (ja)
Inventor
Kinhei Kato
Yoshikane Kanehara
Akira Ariizumi
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.)
Nippon Soda Co Ltd
Original Assignee
Nippon Soda Co Ltd
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 Nippon Soda Co Ltd filed Critical Nippon Soda Co Ltd
Priority to JP13972278A priority Critical patent/JPS5566539A/en
Publication of JPS5566539A publication Critical patent/JPS5566539A/en
Pending legal-status Critical Current

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
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: To obtain the title compound useful as an intermediate of pyrethroid insecticides industrially advantageously, by catalytic oxidation of metaphenoxytoluene in a specific solvent in the presence of cobalt bromoacetate as a catalyst, and by recycling the catalyst and solvent in the reaction process.
CONSTITUTION: m-Phenoxytoluene is oxidized with oxygen or a gas comprising oxygen e.g. air, in a solution of cobalt bromoacetate in a lower fatty acid. The reaction liquid thus obtained is cooled at 60°C or below, and the deposited crystals of m-phenoxybenzoic acid are separated. The remaining mother liquor is distilled by adding an organic solvent capable of forming an azeotropic mixture with water, preferably benzene, to have 4% of water or less, and recycled in the oxidation step mentioned above. This catalyst has advantages of rapid oxidation of said raw material without a reaction initiator and a co-catalyst, and of repeated use in a simple treatment.
COPYRIGHT: (C)1980,JPO&Japio
JP13972278A 1978-11-13 1978-11-13 Preparation of m-phenoxybenzoic acid Pending JPS5566539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13972278A JPS5566539A (en) 1978-11-13 1978-11-13 Preparation of m-phenoxybenzoic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13972278A JPS5566539A (en) 1978-11-13 1978-11-13 Preparation of m-phenoxybenzoic acid

Publications (1)

Publication Number Publication Date
JPS5566539A true JPS5566539A (en) 1980-05-20

Family

ID=15251871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13972278A Pending JPS5566539A (en) 1978-11-13 1978-11-13 Preparation of m-phenoxybenzoic acid

Country Status (1)

Country Link
JP (1) JPS5566539A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034413A1 (en) * 1980-02-12 1981-08-26 Imperial Chemical Industries Plc Process for the preparation of diphenylether carboxylic acids
JPH0443232U (en) * 1990-08-09 1992-04-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034413A1 (en) * 1980-02-12 1981-08-26 Imperial Chemical Industries Plc Process for the preparation of diphenylether carboxylic acids
JPH0443232U (en) * 1990-08-09 1992-04-13

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