JPS5553240A - Preparation of m-substituted benzoic acid - Google Patents

Preparation of m-substituted benzoic acid

Info

Publication number
JPS5553240A
JPS5553240A JP12677878A JP12677878A JPS5553240A JP S5553240 A JPS5553240 A JP S5553240A JP 12677878 A JP12677878 A JP 12677878A JP 12677878 A JP12677878 A JP 12677878A JP S5553240 A JPS5553240 A JP S5553240A
Authority
JP
Japan
Prior art keywords
acid
copper
benzoic acid
water
chlorobenzoic
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
JP12677878A
Other languages
Japanese (ja)
Inventor
Nobuyuki Futamura
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 Kayaku Co Ltd
Original Assignee
Nippon Kayaku 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 Kayaku Co Ltd filed Critical Nippon Kayaku Co Ltd
Priority to JP12677878A priority Critical patent/JPS5553240A/en
Publication of JPS5553240A publication Critical patent/JPS5553240A/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
    • Y02P20/52—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)

Abstract

PURPOSE: To obtain m-oxybenzoic acid, economically and easily, in high yield and high purity, by chlorinating benzoic acid in water or dilute sulfuric acid, filtering the product under heating, and further hydrolyzing with alkali using copper, copper hydroxide or copper oxide as a catalyst.
CONSTITUTION: Benzoic acid is chlorinated in water or less than 30wt% of dilute sulfuric acid, by blowing chlorine at 40W70°C. After the reaction, crystals are separated by filtration preferably at 40W70°C, to obtain highly pure m-chlorobenzoic acid with low content of harmful dichlorobenzoic acid. The m-chlorobenzoic acid is hydrolyzed in an aqueous solution containing 0.8W3 times weight of an alkali (NaOH, etc.) based on the m-chlorobenzoic acid, at 200W260°C in the presence of a catalyst comprising preferably 0.1W20wt% of copper, copper hydroxide or copper oxide. The hydrolysis reaction is carried out smoothly, without inhibiting effect of the dichlorobenzoic acid, and the desired compound is obtained in high purity. The weight ratio of the benzoic acid to water, etc. is 1 to 20W60.
COPYRIGHT: (C)1980,JPO&Japio
JP12677878A 1978-10-17 1978-10-17 Preparation of m-substituted benzoic acid Pending JPS5553240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12677878A JPS5553240A (en) 1978-10-17 1978-10-17 Preparation of m-substituted benzoic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12677878A JPS5553240A (en) 1978-10-17 1978-10-17 Preparation of m-substituted benzoic acid

Publications (1)

Publication Number Publication Date
JPS5553240A true JPS5553240A (en) 1980-04-18

Family

ID=14943691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12677878A Pending JPS5553240A (en) 1978-10-17 1978-10-17 Preparation of m-substituted benzoic acid

Country Status (1)

Country Link
JP (1) JPS5553240A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002055475A1 (en) * 2001-01-12 2002-07-18 Nippon Kayaku Kabushiki Kaisha Process for producing 4,6-dinitroresorcinol
JP2012255014A (en) * 1998-03-09 2012-12-27 Dow Agrosciences Llc Process for produce of benzoic acid
WO2023027168A1 (en) * 2021-08-27 2023-03-02 株式会社エーピーアイ コーポレーション Salicylic acid production method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012255014A (en) * 1998-03-09 2012-12-27 Dow Agrosciences Llc Process for produce of benzoic acid
WO2002055475A1 (en) * 2001-01-12 2002-07-18 Nippon Kayaku Kabushiki Kaisha Process for producing 4,6-dinitroresorcinol
WO2023027168A1 (en) * 2021-08-27 2023-03-02 株式会社エーピーアイ コーポレーション Salicylic acid production method

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