JPS5524120A - Preparation of 2,5-dichlorobenzoic acid - Google Patents

Preparation of 2,5-dichlorobenzoic acid

Info

Publication number
JPS5524120A
JPS5524120A JP9664178A JP9664178A JPS5524120A JP S5524120 A JPS5524120 A JP S5524120A JP 9664178 A JP9664178 A JP 9664178A JP 9664178 A JP9664178 A JP 9664178A JP S5524120 A JPS5524120 A JP S5524120A
Authority
JP
Japan
Prior art keywords
iodine
acid
mixture
chlorine
solvent containing
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.)
Granted
Application number
JP9664178A
Other languages
Japanese (ja)
Other versions
JPS5715819B2 (en
Inventor
Shoji Kobayashi
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.)
SANWA KAGAKU KOGYO KK
Original Assignee
SANWA KAGAKU KOGYO KK
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 SANWA KAGAKU KOGYO KK filed Critical SANWA KAGAKU KOGYO KK
Priority to JP9664178A priority Critical patent/JPS5524120A/en
Publication of JPS5524120A publication Critical patent/JPS5524120A/en
Publication of JPS5715819B2 publication Critical patent/JPS5715819B2/ja
Granted 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

Abstract

PURPOSE: To obtain the title compound in high yield and purity, by heating a solution of 0-chlorobenzoic acid in a solvent containing chlorosulfonic acid which absorbed chlorine in the presence of iodine, a compound containing it, or their mixture as a catalyst.
CONSTITUTION: Chlorine is absorbed in 0-chlorobenzoic acid dissolved in chlorosulfonic acid (C) or a solvent containing C, and heated in the presence of iodine, a compound containing it, or their mixture, to give 2,5-dichlorobenzoic acid. The solvent containing C is preferably C alone or its mixture with sulfuric acid. Preferably, the compound containing iodine is a metallic iodide, e.g. potassium iodide, and its mixture contains iodine or a metallic iodide and another chlorine carrier, e.g. ferric chloride.
COPYRIGHT: (C)1980,JPO&Japio
JP9664178A 1978-08-10 1978-08-10 Preparation of 2,5-dichlorobenzoic acid Granted JPS5524120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9664178A JPS5524120A (en) 1978-08-10 1978-08-10 Preparation of 2,5-dichlorobenzoic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9664178A JPS5524120A (en) 1978-08-10 1978-08-10 Preparation of 2,5-dichlorobenzoic acid

Publications (2)

Publication Number Publication Date
JPS5524120A true JPS5524120A (en) 1980-02-21
JPS5715819B2 JPS5715819B2 (en) 1982-04-01

Family

ID=14170443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9664178A Granted JPS5524120A (en) 1978-08-10 1978-08-10 Preparation of 2,5-dichlorobenzoic acid

Country Status (1)

Country Link
JP (1) JPS5524120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57149245A (en) * 1981-02-07 1982-09-14 Bayer Ag Manufacture of polychlorobenzoylchloride

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57149245A (en) * 1981-02-07 1982-09-14 Bayer Ag Manufacture of polychlorobenzoylchloride
JPH0333697B2 (en) * 1981-02-07 1991-05-20 Bayer Ag

Also Published As

Publication number Publication date
JPS5715819B2 (en) 1982-04-01

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