JPS5566538A - Preparation of 2,4-dichlorobenzoic acid chloride - Google Patents

Preparation of 2,4-dichlorobenzoic acid chloride

Info

Publication number
JPS5566538A
JPS5566538A JP13980778A JP13980778A JPS5566538A JP S5566538 A JPS5566538 A JP S5566538A JP 13980778 A JP13980778 A JP 13980778A JP 13980778 A JP13980778 A JP 13980778A JP S5566538 A JPS5566538 A JP S5566538A
Authority
JP
Japan
Prior art keywords
acid chloride
dichlorobenzoic acid
inert solvent
chlorination
give
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
JP13980778A
Other languages
Japanese (ja)
Inventor
Shinji Takenaka
Kosuke Yamamoto
Akihiro Tamaoki
Tomohito Koba
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP13980778A priority Critical patent/JPS5566538A/en
Publication of JPS5566538A publication Critical patent/JPS5566538A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To obtain the high purity title compound, useful as an intermediate of pesticides and industrial chemicals, in high yield, by the chlorination of p-toluenesulfonyl chloride in two steps under a specific condition, followed by the hydrolysis.
CONSTITUTION: p-Toluenesulfonyl chloride is chlorinated with Cl2 at 69W150°C (molten state) in or without an inert solvent in the presence of a conventional chlorination catalyst. The reaction mixture, obtained after removing the chlorination catalyst, is again chlorinated at 150W300°C in or without an inert solvent to give high purity 2,4-dichlorobenzo-trichloride in high yield with few side reactions except the formation of trace amount of tarry products. The above compound is then hydrolyzed with a proper method to give 2,4-dichlorobenzoic acid chloride. Its purity and yield depends on the preceding processes.
COPYRIGHT: (C)1980,JPO&Japio
JP13980778A 1978-11-15 1978-11-15 Preparation of 2,4-dichlorobenzoic acid chloride Pending JPS5566538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13980778A JPS5566538A (en) 1978-11-15 1978-11-15 Preparation of 2,4-dichlorobenzoic acid chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13980778A JPS5566538A (en) 1978-11-15 1978-11-15 Preparation of 2,4-dichlorobenzoic acid chloride

Publications (1)

Publication Number Publication Date
JPS5566538A true JPS5566538A (en) 1980-05-20

Family

ID=15253887

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13980778A Pending JPS5566538A (en) 1978-11-15 1978-11-15 Preparation of 2,4-dichlorobenzoic acid chloride

Country Status (1)

Country Link
JP (1) JPS5566538A (en)

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