GB879120A - Process for the production of chlorobenzoic acids - Google Patents

Process for the production of chlorobenzoic acids

Info

Publication number
GB879120A
GB879120A GB21855/57A GB2185557A GB879120A GB 879120 A GB879120 A GB 879120A GB 21855/57 A GB21855/57 A GB 21855/57A GB 2185557 A GB2185557 A GB 2185557A GB 879120 A GB879120 A GB 879120A
Authority
GB
United Kingdom
Prior art keywords
chlorobenzoic acids
production
tetra
tri
excess
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.)
Expired
Application number
GB21855/57A
Inventor
Denis William Pound
Harold George Haynes
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.)
Fisons Pest Control Ltd
Original Assignee
Fisons Pest Control 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 Fisons Pest Control Ltd filed Critical Fisons Pest Control Ltd
Priority to GB21855/57A priority Critical patent/GB879120A/en
Priority to DEF26108A priority patent/DE1124936B/en
Publication of GB879120A publication Critical patent/GB879120A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids
    • C07C51/275—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids of hydrocarbyl groups
    • 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
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Abstract

Chlorobenzoic acids are prepared by oxidising di-, tri- or tetra-chlorotoluenes with nitric acid at a temperature in excess of the boiling point of the nitric acid and at pressures not in excess of atmospheric pressure. Preferred temperatures are 170-220 DEG C. The reaction may be carried out batchwise or continuously and apparatus for the continuous reaction is described. In examples the corresponding chlorotoluenes are oxidised to chlorobenzoic acids including 2 : 3- and 2 : 6-di-, 2 : 3 : 6-tri- and 2 : 3 : 4 : 5-, 2 : 3 : 5 : 6-and 2 : 3 : 4 : 6-tetra-chlorobenzoic acids.
GB21855/57A 1957-07-10 1957-07-10 Process for the production of chlorobenzoic acids Expired GB879120A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB21855/57A GB879120A (en) 1957-07-10 1957-07-10 Process for the production of chlorobenzoic acids
DEF26108A DE1124936B (en) 1957-07-10 1958-07-08 Process for the production of polychlorobenzoic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21855/57A GB879120A (en) 1957-07-10 1957-07-10 Process for the production of chlorobenzoic acids

Publications (1)

Publication Number Publication Date
GB879120A true GB879120A (en) 1961-10-04

Family

ID=10169959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21855/57A Expired GB879120A (en) 1957-07-10 1957-07-10 Process for the production of chlorobenzoic acids

Country Status (2)

Country Link
DE (1) DE1124936B (en)
GB (1) GB879120A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115536516A (en) * 2022-10-31 2022-12-30 安阳工学院 Method for synthesizing chlorobenzoic acid by utilizing flow photochemistry

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720385A (en) * 1951-05-28 1954-12-15 Monsanto Chemicals Preparation of phthalic acids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115536516A (en) * 2022-10-31 2022-12-30 安阳工学院 Method for synthesizing chlorobenzoic acid by utilizing flow photochemistry

Also Published As

Publication number Publication date
DE1124936B (en) 1962-03-08

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