GB817173A - Improvements in or relating to production of trichlorobenzoic acid and product obtained - Google Patents

Improvements in or relating to production of trichlorobenzoic acid and product obtained

Info

Publication number
GB817173A
GB817173A GB30218/55A GB3021855A GB817173A GB 817173 A GB817173 A GB 817173A GB 30218/55 A GB30218/55 A GB 30218/55A GB 3021855 A GB3021855 A GB 3021855A GB 817173 A GB817173 A GB 817173A
Authority
GB
United Kingdom
Prior art keywords
mixture
trichlorobenzyl
trichlorobenzoic
trichlorotoluene
bromide
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
GB30218/55A
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.)
Heyden Newport Chemical Corp
Original Assignee
Heyden Newport Chemical Corp
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 Heyden Newport Chemical Corp filed Critical Heyden Newport Chemical Corp
Publication of GB817173A publication Critical patent/GB817173A/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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

2 : 3 : 6 - Trichlorobenzoic acid or a mixture of isomeric trichlorobenzoic acids including the 2 : 3 : 6-isomer is produced by converting 2 : 3 : 6-trichlorobenzyl halide (e.g. chloride or bromide) or a mixture of isomeric trichlorobenzyl halides including the 2 : 3 : 6-isomer (preferably in an amount of at least 50 per cent) into an ester or esters: <FORM:0817173/IV (b)/1> R being H, CH3, C2H5 or other organic radical, and oxidizing the product with, for example, nitric acid to the trichlorobenzoic acid, which may be converted into its salts. The trichlorobenzyl chloride or bromide may be produced by converting toluene, o- or m-chlorotoluene, dichlorotoluenes or mixtures thereof to a mixture of trichloro isomers, and halogenating the side-chain. The mixed isomers contain mainly the 2 : 3 : 6-trichlorotoluene. In examples, o-chlortoluene is chlorinated to the 2 : 3 : 6-trichlorotoluene in various runs, or toluene is trichlorinated, the trichlorotoluene mixtures produced are chlorinated or brominated in the side-chain to trichlorobenzyl chloride or bromide, and this is converted to formate, acetate, oxalate, malonate, glycolate, levulinate, or benzoate, and the ester oxidized with nitric acid to the trichlorobenzoic acid as isomeric mixture, which may be isolated as its salts. Specification 817,174, [Group VI], is referred to.
GB30218/55A 1954-10-21 1955-10-21 Improvements in or relating to production of trichlorobenzoic acid and product obtained Expired GB817173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US817173XA 1954-10-21 1954-10-21

Publications (1)

Publication Number Publication Date
GB817173A true GB817173A (en) 1959-07-29

Family

ID=22165935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30218/55A Expired GB817173A (en) 1954-10-21 1955-10-21 Improvements in or relating to production of trichlorobenzoic acid and product obtained

Country Status (1)

Country Link
GB (1) GB817173A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985799A (en) * 1971-01-18 1976-10-12 Sandoz, Inc. 2-Fluoro-6-trifluoromethylbenzoic acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985799A (en) * 1971-01-18 1976-10-12 Sandoz, Inc. 2-Fluoro-6-trifluoromethylbenzoic acid

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