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FR2433013A1 - PROCESS FOR THE MANUFACTURE OF TRICHLORO-2,4,5 PHENOXYACETIC ACID, THE IMPLEMENTATION OF WHICH DOES NOT REQUIRE THE USE OF TRICHLORO-2,4,5 PHENOL - Google Patents

PROCESS FOR THE MANUFACTURE OF TRICHLORO-2,4,5 PHENOXYACETIC ACID, THE IMPLEMENTATION OF WHICH DOES NOT REQUIRE THE USE OF TRICHLORO-2,4,5 PHENOL

Info

Publication number
FR2433013A1
FR2433013A1 FR7823658A FR7823658A FR2433013A1 FR 2433013 A1 FR2433013 A1 FR 2433013A1 FR 7823658 A FR7823658 A FR 7823658A FR 7823658 A FR7823658 A FR 7823658A FR 2433013 A1 FR2433013 A1 FR 2433013A1
Authority
FR
France
Prior art keywords
trichloro
phenol
phenoxyacetic acid
implementation
require
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
FR7823658A
Other languages
French (fr)
Other versions
FR2433013B1 (en
Inventor
Raymond Giraudon
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.)
Bayer CropScience SA
Original Assignee
Rhone Poulenc Agrochimie SA
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 Rhone Poulenc Agrochimie SA filed Critical Rhone Poulenc Agrochimie SA
Priority to FR7823658A priority Critical patent/FR2433013A1/en
Priority to PCT/FR1979/000071 priority patent/WO1980000341A1/en
Priority to DE19792952976 priority patent/DE2952976A1/en
Publication of FR2433013A1 publication Critical patent/FR2433013A1/en
Application granted granted Critical
Publication of FR2433013B1 publication Critical patent/FR2433013B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • C07C59/40—Unsaturated compounds
    • C07C59/58—Unsaturated compounds containing ether groups, groups, groups, or groups
    • C07C59/64—Unsaturated compounds containing ether groups, groups, groups, or groups containing six-membered aromatic rings
    • C07C59/66—Unsaturated compounds containing ether groups, groups, groups, or groups containing six-membered aromatic rings the non-carboxylic part of the ether containing six-membered aromatic rings
    • C07C59/68—Unsaturated compounds containing ether groups, groups, groups, or groups containing six-membered aromatic rings the non-carboxylic part of the ether containing six-membered aromatic rings the oxygen atom of the ether group being bound to a non-condensed six-membered aromatic ring
    • C07C59/70—Ethers of hydroxy-acetic acid, e.g. substitutes on the ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/363—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by introduction of halogen; by substitution of halogen atoms by other halogen atoms

Landscapes

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

Abstract

A method for producing trichloro-2, 4, 5 phenoxyacetic acid appropriate for use as active material in herbicide compositions. The method comprises a first step of changing trichloro-2, 4, 5 phenoxyacetic acid into diazonium chloride, by action of an alkali metal nitrite and hydrochloric acid at a temperature ranging from 0 to 10`C, according to the reaction formula: (FORMULA) wherein Me represents an alkali metal atom, then a second step of heating the diazonium chloride at a temperature ranging from 40 to 70`C, in presence of hydrochloric acid and cuprous chloride. Such method avoids the use, as initial material, of trichloro-2, 4, 5 phenol, compound which is susceptible of containing tetrachloro- 2, 3, 7, 8 dibenzoparadioxine as impurity, the toxicity of which is very high.
FR7823658A 1978-08-07 1978-08-07 PROCESS FOR THE MANUFACTURE OF TRICHLORO-2,4,5 PHENOXYACETIC ACID, THE IMPLEMENTATION OF WHICH DOES NOT REQUIRE THE USE OF TRICHLORO-2,4,5 PHENOL Granted FR2433013A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7823658A FR2433013A1 (en) 1978-08-07 1978-08-07 PROCESS FOR THE MANUFACTURE OF TRICHLORO-2,4,5 PHENOXYACETIC ACID, THE IMPLEMENTATION OF WHICH DOES NOT REQUIRE THE USE OF TRICHLORO-2,4,5 PHENOL
PCT/FR1979/000071 WO1980000341A1 (en) 1978-08-07 1979-07-30 Process for producing trichloro-2,4,5-phenoxyacetic acid
DE19792952976 DE2952976A1 (en) 1978-08-07 1979-07-30 PROCESS FOR PRODUCING TRICHLORO-2,4,5-PHENOXYACETIC ACID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7823658A FR2433013A1 (en) 1978-08-07 1978-08-07 PROCESS FOR THE MANUFACTURE OF TRICHLORO-2,4,5 PHENOXYACETIC ACID, THE IMPLEMENTATION OF WHICH DOES NOT REQUIRE THE USE OF TRICHLORO-2,4,5 PHENOL

Publications (2)

Publication Number Publication Date
FR2433013A1 true FR2433013A1 (en) 1980-03-07
FR2433013B1 FR2433013B1 (en) 1980-12-12

Family

ID=9211766

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823658A Granted FR2433013A1 (en) 1978-08-07 1978-08-07 PROCESS FOR THE MANUFACTURE OF TRICHLORO-2,4,5 PHENOXYACETIC ACID, THE IMPLEMENTATION OF WHICH DOES NOT REQUIRE THE USE OF TRICHLORO-2,4,5 PHENOL

Country Status (2)

Country Link
FR (1) FR2433013A1 (en)
WO (1) WO1980000341A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684397A (en) * 1983-05-16 1987-08-04 Sumitomo Chemical Company, Limited 2-Substituted phenyl-4,5,6,7-tetrahydro-2H-iso-indole-1,3-diones, and their production and use
US4826533A (en) * 1981-12-25 1989-05-02 Sumitomo Chemical Company, Limited N-(substituted phenyl)-tetrahydrophthalimide compounds, and their production and herbicide use
US4902832A (en) * 1983-08-31 1990-02-20 Sumitomo Chemical Company, Limited 2-Substituted phenyl-4,5,6,7-tetrahydro-2H-isoindole-1,3-diones, and their production and use

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HW1965 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826533A (en) * 1981-12-25 1989-05-02 Sumitomo Chemical Company, Limited N-(substituted phenyl)-tetrahydrophthalimide compounds, and their production and herbicide use
US4938795A (en) * 1981-12-25 1990-07-03 Sumitomo Chemical Company, Limited Tetrahydrophthalimide compounds, and their production and use
US4684397A (en) * 1983-05-16 1987-08-04 Sumitomo Chemical Company, Limited 2-Substituted phenyl-4,5,6,7-tetrahydro-2H-iso-indole-1,3-diones, and their production and use
US4709049A (en) * 1983-05-16 1987-11-24 Sumitomo Chemical Company, Limited 2-substituted phenyl-4,5,6,7,-tetrahydro-2H-indole-1,3,-diones, and their production and use
US4902832A (en) * 1983-08-31 1990-02-20 Sumitomo Chemical Company, Limited 2-Substituted phenyl-4,5,6,7-tetrahydro-2H-isoindole-1,3-diones, and their production and use

Also Published As

Publication number Publication date
WO1980000341A1 (en) 1980-03-06
FR2433013B1 (en) 1980-12-12

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