ES2104193T3 - Procedimiento para la preparacion de acidos 4,5-difluoro-benzoicos, derivados de acidos 4,5-difluoro-benzoicos y 4,5-difluoro-benzaldehidos. - Google Patents

Procedimiento para la preparacion de acidos 4,5-difluoro-benzoicos, derivados de acidos 4,5-difluoro-benzoicos y 4,5-difluoro-benzaldehidos.

Info

Publication number
ES2104193T3
ES2104193T3 ES94100423T ES94100423T ES2104193T3 ES 2104193 T3 ES2104193 T3 ES 2104193T3 ES 94100423 T ES94100423 T ES 94100423T ES 94100423 T ES94100423 T ES 94100423T ES 2104193 T3 ES2104193 T3 ES 2104193T3
Authority
ES
Spain
Prior art keywords
difluoro
benzoic acids
benzaldehydes
derivatives
procedure
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 - Lifetime
Application number
ES94100423T
Other languages
English (en)
Inventor
Ralf Dr Pfirmann
Theodor Dr Papenfuhs
Georg Dr Weichselbaumer
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of ES2104193T3 publication Critical patent/ES2104193T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C07C51/347—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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/63—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of halogen; by substitution of halogen atoms by other halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/567—Preparation of carboxylic acid anhydrides by reactions not involving carboxylic acid anhydride groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/307—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group 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

LA PRESENTE INVENCION SE REFIERE A UN PROCESO PARA LA ELABORACION DE COMPUESTOS DE LA FORMULA (I) DONDE R1 ES OH, ATOMOS DE CARBONO, CONH2, NDE SE TRANSFORMA UN COMPUESTO DE LA FORMULA (II) DONDE R1 POSEE EL SIGNIFICADO ANTES DADO Y R3 ES H O CL, EN PRESENCIA DE UN CATALIZADOR DE CLORACION CON UN AGENTE DE CLORACION DESDE -10 HASTA 200
ES94100423T 1993-01-29 1994-01-13 Procedimiento para la preparacion de acidos 4,5-difluoro-benzoicos, derivados de acidos 4,5-difluoro-benzoicos y 4,5-difluoro-benzaldehidos. Expired - Lifetime ES2104193T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4302458 1993-01-29

Publications (1)

Publication Number Publication Date
ES2104193T3 true ES2104193T3 (es) 1997-10-01

Family

ID=6479181

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94100423T Expired - Lifetime ES2104193T3 (es) 1993-01-29 1994-01-13 Procedimiento para la preparacion de acidos 4,5-difluoro-benzoicos, derivados de acidos 4,5-difluoro-benzoicos y 4,5-difluoro-benzaldehidos.

Country Status (6)

Country Link
US (1) US5473095A (es)
EP (1) EP0608714B1 (es)
JP (1) JPH06316545A (es)
CA (1) CA2114504A1 (es)
DE (1) DE59402562D1 (es)
ES (1) ES2104193T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19620797A1 (de) * 1996-05-23 1997-11-27 Bayer Ag Verfahren zur Herstellung von halogenierten Phthalsäuren und deren Derivaten
IL123137A0 (en) * 1998-02-02 1998-09-24 Bromine Compounds Ltd Process for the halogenation of aldehydes and ketones
CN100546970C (zh) * 2006-05-18 2009-10-07 中国科学院广州化学研究所 一种溴代苯甲酸酯的合成方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6471844A (en) * 1987-09-14 1989-03-16 Sds Biotech Kk 2,4,5-trifluoroisophthalonitrile and production thereof
JPH072679B2 (ja) * 1988-04-15 1995-01-18 旭硝子株式会社 ２―クロロ―４，５―ジフルオロ安息香酸誘導体
US5214187A (en) * 1988-06-21 1993-05-25 Basf Aktiengesellschaft Benzonitriles, benzaldehydes and benzyl alcohols
US5187295A (en) * 1991-02-20 1993-02-16 Hoechst Aktiengesellschaft Process for the preparation of 2,4-dichloro-5-fluorobenzonitrile
DE4123322C2 (de) * 1991-07-13 2003-04-03 Clariant Gmbh 2-Chlor-3,4,5-trifluorbenzoesäure 2,2'-Dichlor-3,4,5-trifluoracetophenon, 2,2',2'-Trichlor-3,4,5-trifluoracetophenon, 5,2'-Dichlor-2,3,4-trifluoracetophenon und 5,2',2'-Trichlor-2,3,4-trifluoracetophenon und Verfahren zur Herstellung dieser Verbindungen und der isomeren 5-Chlor-2,3,4-trifluorbenzoesäure

Also Published As

Publication number Publication date
EP0608714B1 (de) 1997-05-02
EP0608714A1 (de) 1994-08-03
CA2114504A1 (en) 1994-07-30
DE59402562D1 (de) 1997-06-05
US5473095A (en) 1995-12-05
JPH06316545A (ja) 1994-11-15

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