ES2070545T3 - Procedimiento para la preparacion de acido 2,3,4,5-tetrafluoro-benzoico. - Google Patents

Procedimiento para la preparacion de acido 2,3,4,5-tetrafluoro-benzoico.

Info

Publication number
ES2070545T3
ES2070545T3 ES92106418T ES92106418T ES2070545T3 ES 2070545 T3 ES2070545 T3 ES 2070545T3 ES 92106418 T ES92106418 T ES 92106418T ES 92106418 T ES92106418 T ES 92106418T ES 2070545 T3 ES2070545 T3 ES 2070545T3
Authority
ES
Spain
Prior art keywords
procedure
chlorine
arilo
rest
groups
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
ES92106418T
Other languages
English (en)
Inventor
Theodor Dr Papenfuhs
Ralf Dr Pfirmann
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 ES2070545T3 publication Critical patent/ES2070545T3/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
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/04—Monocyclic monocarboxylic acids
    • C07C63/06—Benzoic acid
    • C07C63/10—Halides thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • 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
    • C07C51/377—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
    • C07C51/38—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups by decarboxylation

Landscapes

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

Abstract

PROCEDIMIENTO PARA LA PRODUCCION DE ACIDO 2,3,4,5 TETRAFLUORBENZOICO DE LA FORMULA (1) CALENTANDO EN MEDIO ACUOSO, CON UNOS VALORES DE PH DE APROX. 1 HASTA + 1, A TEMPERATURAS DE APROX. 160 HASTA 220 (GRADOS) C, N AMINOTETRAFLUORFTALIMIDA DE LA FORMULA (2) EN DONDE X EQUIVALE AL RESTO EN DONDE R1, R2 EQUIVALEN A UN ATOMO DE HIDROGENO, UN GRUPO ALQUILO (C1 GRUPO ARILO, UN GRUPO ALQUILO (C1 EN DONDE LOS GRUPOS ARILO Y ARILO EO AROMATICO PUEDEN ESTAR SUSTITUIDOS POR ATOMOS DE FLUOR Y/O CLORO Y/O GRUPOS ALQUILO (C1 A UN RESTO FTALOILO, QUE PUEDE ESTAR SUSTITUIDO EN EL ANILLO AROMATICO MEDIANTE 4 ATOMOS DE CLORO O 4 ATOMOS DE FLUOR, EN DONDE X REPRESENTA AL RESTO QUE PUEDE ESTAR SUSTITUIDO EN EL NUCLEO AROMATICO MEDIANTE ATOMOS DE FLUOR Y/O CLORO Y/O GRUPOS ALQUILO (C1
ES92106418T 1991-04-25 1992-04-14 Procedimiento para la preparacion de acido 2,3,4,5-tetrafluoro-benzoico. Expired - Lifetime ES2070545T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4113462 1991-04-25

Publications (1)

Publication Number Publication Date
ES2070545T3 true ES2070545T3 (es) 1995-06-01

Family

ID=6430310

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92106418T Expired - Lifetime ES2070545T3 (es) 1991-04-25 1992-04-14 Procedimiento para la preparacion de acido 2,3,4,5-tetrafluoro-benzoico.

Country Status (7)

Country Link
US (1) US5179230A (es)
EP (1) EP0510490B1 (es)
JP (1) JP3220508B2 (es)
KR (1) KR920019718A (es)
CA (1) CA2067075A1 (es)
DE (1) DE59201378D1 (es)
ES (1) ES2070545T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59302798D1 (de) * 1992-07-10 1996-07-11 Hoechst Ag Verfahren zur Herstellung von Tetrafluorphthalsäure und/oder Tetrafluorphthalsäureanhydrid
US6187931B1 (en) 1999-04-06 2001-02-13 Albemarle Corporation Process for making fluorophthalimides
EP2137120A2 (en) * 2007-04-12 2009-12-30 Dow Global Technologies Inc. Conversion of a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3246009A (en) * 1963-08-27 1966-04-12 Smith Kline French Lab Trifluoromethylphthalimides
GB2134900B (en) * 1983-02-15 1986-06-25 Ici Plc Process for the preparation of cyanotetrachlorobenzenes
GB8324902D0 (en) * 1983-09-16 1983-10-19 Ici Plc Chemical process
US4769492A (en) * 1985-03-13 1988-09-06 Nippon Shokubai Kagaku Kogyo Co., Ltd. Method for production of 2,3,4,5-tetrafluorobenzoic acid
US4782180A (en) * 1985-09-09 1988-11-01 Warner-Lambert Company Process for tetrafluorobenzoic acid
JPS63258442A (ja) * 1986-08-18 1988-10-25 Sds Biotech Kk テトラフルオロフタル酸の製造方法
DE3810093A1 (de) * 1988-03-25 1989-10-05 Bayer Ag Verfahren zur herstellung von tetrafluorbenzoesaeure und deren saeurehalogeniden
JP3072516B2 (ja) * 1988-07-25 2000-07-31 富士ゼロックス株式会社 文書編集装置
DE68922353T2 (de) * 1988-08-26 1996-01-18 Asahi Glass Co Ltd Kernfluorierte aromatische Carboxylate und ihre Herstellungsverfahren.

Also Published As

Publication number Publication date
EP0510490A2 (de) 1992-10-28
JPH07165665A (ja) 1995-06-27
US5179230A (en) 1993-01-12
CA2067075A1 (en) 1992-10-26
KR920019718A (ko) 1992-11-19
DE59201378D1 (de) 1995-03-23
EP0510490A3 (en) 1993-02-24
EP0510490B1 (de) 1995-02-15
JP3220508B2 (ja) 2001-10-22

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