ES2077914T3 - Procedimiento de obtencion de acido 3,4,6-trifluorftalico y de su anhidrido. - Google Patents

Procedimiento de obtencion de acido 3,4,6-trifluorftalico y de su anhidrido.

Info

Publication number
ES2077914T3
ES2077914T3 ES92108508T ES92108508T ES2077914T3 ES 2077914 T3 ES2077914 T3 ES 2077914T3 ES 92108508 T ES92108508 T ES 92108508T ES 92108508 T ES92108508 T ES 92108508T ES 2077914 T3 ES2077914 T3 ES 2077914T3
Authority
ES
Spain
Prior art keywords
acid
anhydride
trifluorphthalic
procedure
obtaining
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
ES92108508T
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 ES2077914T3 publication Critical patent/ES2077914T3/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
    • C07C51/377—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
    • 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

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)
  • Furan Compounds (AREA)

Abstract

PROCEDIMIENTO PARA LA OBTENCION DE ACIDO 3,4,6 TRIFLUORFTALICO DE LA FORMULA (1) O SU ANHIDRIDO CON UNOS BUENOS RENDIMIENTOS Y FORMA VENTAJOSA, DESHALOGENANDO EL ANHIDRIDO DEL ACIDO TETRAFLUORFTALICO DE LA FORMULA (2) O ACIDO TETRAFLUORFTALICO EN UN MEDIO ACUOSO-ALCALINO CON ZINC A TEMPERATURAS DE APROX. 20 (GRADOS) C HASTA APROX. 160 (GRADOS) C Y, DADO EL CASO, EL ACIDO 3,4,6 IDO DE LA FORMA CONOCIDA MEDIANTE DESHIDRATACION.
ES92108508T 1991-05-22 1992-05-20 Procedimiento de obtencion de acido 3,4,6-trifluorftalico y de su anhidrido. Expired - Lifetime ES2077914T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4116625 1991-05-22

Publications (1)

Publication Number Publication Date
ES2077914T3 true ES2077914T3 (es) 1995-12-01

Family

ID=6432132

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92108508T Expired - Lifetime ES2077914T3 (es) 1991-05-22 1992-05-20 Procedimiento de obtencion de acido 3,4,6-trifluorftalico y de su anhidrido.

Country Status (8)

Country Link
US (1) US5200556A (es)
EP (1) EP0514863B1 (es)
JP (1) JPH0665144A (es)
AU (1) AU646563B2 (es)
CA (1) CA2069140A1 (es)
DE (1) DE59203632D1 (es)
ES (1) ES2077914T3 (es)
IE (1) IE921640A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405995A (en) * 1994-06-20 1995-04-11 Occidental Chemical Corporation Difluorophthalic compounds and their preparation
JP2001139551A (ja) * 1999-11-15 2001-05-22 Tohkem Products Corp ２，３，５，６−テトラフルオロピリジンの製造方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007943A (en) * 1961-11-07 Hoffmann
US1935648A (en) * 1931-04-03 1933-11-21 Monsanto Chemicals Manufacture of halogenated aromatic compounds
US2460564A (en) * 1946-09-11 1949-02-01 Goodrich Co B F Chlorination of phthalic anhydride
US3092641A (en) * 1958-04-30 1963-06-04 Hooker Chemical Corp Diels-alder adducts of perchlorocoumalin
US3240792A (en) * 1961-03-22 1966-03-15 Imp Smelting Corp Ltd Tetrafluorophthalic acids and derivatives
GB958294A (en) * 1961-12-18 1964-05-21 Kalk Chemische Fabrik Gmbh Process for the production of tetrabromophthalic acid anhydride
DE1518647A1 (de) * 1965-05-06 1969-02-13 Kalk Chemische Fabrik Gmbh Verfahren zur Herstellung von Tetrabromphthalsaeureanhydrid
JPS5822460B2 (ja) * 1977-04-06 1983-05-09 三井東圧化学株式会社 ４−メチルフタル酸の核塩素化物及びそれらの製造法
US4689179A (en) * 1984-07-30 1987-08-25 Nippon Shokubai Kagaku Kogyo Co., Ltd. Method for production of fluorinated quinones
US4814467A (en) * 1987-06-04 1989-03-21 Ici Americas Inc. Processes using a phosphorus complex
JP2567004B2 (ja) * 1987-12-18 1996-12-25 日本カーバイド工業株式会社 ２，４，５−トリフルオロ安息香酸の製造方法
JPH02306945A (ja) * 1989-05-23 1990-12-20 Nippon Carbide Ind Co Inc テトラフルオロ無水フタル酸及びその誘導体の製法
US4962206A (en) * 1989-11-20 1990-10-09 Occidental Chemical Corporation Process for the preparation of 4-bromophthalic anhydride
US5086188A (en) * 1991-01-16 1992-02-04 Occidental Chemical Corporation Preparation of 3,5-dichlorophthalic acid and 3,5-dichlorophthalic anhydride

Also Published As

Publication number Publication date
IE921640A1 (en) 1992-12-02
DE59203632D1 (de) 1995-10-19
EP0514863B1 (de) 1995-09-13
EP0514863A3 (en) 1993-03-17
CA2069140A1 (en) 1992-11-23
US5200556A (en) 1993-04-06
JPH0665144A (ja) 1994-03-08
AU1706792A (en) 1992-11-26
EP0514863A2 (de) 1992-11-25
AU646563B2 (en) 1994-02-24

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