JPS646235A - 3-hydroxy-2,4,5-trifluorobenzoic acid - Google Patents

3-hydroxy-2,4,5-trifluorobenzoic acid

Info

Publication number
JPS646235A
JPS646235A JP15971287A JP15971287A JPS646235A JP S646235 A JPS646235 A JP S646235A JP 15971287 A JP15971287 A JP 15971287A JP 15971287 A JP15971287 A JP 15971287A JP S646235 A JPS646235 A JP S646235A
Authority
JP
Japan
Prior art keywords
acid
hydroxy
sulfuric acid
catalyst
raw material
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
JP15971287A
Other languages
Japanese (ja)
Other versions
JPH0610159B2 (en
Inventor
Koitsu Hirota
Osamu Kaieda
Norio Takatani
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.)
Nippon Shokubai Co Ltd
Original Assignee
Nippon Shokubai Co Ltd
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 Nippon Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to JP62159712A priority Critical patent/JPH0610159B2/en
Publication of JPS646235A publication Critical patent/JPS646235A/en
Publication of JPH0610159B2 publication Critical patent/JPH0610159B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

NEW MATERIAL:3-Hydroxy-2,4,5-trifluorobenzoic acid shown by the formula. USE:Useful as a raw material for high polymer materials, drugs and agricultural chemicals. PREPARATION:4-Hydroxy-3,5,6-trifluorophthalic acid is decarboxylated in the presence of a catalyst such as an acid or alkali under heating to give a compound shown by the formula. When especially sulfuric acid is used as the catalyst, the concentration of sulfuric acid is preferably 50-80wt.% and the amount of sulfuric acid used is preferably 300-700pts.wt. aqueous solution of sulfuric acid based on 100pts.wt. 4-hydroxy-3,5,6-trifluorophthalic acid. When an alkaline substance is used as the catalyst, the amount of the alkali used is preferably 0.01-0.4mol. based on 1mol. of the raw material and the concentration of the preparation is 300-700pts.wt. water based on 100pts.wt. raw material. The reaction is carried out at normal pressure in the case of use of the sulfuric acid and under pressure in the case of use of the alkali.
JP62159712A 1987-06-29 1987-06-29 Process for producing 3-hydroxy-2,4,5-trifluorobenzoic acid Expired - Lifetime JPH0610159B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62159712A JPH0610159B2 (en) 1987-06-29 1987-06-29 Process for producing 3-hydroxy-2,4,5-trifluorobenzoic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62159712A JPH0610159B2 (en) 1987-06-29 1987-06-29 Process for producing 3-hydroxy-2,4,5-trifluorobenzoic acid

Publications (2)

Publication Number Publication Date
JPS646235A true JPS646235A (en) 1989-01-10
JPH0610159B2 JPH0610159B2 (en) 1994-02-09

Family

ID=15699640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62159712A Expired - Lifetime JPH0610159B2 (en) 1987-06-29 1987-06-29 Process for producing 3-hydroxy-2,4,5-trifluorobenzoic acid

Country Status (1)

Country Link
JP (1) JPH0610159B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01268662A (en) * 1988-04-21 1989-10-26 Nippon Carbide Ind Co Inc Production of 2,4,5-trifluoro-3-hydroxybenzoic acid and production of 2,4,5-trifluoro-3-alkoxybenzoic acid
US4948249A (en) * 1987-06-23 1990-08-14 Hopkins Manufacturing Corporation Headlight aiming and light pattern testing apparatus and method
US5233082A (en) * 1982-11-16 1993-08-03 Occidental Chemical Corporation Method of making 3-hydroxy-2,4,5-trifluorobenzoic acid
US5380926A (en) * 1994-03-28 1995-01-10 Occidental Chemical Corporation Method of making 3-methoxy-2,4,5-trifluorobenzoic acid

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63264440A (en) * 1986-12-04 1988-11-01 Ube Ind Ltd 2,4,5-trifluoro-3-hydroxybenzoic acid and production thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63264440A (en) * 1986-12-04 1988-11-01 Ube Ind Ltd 2,4,5-trifluoro-3-hydroxybenzoic acid and production thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233082A (en) * 1982-11-16 1993-08-03 Occidental Chemical Corporation Method of making 3-hydroxy-2,4,5-trifluorobenzoic acid
US4948249A (en) * 1987-06-23 1990-08-14 Hopkins Manufacturing Corporation Headlight aiming and light pattern testing apparatus and method
JPH01268662A (en) * 1988-04-21 1989-10-26 Nippon Carbide Ind Co Inc Production of 2,4,5-trifluoro-3-hydroxybenzoic acid and production of 2,4,5-trifluoro-3-alkoxybenzoic acid
US5380926A (en) * 1994-03-28 1995-01-10 Occidental Chemical Corporation Method of making 3-methoxy-2,4,5-trifluorobenzoic acid

Also Published As

Publication number Publication date
JPH0610159B2 (en) 1994-02-09

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