WO2001055073A3 - Oxidation of o-xylol to produce o-tolyl acid - Google Patents

Oxidation of o-xylol to produce o-tolyl acid Download PDF

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Publication number
WO2001055073A3
WO2001055073A3 PCT/EP2001/000707 EP0100707W WO0155073A3 WO 2001055073 A3 WO2001055073 A3 WO 2001055073A3 EP 0100707 W EP0100707 W EP 0100707W WO 0155073 A3 WO0155073 A3 WO 0155073A3
Authority
WO
WIPO (PCT)
Prior art keywords
xylol
produce
oxidation
tolyl acid
tolyl
Prior art date
Application number
PCT/EP2001/000707
Other languages
German (de)
French (fr)
Other versions
WO2001055073A2 (en
Inventor
Andreas Walch
Ulrich Kammel
Original Assignee
Basf Ag
Andreas Walch
Ulrich Kammel
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 Basf Ag, Andreas Walch, Ulrich Kammel filed Critical Basf Ag
Priority to AU2001228481A priority Critical patent/AU2001228481A1/en
Publication of WO2001055073A2 publication Critical patent/WO2001055073A2/en
Publication of WO2001055073A3 publication Critical patent/WO2001055073A3/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (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)
  • Catalysts (AREA)

Abstract

The invention relates to a method for oxidizing o-xylol with oxygen, preferably mixed with an inert gas, especially air, while adding a catalyst, in order to produce a mixture of oxidation products of the o-xylol. The selectivity of the reaction can be increased by adding an aldehyde to the o-xylol.
PCT/EP2001/000707 2000-01-24 2001-01-23 Oxidation of o-xylol to produce o-tolyl acid WO2001055073A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001228481A AU2001228481A1 (en) 2000-01-24 2001-01-23 Oxidation of o-xylol to produce o-tolyl acid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10002807.1 2000-01-24
DE2000102807 DE10002807A1 (en) 2000-01-24 2000-01-24 Catalytic oxidation of o-xylene, especially in manufacture of phthalic anhydride, comprises adding o-tolualdehyde to o-xylene to compensate for catalyst activity loss

Publications (2)

Publication Number Publication Date
WO2001055073A2 WO2001055073A2 (en) 2001-08-02
WO2001055073A3 true WO2001055073A3 (en) 2001-12-20

Family

ID=7628476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/000707 WO2001055073A2 (en) 2000-01-24 2001-01-23 Oxidation of o-xylol to produce o-tolyl acid

Country Status (3)

Country Link
AU (1) AU2001228481A1 (en)
DE (1) DE10002807A1 (en)
WO (1) WO2001055073A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB680571A (en) * 1949-03-22 1952-10-08 Monsanto Chemicals Improvements in or relating to liquid phase oxidation
GB815198A (en) * 1957-06-13 1959-06-17 Du Pont Improvements in or relating to the production of aromatic acid esters
GB890387A (en) * 1958-08-23 1962-02-28 Basf Ag Improvements in the production of terephthalic acid
EP0351627A1 (en) * 1988-07-16 1990-01-24 Bayer Ag Process for the recovery of ortho-toluic acid by distillation
US5679847A (en) * 1995-05-30 1997-10-21 Mitsubishi Gas Chemical Company, Inc. Process for producing terephthalic acid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB680571A (en) * 1949-03-22 1952-10-08 Monsanto Chemicals Improvements in or relating to liquid phase oxidation
GB815198A (en) * 1957-06-13 1959-06-17 Du Pont Improvements in or relating to the production of aromatic acid esters
GB890387A (en) * 1958-08-23 1962-02-28 Basf Ag Improvements in the production of terephthalic acid
EP0351627A1 (en) * 1988-07-16 1990-01-24 Bayer Ag Process for the recovery of ortho-toluic acid by distillation
US5679847A (en) * 1995-05-30 1997-10-21 Mitsubishi Gas Chemical Company, Inc. Process for producing terephthalic acid

Also Published As

Publication number Publication date
WO2001055073A2 (en) 2001-08-02
DE10002807A1 (en) 2001-07-26
AU2001228481A1 (en) 2001-08-07

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