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Patent Searching and Data


Title:
PRODUCTION OF AROMATIC CARBOXYLIC ACID
Document Type and Number:
Japanese Patent JPH0769936
Kind Code:
A
Abstract:

PURPOSE: To produce an arom. carboxylic acid in a high yield at a high selectivity by an easier and more economical process than conventional processes by directly oxidizing a methyl-substd. arom. compd.

CONSTITUTION: A compd. of the formula: Ar(CH3)n (wherein Ar is an iso- or heteroarom. group optionally having inert substituents) is oxidized with a nitrogen/oxygen compd. having an oxidizing action (e.g. nitric acid, dinitrogen pentaoxide, or nitrogen dioxide) in a liq. phase in the presence of sulfuric acid and a vanadium compd. (e.g. vanadium pentaoxide) in an amt. thereof of 20-100 mol.% (based on the raw material compd.) at 120-180°C, pref. 130-170°C, to give an arom. carboxylic acid of the formula: Ar(COOH)n. This process is effective in producing a heteroarom. carboxylic acid, esp. quinolinecarboxylic acid.


Inventors:
HERUMUUTO HAAGEN
ANDOREASU GURUDONAA
Application Number:
JP18253794A
Publication Date:
March 14, 1995
Filing Date:
August 03, 1994
Export Citation:
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Assignee:
BASF AG
International Classes:
B01J27/02; B01J23/22; C07B41/08; C07B61/00; C07C51/275; C07C63/00; C07D215/48; (IPC1-7): C07B41/08; B01J27/02; C07C51/275; C07C63/00; C07D215/48
Attorney, Agent or Firm:
Toshio Yano (2 outside)