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Title:
PREPARATION OF BENZOQUINONE
Document Type and Number:
Japanese Patent JPH07196574
Kind Code:
A
Abstract:

PURPOSE: To obtain benzoquinones of high purity in high yield by oxidizing a phenol with the use of a specific oxidizing agent such as oxygen in the presence of a specific oxygen-transferring catalyst.

CONSTITUTION: In the presence of a diluent and an oxygen-transferring catalyst containing a heavy metal ion such as an iron-, manganese- or chromium- tetraza[14]annullene, a phenol of formula I (wherein R1-R4 are each H, 1-4C alkyl, 1-4C alkoxy, aryloxy, 1-4C alkylsulfonyl, arylsulfonyl, hydroxysulfonyl, OH or a halogen; and X is H or OH) is oxidized by using oxygen, hydrogen peroxide or a compound which liberates hydrogen peroxide, an organic hydroperoxide, a percarboxylic acid or peroxomonosulfuric acid as the oxidizing agent to obtain a desired compound of formula II (wherein (n) is 0 or 1).


Inventors:
Gessner, Thomas
Application Number:
JP1994000313711
Publication Date:
August 01, 1995
Filing Date:
December 16, 1994
Export Citation:
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Assignee:
BASF AG
International Classes:
C07C46/02; B01J31/18; C07C46/06; C07C46/08; C07C50/04; C07C303/22; C07C303/32; C09B13/00; C07C309/25; (IPC1-7): C07C50/04; C07C46/02
Attorney, Agent or Firm:
矢野 敏雄 (外2名)



 
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