PRODUCTION OF 9,10-DIHYDRO-9,10-ETHANOANTHRACENE-9-CARBOXYLIC ACID BY OXIDATION OF CORRESPONDING ALDEHYDE

Title:

PRODUCTION OF 9,10-DIHYDRO-9,10-ETHANOANTHRACENE-9-CARBOXYLIC ACID BY OXIDATION OF CORRESPONDING ALDEHYDE

Document Type and Number:

Japanese Patent JPH10316612

Kind Code:

A

Abstract:

To produce the subject compound in high selectivity and yield by oxidizing a specific aldehyde in an organic solvent in the presence of a catalyst with oxygen or an oxygen-containing gas in no need of large amounts of chromium compound, manganese compound and an alkaline medium.

9,10-Dihydro-9,10-ethanoanthacene-9-carbaldehyde of formula I [R1 and R2 are each H, CN, OOCR4, COOR4 or (CH2)nR5 (R4 is a 1-10C alkyl, etc.; R5 is OH or a CH2-NH-1-4C alkyl); n is 1-3; R3 is H, a halogen, CN, CHO, COOH, NO2 or SO3H] is oxidized with oxygen or an oxygen-containing gas in the presence of a catalyst [Co(CH3COO)2x4H2O, Mn(CH3COO)2x4H2O] in an organic diluent (for example, a 1-6C carboxylic acid as acetic acid or propionic acid) at 15-180°C, preferably 20-120°C under the normal pressure to give the objective compound of formula II.

Inventors:

NEUMANN KARL-HEINZ DR
FIEGE HELMUT DR
KOENIG BERND-MICHAEL DR

Application Number:

JP13922298A

Publication Date:

December 02, 1998

Filing Date:

May 07, 1998

Export Citation:

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Assignee:

BAYER AG

International Classes:

C07C51/235; C07C61/39; C07C67/29; C07C69/157; (IPC1-7): C07C61/39; C07C51/235; C07C67/29; C07C69/157

Attorney, Agent or Firm:

Heiyoshi Odashima (1 person outside)

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