Process are the preparation of p-hydroxy-benzaldehydes

Details Process are the preparation of p-hydroxy-benzaldehydes Process are the preparation of p-hydroxy-benzaldehydes

1989-02-16

1990-05-29

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568431, C07C 4536

Patent

active

049297660

ABSTRACT:
p-Hydroxy-benzaldehydes can be obtained by oxidation of the corresponding p-cresols with oxygen in the presence of basic substances in a solvent, the reaction being carried out in the additional presence of a chelate complex of iron and/or manganese. If desired, the reaction can be carried out in the presence of further metal salts.

REFERENCES:
patent: 3073867 (1963-01-01), Offenhauer et al.
patent: 3666815 (1972-05-01), Scheltus
patent: 4453016 (1984-06-01), Au et al.
patent: 4471140 (1984-09-01), Au
patent: 4481374 (1984-11-01), Christidis et al.
patent: 4772754 (1988-09-01), Rohrscheid
Patent Abstracts of Japan, Band 11, Nr. 365(C-460) [2812], 27. Nov. 1987; & JP-A-62 135 443 (C K Fine Kemikaruzu K.K.) 18-06-1987 *Zusammenfassung*.

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