Preparation of hydroxybenzaldehyes

Details Preparation of hydroxybenzaldehyes Preparation of hydroxybenzaldehyes

1997-11-18

1998-09-22

Geist, Gary

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

568432, C07D 1102

Patent

active

058115595

ABSTRACT:
Hydroxybenzaldehydes, for example salicylaldehyde, are prepared in high yields by oxidizing the corresponding hydroxybenzyl alcohols, e.g., saligenol, with molecular oxygen or an oxygen-containing gas, in liquid phase, in an aqueous reaction medium containing an alkali, in the presence of (i) a catalytically effective amount of a platinum catalyst and (ii) a cocatalytically effective amount of boron and bismuth compounds.

REFERENCES:
patent: 3290393 (1966-12-01), Marchand et al.
patent: 3321526 (1967-05-01), Marchand et al.
patent: 4026950 (1977-05-01), LeLudec
patent: 4306083 (1981-12-01), Ma
patent: 4351962 (1982-09-01), Gradeff et al.
patent: 4366325 (1982-12-01), Wedemeyer et al.
Chemical Abstracts, vol. 86, No. 11, Mar. 13, 1977, Columbus, Ohio; abstract No. 7212p, Cerveny, Libor et al., p. 568, col. 1; & Chem.Tech., vol. 28, p. 9, 1976.

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