Preparation of p-hydroxybenzaldehyde derivatives

Details Preparation of p-hydroxybenzaldehyde derivatives Preparation of p-hydroxybenzaldehyde derivatives

1981-08-04

1984-01-31

Reamer, James H.

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

Organic compounds

Oxygen containing

568626, C07C 4536

Patent

active

044291639

ABSTRACT:
A 4-hydroxybenzaldehyde derivative of the formula: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is selected from the group consisting of hydrogen atom, halogen atoms, lower alkyl groups or lower alkoxy groups, which is useful as intermediate for the production of medicines or agricultural chemicals, or as flavor, is produced by the reaction of a p-cresol derivative of the formula: ##STR2## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is as defined above, with oxygen or oxygen-containing gas in the presence of a base and a catalytic amount of cobalt compound or metallic cobalt.

REFERENCES:
patent: 3164611 (1965-01-01), Sarett
patent: 3321526 (1967-05-01), Marchand et al.
patent: 3931330 (1976-01-01), Aprahamian
patent: 4113782 (1978-09-01), Juichi et al.
Nishinaga et al., Angew. Chem., Int, Edit, vol. 14 (1975) p. 3565.
Nishinaga et al., J.A.C.S., vol. 100, pp. 1820-1825, (1978).

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