Preparation of p-hydroxybenzaldehyde derivatives

A 4-hydroxybenzaldehyde derivative of the formula: (I) wherein each of R1, R2, R3 and R4 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...

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Bibliographic Details
Main Authors ARATANI; TADATOSHI, NISHIZAWA; KANJI, HAMADA; KAZUHIKO
Format Patent
LanguageEnglish
Published 31.01.1984
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A 4-hydroxybenzaldehyde derivative of the formula: (I) wherein each of R1, R2, R3 and R4 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: (II) wherein each of R1, R2, R3 and R4 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.
Bibliography:Application Number: US19810289991