Process for producing p-hydroxybenzaldehyde

Details Process for producing p-hydroxybenzaldehyde Process for producing p-hydroxybenzaldehyde

1979-07-06

1981-06-16

Douglas, Winston A.

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

Organic compounds

Amino nitrogen containing

C07C 8511, C07C 8900

Patent

active

042739411

ABSTRACT:
A process for producing p-hydroxybenzaldehyde through p-aminobenzaldehyde from p-nitrotoluene, comprising reacting p-nitrotoluene with sodium polysulphide in an alcohol-alkali aqueous solution mixed solvent in the presence or absence of an aprotic polar compound to produce p-aminobenzaldehyde, diazotizing the p-aminobenzaldehyde and then hydrolyzing the diazotized p-aminobenzaldehyde to produce p-hydroxybenzaldehyde.

REFERENCES:
patent: 1910679 (1933-05-01), Crawford
patent: 3365500 (1968-01-01), Pontz
patent: 4195041 (1980-03-01), Kawamara et al.
Organic Synthesis Collective, vol. 3, (1955), pp. 130-131.
Organic Synthesis, vol. 31, (1951), pp. 6 and 7.

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