Process for producing p-hydroxybenzaldehyde

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

1978-08-30

1980-03-25

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260580, 260141, C07C 4500

Patent

active

041950410

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 et al.
patent: 3365500 (1968-01-01), Pontz
Organic Synthesis Collective, vol. 3, (1955), pp. 130-131.
Organic Synthesis, vol. 31, (1951), pp. 6 & 7.

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