METHOD FOR OBTAINING 4-TERT-BUTYLPYROCATECHIN Russian patent published in 2022 - IPC C07C37/60 C07C39/08 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method for producing 4-tert-butylpyrocatechin, which is widely used as an inhibitor of polymerization of diene and vinyl aromatic hydrocarbons, as well as a stabilizer of styrene, polymer materials, as antioxidants of oils, waxes and animal fats, in the production of insecticidal compounds. The method consists in the mild oxidation of 4-tert-butylphenol with a solution of a perox compound, as which sodium persulfate is used, in NaOH at a molar ratio of 4-tert-butylphenol: NaOH 1:5 and a molar ratio of 4-tert-butylphenol: sodium persulfate 1:1-1:2. In this case, the oxidation is carried out for 2 hours at a temperature of 20-40°C in the presence of a catalyst, which is used as a catalyst for the interphase transfer of a number of polyethylene glycols from PEG-400 to PEG-2000 in an amount of 5 to 10 wt. % relative to the mass of 4-tert-butylphenol.

EFFECT: simplification of the oxidation process and an increase in the yield of the target product.

1 cl, 1 tbl, 14 ex