Oxidation process

Details Oxidation process Oxidation process

1993-05-10

1994-10-04

Lone, Werren B.

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

Organic compounds

Oxygen containing

568420, 568426, C07C 4527, C07C 4530

Patent

active

053528409

ABSTRACT:
Substituting aqueous hydrogen peroxide/hydrogen bromide for bromine in a known process for producing a ditertiaryalkyl substituted hydroxybenzaldehyde such as ditertiarybutyl hydroxybenzaldehyde from the corresponding ditertiaryalkyl substituted methylphenol results in a substantially impaired yield of product.
Improved yields are obtained by employing a reaction temperature of at least 40.degree. C., preferably 50.degree. to 80.degree. C. in conjunction with a hydrophobic solvent such as chloroform. Preferably, the process employs very concentrated hydrogen peroxide solution, 65% to 75% w/w, introduced into the bromide-containing reaction mixture during a period of from 25 to 75 minutes.

REFERENCES:
patent: 4480135 (1984-10-01), Esposito et al.

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