Process for production of cresols

Details Process for production of cresols Process for production of cresols

1995-02-23

1997-02-04

Siegel, Alan

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

Organic compounds

Oxygen containing

568754, 568799, C07C 3708, C07C 3706, C07C 3768

Patent

active

056000260

ABSTRACT:
There is disclosed a process for the production of cresols, including the steps of: (a) conducting oxygenation of cymene with oxygen gas or an oxygen-containing gas, thereby obtaining a solution of oxygenation products containing tertiary and primary hydroperoxides of cymene; (b) reacting the solution of oxygenation products obtained in the step (a) with an organic quaternary ammonium salt and an alkali, or with an organic quaternary ammonium hydroxide, thereby decreasing the content of primary hydroperoxide; (c) subjecting the reaction mixture in the step (b) to decomposition in the presence of a catalyst; and (d) subjecting the decomposition mixture in the step (c) to hydrogenation, thereby obtaining the desired cresols.

REFERENCES:
patent: 2728797 (1955-12-01), Filar
patent: 4431849 (1984-02-01), Colvin
patent: 5166451 (1992-11-01), Takeshita et al.
F. Katashi et al., Chemical Abstracts, vol. 88, No. 25, Jun. 1978, p. 722, col. 1, Abstract No. 190380.

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