Method for the hydrodehalogenation of halogenated meta-cresols

Details Method for the hydrodehalogenation of halogenated meta-cresols Method for the hydrodehalogenation of halogenated meta-cresols

2008-07-15

2008-07-15

Witherspoon, Sikarl A (Department: 1621)

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

Organic compounds

Oxygen containing

C568S779000, C568S797000

Reexamination Certificate

active

07399890

ABSTRACT:
The present process serves for the hydrodehalogenation of halogenated meta-cresols of the formula (I)in which the R1to R4radicals are each as defined in the description, and is characterized in that halogenated meta-cresols of the formula (I) are contacted with a catalyst which has been prepared by applying one or more salts of palladium and/or platinum and optionally copper salts to an aluminum oxide or titanium oxide support material, together with hydrogen, at temperatures between 100 and 250° C.

REFERENCES:
patent: 2765335 (1956-10-01), Brown et al.
patent: 4480140 (1984-10-01), Leston
patent: 2512509 (1976-09-01), None
Pandey, Paras N., et al.; “Palladium-Catalyzed Hydrodehalogenation of Haloaromatic Compounds,”Synthesis; 1982, pp. 876-878.

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