Process for the orthomethylation of phenolic compounds

Details Process for the orthomethylation of phenolic compounds Process for the orthomethylation of phenolic compounds

1982-12-13

1984-11-13

Lone, Werren B.

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

Organic compounds

Oxygen containing

568780, C07C 3716

Patent

active

044827580

ABSTRACT:
For the orthomethylation of phenolic compounds containing at least one hydrogen atom in the ortho position, the phenol compound is reacted with methanol in the gaseous phase in the presence of an oxidic catalyst containing iron, chromium, and cerium in an atomic ratio of Fe:Cr:Ce of 1:0.005 to 0.1:0.005 to 0.1, at temperatures of 270.degree.-450.degree. C., pressures of 1-40 bar, and rates per unit volume of 0.05-3 h.sup.-1. The temperature within the catalyst bed is maintained constant within a narrow temperature range .DELTA.T of up to 20.degree. C. The catalyst has a very long service life with a high activity, and provides a high selectivity.

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