Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1981-10-30
1983-06-14
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568794, C07C 3716
Patent
active
043884784
ABSTRACT:
This invention relates to a process for the selective ortho-alkylation of a phenolic compound having at least one ortho-positioned hydrogen atom by catalytically reacting the phenolic compound with an alcohol in the vapor phase. In this process, the reaction of the phenolic compound with the alcohol is carried out at a temperature of from 300.degree. to 550.degree. C. in the presence of a catalyst containing manganese oxide and one or more additives selected from group (A) consisting of germanium oxide, tin oxide and lead oxide, or a catalyst containing manganese oxide, one or more additives selected from the aforesaid group (A), and one or more additives selected from group (B) consisting of alkali metal oxides and alkaline earth metal oxides. The catalyst used in this invention exhibits not only excellent catalytic activity in the selective ortho-alkylation of phenols, continuous stability of the activity, good shapeability and good mechanical strength but also effective utilization of alcohols.
REFERENCES:
patent: 3959394 (1976-05-01), Tasaka et al.
patent: 3971832 (1976-07-01), Watanabe et al.
patent: 4227023 (1980-10-01), Kawamata et al.
Aoki Fukuichi
Kawamata Motoo
Kotani Makoto
Kudoh Akihide
Ohshima Kazushi
Lone Werren B.
Mitsui Toatsu Chemicals Inc.
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