Preparation of ortho-alkylated phenols

Details Preparation of ortho-alkylated phenols Preparation of ortho-alkylated phenols

1984-04-20

1985-08-27

Lone, Werren B.

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

Organic compounds

Oxygen containing

568784, C07C 3700, C07C 3906

Patent

active

045380082

ABSTRACT:
Secondary or tertiary alkyl phenyl ethers may be induced to undergo thermal rearrangement on alumina, aluminum phosphate, or a silica-modified alumina as catalyst to afford the isomeric ortho-alkylphenol. Such rearrangement generally occurs under milder conditions than does the alkylation of a phenol with an olefin using the same alumina as an alkylating catalyst with high regioselectivity and good control over the extent of alkylation.

REFERENCES:
patent: 2289886 (1942-07-01), Schmerling
patent: 3342750 (1967-09-01), Kearby
patent: 3655780 (1972-04-01), Kohn et al.
patent: 4202798 (1980-05-01), Johnson et al.
patent: 4283571 (1981-08-01), Keim et al.
patent: 4283572 (1981-08-01), Klicker
patent: 4447657 (1984-05-01), Firth et al.
patent: 4465871 (1984-08-01), Firth et al.
Dewar et al., "Jour. Chem. Soc.", (1960), pp. 959-963.

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