Preparation of mono-tertiary butylhydroquinone

Details Preparation of mono-tertiary butylhydroquinone Preparation of mono-tertiary butylhydroquinone

1980-11-20

1982-04-06

Lone, Werren B.

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

Organic compounds

Oxygen containing

568788, 568793, 568785, 568790, C07C 3711, C07C 3908

Patent

active

043237134

ABSTRACT:
Hydroquinone is subjected to an alkylation reaction utilizing isobutylene or t-butyl alcohol as the alkylating agent to obtain t-butyl hydroquinone. The alkylation reaction is effected in the presence of an acidic catalyst such as phosphoric acid at temperatures ranging from about 75.degree. to about 200.degree. C. and a pressure in the range of from about atmospheric to about 100 atmospheres. By employing a mixture of a nonpolar hydrocarbon solvent such as xylene and an aliphatic ketone such as 2-heptanone, it is possible to obtain a greater ratio of mono-alkylated product to di-alkylated product.

REFERENCES:
patent: 2147256 (1939-02-01), Ipatieff
patent: 2722556 (1955-11-01), Young
patent: 2767230 (1956-10-01), Brown

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