Process for preparation of 2,3,5-trimethylhydroquinone

Details Process for preparation of 2,3,5-trimethylhydroquinone Process for preparation of 2,3,5-trimethylhydroquinone

1987-09-24

1988-09-06

Lone, Werren B.

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

Organic compounds

Oxygen containing

568766, C07C 3707, C07C 3700

Patent

active

047695005

ABSTRACT:
A process for preparation of 2,3,5-trimethylhydroquinone (TMHQ) from 2,3,5-trimethylbenzoquinone (TMBQ) is disclosed, comprising reducing TMBQ with hydrogen in the presence of a platinum group metal catalyst with a silica alumina support containing an alkali metal component. This process permits preparation of TMHQ of purity as high as more than 99%.

REFERENCES:
patent: 2229573 (1941-01-01), Jung
patent: 3723541 (1973-03-01), Schuster et al.
patent: 3839468 (1974-10-01), Tamai et al.
patent: 3842130 (1974-10-01), Kawaguchi et al.
patent: 4018833 (1977-04-01), Muller et al.
patent: 4072660 (1978-02-01), Muller et al.

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