Process for producing pyrogallol

Details Process for producing pyrogallol Process for producing pyrogallol

1980-12-08

1982-03-09

Lone, Werren B.

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

Organic compounds

Oxygen containing

568740, 568763, 568799, C07C 3706

Patent

active

043190545

ABSTRACT:
There is disclosed a process for producing pyrogallol by dehydrogenation of cyclohexane-1,2,3-triol in the presence of a platinum group metal catalyst in an inert gas stream. The catalyst contains, as modifier, (a) at least one alkali metal salt and/or (b) at least one member selected from the group consisting of gold, tellurium, silver, arsenic, selenium, indium, antimony, bismuth, copper and zinc, with the Pd-Te catalyst being preferred. The catalyst ingredients are supported on a carrier. The process gives high selectivity of pyrogallol.

REFERENCES:
patent: 3780114 (1973-12-01), Dewaele
patent: 4046817 (1977-09-01), Shipchandler
patent: 4160113 (1979-07-01), Muller et al.
patent: 4254288 (1981-03-01), Gladwin
Doklady Akademii Nau., USSR, pp. 1354-1355, 198 (1971).
Doklady Akademii Nauk., pp. 145-147, 185 (1969).

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