Oxidation of catechol in higher plants. I. Enzymic conversion of catechol to 3,4,3′,4′-tetrahydroxydiphenyl

Abstract
Acetone-dried powders prepared from the leaves of Tecoma stans oxidized catechol to 3,4,3′,4′-tetra-hydroxydiphenyl and diphenylenedioxide-2,3-quinone. Extracts of acetone powder when fractionated with acetone and adsorbed onto and eluted from alumina Cγ gave preparations which catalyzed the stoichiometric formation of 1 mole of 3,4,3′,4′-tetrahydroxydiphenyl from 2 moles of catechol

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