Abstract
1. The sequence of hydrogenation of carvone on platinum and palladium catalysts was investigated. 2. The hydrogenation of carvone on Pd-black proceeds nonselectively with the formation of carvotanacetone and carvomenthone. As a result of parallel reactions of isomerization and irreversible catalysis, carvacrol is formed. Palladium on carbon catalyzes the process differently from Pd-black. 3. Hydrogenation of carvone on Pt-black proceeds selectively through the successive formation of carvotanacetone, isomeric carvomenthones, and isomeric carvomenthols.
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