ABSTRACT
Abstract Catalytic properties of the palladium nanoparticles impregnated into various synthetic polymeric matrixes (polydiallyldimethylammonium chloride (PDADMAC), poly (ethylene oxide)-block-polyvinylpyridine (PEO-b-PVP), polystyrene-block-poly-4vinylpyridine (PS-b-P4VP), hypercrosslinked polystyrene (HPS) etc.) were studied in selective hydrogenation of long-chain acetylenic alcohols to olefinic ones, which are the intermediates in the production of vitamins A, K, E. We investigated both heterogeneous and homogeneous polymer containing catalysts. In the case of heterogeneous catalysts Pd nanoparticles formed in polyelectrolyte layers were deposited on γ-Al2O3. HPS was also investigated as a heterogeneous catalyst on the base of metal contained polymeric matrix. For all the catalysts, the optimal conditions (solvent, temperature, pH, catalyst and substrate amount, stirring) providing the high selectivity of hydrogenation up to 99.5% were found. Introduction The most important problem in industrial catalysis is the problem of achieving high selectivity, activity and technological performance of catalytic systems used in fine organic synthesis as it is connected with economical indices, quality of the target products and ecological situation. In this study we report on the reaction of selective hydrogenation of DHL (3,7dimethyl-6-octaene-1-yne-3-ol, dehydrolinalool) to olefin alcohol LN (3,7-dimethyloctadiene-1, 6-ol-3, linalool). Fig. 1 shows the way of the DHL hydrogenation. In this
case DiHL (3,7-dimethyl-6-octaene-3-ol, dihydrolinalool) is an unfavorable byproduct of the reaction.
