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Homogeneous-catalytical vinylation of 2-hydroxy-2-phenylethanical acid was carried out. Influence of catalylists nature, temperature and duration reaction on yield of synthesized vinyl ester has been investigated. basis of natural raw materials. Based on vinyl esters of carboxylic acids, their polymers and copolymers with unsaturated compounds of the ethylene series, emulsifiers for emulsion paints have been obtained; compounds that improve the viscosity of lubricating oils and are used as crosslinking agents in the rubber industry. Synthesis of vinyl esters based on monobasic aliphatic acids has been studied by the example of acetic acid by many researchers. In this respect, the aromatic carboxylic acids remain unexplored. Goal: Synthesis of vinyl ester of mandelic acid by it's reaction with acetylene in the presence of heterogeneous catalysts, investigation of the influence of the nature of catalysts and the reaction temperature on the yield of obtained product. Methodology: Catalytic systems based on AlCl3•6H2O or zinc salt of mandelic acid with dimethylsulfoxide were prepared and heterogeneous catalytic vinylation of mandelic acid with acetylene was carried out and it's vinyl ether was obtained. Scientific Novelty. The synthesis of vinyl ester of mandelic acid with it's reactions with acetylene using the catalytic systems AlCl3•6H2O-DMSO and (C6H5CH(OH)COO)2Zn-DMSO was carried out. Obtained Data: The vinyl ester of mandelic acid was synthesized by it's vinylation in stationary heterogeneous conditions. The influence of the nature of the catalyst (AlCl3•6H2O, (C6H5CH(OH)COO)2Zn), temperature and duration of the reaction on the yield of the product was investigated. Features: • vinylation of hydroxy carboxylic acid was investigated; • the catalytic systems AlCl3•6H2O-DMSO and (C6H5CH(OH)COO)2Zn-DMSO are used; • factors influencing the yield of vinyl ester of mindalic acid and optimal conditions of it's synthesis were found.

A facile synthesis of polyethylene glycol-templated silica-titania (PEG-templated SiO 2-TiO 2) nanoparticles has been carried out using sol-gel reactions by partial-prehydrolysis of tetraethoxysilane and titanium isopropoxide. The prepared nanomaterials have been investigated by N 2 adsorption, FTIR, FT-Raman, TG-DSC, XRD, TEM, DLS, 13 C and 29 Si MAS NMR and XPS analysis to characterize the phase composition and microstructure of the samples. The photocatalytic performance of the SiO 2-TiO 2 nanoparticles was evaluated by photooxidative degradation of the alkylphenol derivatives aqueous solution. It was shown that their photoactivity in the removal of alkylphenol ethoxylates from aqueous solution was higher than for porous titania nanoparticles. The incorporation of PEG template into the inorganic network with subsequent formation of nanoporous structure will increases the efficiency of the SiO 2-TiO 2 nanoparticles. It was shown that the polymeric species played a significant role in the generation of pores by the hybridization with inorganic oxides on the molecular scale due to hydrogen bonds taking place at the ether moieties. The advantages of including thermally removable PEG template in terms of increasing surface, mesoporosity and photon absorbance at UV-visible wavelengths to give nanoengineered photocatalytic materials is described.

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