Interactions of 6-coumarinyldiazonium chloride with styrene, acrylonitrile, metylmetacrylate were investigated. The products of chloroarylation with acrylonitrile – 2-chloro-3-(2-oxo-2H-6-chromenyl)propanenitrile, metylmetacrylate – methyl 2-chloro-2-methyl-3-(2-oxo-2H-6-chromenyl)propanoate and 6-(2-phenyl-1-ethenyl)-2H-2-chromenone with styrene in catalytic conditions by copper (II) salts were obtained.

New Schiff bases have been prepared by reacting 3-hydroxy-4-pyridinecarboxaldehyde with several amines. NMR spectroscopic methods provided clear evidence that the Schiff bases exist in the solid state and in solution as hydroxy/imino tautomers. The study of the stabilities of the tautomeric forms and the different conformers have been approached using density functional calculations (B3LYP/6-31G**).

The effects of Li2O and ZrO2-doping on the surface and catalytic properties of CuO/MgO system have been investigated. The dopant concentration was changed between 0.6 and 3.6 mol % Li2O and that of ZrO2 between 2.4-7.7mol %. Pure and variously doped solids were calcined at 673 and 773 K. The techniques employed for characterization of different solids were XRD, nitrogen adsorption at 77 K and catalytic conversion of iso-propanol at different reaction temperatures ranged between 423 and 573 K. The results revealed that the addition increasing amounts of dopant (Li2O and ZrO2) to CuO/MgO solid led to an increase in the degree of dispersion of CuO phase and a decrease in the specific surface areas of the investigated solids. Li2O and ZrO2–doping increases the catalytic conversion of iso-propanol, which proceeds mainly via dehydrogenation to give acetone and aldol condensation of the produced acetone to give methyl isobutyl ketone (MIBK). Doping with 1.2 mol % Li2O for the solids calcined at 673 K increases both of total conversion and selectivity to MIBK at reaction temperature 473 K with 24 % and 25 %, respectively. Doping with 7.7 mol % ZrO2 for the investigated solids calcined at 673 K increases both of total conversion and selectivity to MIBK at reaction temperature 473 K with 32 % and 99 %, respectively.

Five membered aromatic 2-nitroheterocycles are studied in Diels-Alder reactions. 2-nitrofuran and 1-tosil-2-nitropyrrole yielded normal cycloadducts with isoprene and Rawal´s diene. Formation of pyrrolyl-derivatives are observed in reactions of 2-nitrothiophene and 2-nitroselenophene with isoprene.