The catalytic tests were carried out according to a previously published procedure with a 1.5-3 mmol of ethyl 4-oxocyclohexanecarboxylate (1 eq) and propargylamine (2 eq) in isopropyl alcohol at reflux(Scheme 1). After 3.5 h of the reaction the catalyst was separated, the reaction mixture was passed through SiO2 pad and washed off with chloroform and ethylacetate. The solvents were removed under vacuum and known quantity of 1,3,5-trimethoxybenzene (standard) was added to the residue and dissolved in CDCl3. The reaction mixtures were analized by 1 H NMR spectroscopy, the quantities of the compounds were determined by integration of the signals relative to the signals of standard. The yield of the 3 was calculated as ratio of the quantity 3 in the residue after the catalytic test to the initial quantity of the 4-oxocyclohexanecarboxylate (1). The weight of the catalysts was not adjusted to a certain content of Cu or C, because we supposed that both Cu and C could have catalytic activity. To calculate the amount of copper in a sample weight, the copper content determined by the AAS was used.