The article describes a two-step method for the synthesis of 1,1'-oxalyl dibenzotriazole (bis(1H-benzotriazol-1-yl)ethane-1,2-dione) from benzotriazole via 1-trimethylsilylbenzotriazole, followed by reaction with oxalyl chloride; the yield of the final product is 87%. The kinetics of hydrolysis, alcoholysis and aminolysis of 1,1'-oxalyldibenzotriazole was studied in the systems acetonitrile – water (9 : 1), acetonitrile – methanol (9 : 1), acetonitrile – diethylamine (9 : 1) at 25 °C, and also by the equation Arrhenius values of the activation energy in the reactions of hydrolysis, alcoholysis, and aminolysis of 1,1'-oxalyl dibenzotriazole were calculated. To study the thermodynamic features of the reactions of obtaining this compound in the Spartan’14 1.1.4 program, a number of thermodynamic characteristics were calculated, determining the spontaneous and exothermic nature of the process. For the 1,1'-oxalyl dibenzotriazole molecule, possible conformers were found in the Molecular Operating Environment 2014.0901 software, for which the surfaces of nucleophilic susceptibility were calculated in the SCIGRESS Modeling 3.1.4 software. The structure of 1,1'-oxalyl dibenzotriazole was confirmed by IR and 1H NMR spectroscopy. The program PASS Professional 2007 predicted the most likely types of biological activity of the studied compounds. The most significant types of biological activity are in relation to renal diseases, anti-neurotoxic, anti-acid, anti-inflammatory. The obtained data allow us to choose the optimal conditions for the synthesis of 1,1’-oxalyl dibenzotriazole and to conclude that it is low stability in nucleophilic-containing media.