New (co)polyimides possessing good thermal and physicomechanical characteristics, high hydrolytic stability, and transparency at the best world level were synthesized. It was shown that, depending on the natures of diamine and dianhydride used in the synthesis, the optical properties of polymers also change. These properties of (co)polyimide films correlate with the ΔE value, which is defined as the difference between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) energies of the polyimide repeating unit. It was shown that the use of 1,2-dichlorobenzene makes it possible to obtain high-molecular-weight (co)polyimides with a set of enhanced performance characteristics.

For the first time, the influence of the structure of vicinally substituted bicyclo [2.2.1] heptanes on the yield of hydrogenation products under the Schwenk-Papa reaction conditions was studied. It has been shown that the Schwenk-Papa reaction allows one-step reduction of multiple bonds of the bicyclic fragment, double bonds of side alkyl substituents, as well as nitro- cyano- and oxime groups with their joint presence. At the same time, carboxyl and amide groups are not reduced under these conditions.

Alkylation of N -aryl and N -arylalkyl acetamides with hydroxy adamantane derivatives in trifluoroacetic acid was studied. The differentiating effect of trifluoroacetic acid on the regio-selectivity of adamantylation of o -alkyl-substituted acetanilides was established, leading to energetically more stable products of para -substitution with respect to the alkyl group (the content of para-alkyl isomers is 93–94%). This enabled the synthesis of adamantylaminoarenes in 83–99% yields and with 95–99% purity.

The Willgerodt–Kindler reaction of 1-(1-adamantyl)propan-2-one and its derivatives was studied by gas chromatography–mass spectrometry. The reaction time was found to be 3–4 times longer than in the case of alkyl aryl ketones due to considerable steric hindrances in the molecules of adamantyl ketones. The use of diglyme as solvent and sodium butyl xanthate as catalyst significantly shortened the reaction time and improved the yield to 92%.

The regularities of reduction of adamantane-containing unsaturated nitriles with Raney nickel were studied. It was shown that in the reaction conditions simultaneous reduction of both the double bond and the nitrile group occurs. The reduction of 2-(5-hydroxyadamant-2-ylidene)alkyl nitriles requires a longer time.

The process of producing 4(1-adamantyl) aniline was investigated which allowed to get 4(1-adamantyl) aniline with high yield and purity with a significant decrease in the share of by-products were found.

Method of the alkylation o-phenylenediamine by bromadamantane has been developed. It was determinated the optimal synthesis conditions that were allowed to produce the desired compound in high yield and purity.

The process of producing adamantilnitrometilene was investigated and the reaction conditions, which allowed to get adamantilnitrometilene with high yield and purity with a significant decrease in the share of by-products were found

It was developed a novel technological method for preparing N-(2-heterocycloalkyl-1-ylethyl)-2-adamantane amines in good yield, selectivity and high purity. Such method allows to use available reagents for the synthesis.

Ionization constants of {(2-amino)-bicyclo[2.2.1]-hept-3-yl}anilines and {(2-aminomethyl)bicyclo [2.2.1]-hept-3-yl}anilines in nitromethane have been determined by potentiometric titration. Due to high values of pK a 1 BH+ and pK a 2 BH+ (close to known adamantane-containing diamines) the studied compounds are promising candidates for preparation of (co)polyimides with a complex of excellent utilitarian properties.

Some special aspects of chromatography-mass spectrometry fragmentation of adamantane hydroxy acids were studied. The optimal conditions for chromatographic separation and detection for identification of both individual compounds, and mixtures thereof, without prior sample preparation were found.

(1-adamantylmethyl) (2-piperidin-1-ylethyl) amine was synthesized using the reaction of alkylation hydrochloride aminometiladamntane by 1 (2-chloroethyl) piperidine in high yield and purity. The influence of the molar ratio of reagents, temperature and duration of the synthesis to the selectivity and yield of the reaction was investigated.

On the basis of [(2-amino)- and (2-aminomethyl)bicyclo[2.2.2]hept-3-yl]anilines, new soluble polyimides and copolyimides are synthesized. They are characterized by high thermal stability and increased hydrolytic stability that significantly surpass those of aromatic polyimides.

Novel asymmetric bicyclic diamines as perspective monomers for the synthesis of polyimides with a complex of the improved performance properties were obtained. The structures of the title compounds were confirmed by NMR-spectroscopy and mass spectrometry.