The present work investigates the effect of powdered lignocellulose from alfalfa straw obtained by a chemo-extrusion method, as well as its carboxymethylated derivative, on the physicomechanical properties and swelling behavior of vulcanizates based on nitrile butadiene rubber (NBR, BNKS-28 AMN grade). Carboxymethylation of lignocellulose was performed using microwave activation. The functional group composition of the modified lignocellulose was characterized by Fourier-transform infrared (FTIR) spectroscopy, which confirmed successful carboxymethylation and revealed a reduction in crystallinity. Thermogravimetric analysis (TGA) was used to determine the thermal stability of the swelling carboxymethylated fillers. The degree of crystallinity of the carboxymethylated swelling fillers was evaluated by X-ray diffraction (XRD). It was shown that the introduction of powdered lignocellulose and its carboxymethylated derivative into the rubber compounds lead to an increase in compound viscosity and prolong the optimum cure time, while having no effect on the scorch time, in a manner similar to that observed for the commercial product sodium carboxymethylcellulose (NaCMC). It has been shown that the introduction of powdered lignocellulose and its carboxymethylated derivative increases the tensile strength of the rubber and improves its resistance to the action of mineralized water compared with the samples containing NaCMC. It was also demonstrated that carboxymethylated lignocellulose exhibits enhanced sorption capacity comparable to that of NaCMC. Overall, carboxymethylation of lignocellulose derived from alfalfa straw significantly improves the stability and sorption characteristics of nitrile butadiene rubber composites. These findings indicate that carboxymethylated lignocellulose is a sustainable and effective alternative to industrial NaCMC for use as a functional filler in elastomeric materials.

New α-aminophosphonates were synthesized and characterized by the interaction of cyclohexylamine and 1-ethynyl-1-amino-cyclohexane with various benzaldehydes and diethyl phosphite under the conditions of the Kabachnik-Filds reaction. The composition and structure of the synthesized compounds were confirmed by IR, NMR 1 H and 31P spectroscopy

A new series of diphosphorylated amidophosphates was obtained as a result of the reaction of meta-phenylenediamine with dialkyl phosphites in the presence of CCl₄ and triethylamine (Atherton–Todd reaction) under microwave irradiation. Structure of all the obtained amidophosphates was established on the basis of ³¹P, ¹H, ¹³C NMR, IR spectroscopy and mass spectrometry methods, as well as single crystal X-ray diffraction and elemental analysis data.

This paper examines the effect of N-(1-ethynylcyclohexyl)amide O,O-diethylphosphoric acid (BA-4) on seed germination, growth and yield of the agricultural crops (carrot, beetroot, potato). As a result, seed germination in the concentrations of 0.001 and 0.0001% of BA-4 has increased by 7.0 and 19.0%, compared to the control. The results of the laboratory studies have shown that the treatment of with the BA-4 (0.0001% solution) has increased the seed germination energy by 11.0 and 17.0%, respectively. The HAU standard (0.06%) has increased the germination energy by 9.0% and germination by 10.0%. The results of the laboratory studies have shown that the use of BA-4 for treating the tubers has increased the number of awakened buds by 43.0% (0.001%) and 60.0% (0.0001%), compared to the control. When using BA-4 in the concentration of 0.001%, the carrot yield has increased by 3.5 t/ha or 15.9%, and in the concentration of 0.0001% - by 5.0 t/ha or 22.7%. When beetroot seeds were treated with the BA-4 preparation at a 0.0001% concentration, the yield increase compared to the control was 6.3 t/ha or 24.2%. The potato yield has increased from the use of BA-4 in concentration of 0.001% by 4.3 t/ha or 18.9%, compared to the control; in the concentration of 0.0001% - by 7.3 t/ha or 32.2%. The achieved results of increasing the yield of BA-4 are an effective stimulation of plant growth and development, contribute to an increase in the yield and ensure the compliance with the agricultural crop indicators.

This study investigates the effect of O,O-diethyl-1-(3,4-dimethoxyphenyl)-(1-ethynylcyclohexylaminomethyl)phosphonate (BA-3) on seed germination, plant growth, and yield of agricultural crops, including carrot, beetroot, and potato. The results indicate that seed germination increased by 14.0% and 27.0% at BA-3 concentrations of 0.002% and 0.0002%, respectively, compared to the control. Laboratory experiments demonstrated that treatment with BA-3 (0.0002% solution) enhanced germination energy by 16.0% and 22.0%, respectively. The reference standard HAU (0.06%) improved germination energy by 13.0% and overall germination by 12.0%. In addition, treatment of potato tubers with BA-3 resulted in a significant increase in the number of awakened buds, by 43.0% at 0.002% and 53.0% at 0.0002%, relative to the control. Field trials showed that the application of BA-3 at a concentration of 0.002% increased carrot yield by 4.0 t/ha (18.2%), while at 0.0002% the increase reached 4.8 t/ha (21.8%). For beetroot, treatment with BA-3 at 0.0002% led to a yield increase of 5.8 t/ha (22.3%) compared to the control. Similarly, potato yield increased by 3.6 t/ha (15.9%) at 0.002% and by 6.8 t/ha (30.0%) at 0.0002%. Overall, the obtained results demonstrate that BA-3 effectively stimulates plant growth and development, leading to improved productivity and enhanced agronomic performance of the studied crops.

Несмотря на впечатляющие успехи, достигнутые в области синтеза и изучения свойств амидофосфатов, соединения данного класса постоянно привлекают внимание исследователей разнообразием путей химических превращений и перспективой использования их в различных областях науки и техники. Этот класс фосфорорганических соединений проявляют различную биологическую и другие виды активности, что стимулирует разработку новых способов синтеза их полифункциональных производных. Возможности химических модификаций амидофосфатов, с введением фармакофорных, конфигурационно индивидуальных групп к их -центру, имеют широкие перспективы в плане получения на их основе биологически активных соединений для нужд медицины, сельского хозяйства и техники. Кроме того, амидофосфаты представляют интерес и для изучения теоретических вопросов органической химии, связанных с некоторыми особенностями химических и биологических свойств, которые определяются влиянием азотного и фосфорного фрагментов. Таким образом, развитие исследований в области разработки методов синтеза новых функционально замещенных производных амидофосфатов, установление их строения, а также поиск в их ряду перспективных биологически активных соединений являются современными и актуальными. В результате реакции 3-метоксифениламина и 2-метоксифенилэтил-амина с диалкилфосфитами в присутствии ССl4 и триэтиламина, реализуемой в классических условиях реакция Атертона-Тодда, были получены и охарактеризованы новые амидофосфаты. Структура амидофосфатов установлена на основании данных ИК, ЯМР 31Р, 1Н, 13С - спектроскопии и элементного анализа.