By triple condensation of 2-allylphenol with formaldehyde and methylamine (at a ratio of 1:1:1 and 1:2:1 mol, at 800C for 3 hours) a number of compounds (I-III) of various structures was prepared. It has been established that, depending on the ratio of the taken reagents, compounds of various structures are formed. By the reaction of compound I - 8-allyl-substituted 1,3-benzoxazine with HBr quaternary ammonium salt (IV) was obtained. Antimicrobial activity of 8-allyl-substituted 1,3-benzoxazine (I) and ammonium salt (IV) against microorganisms: Staphylococcus aureus NCTC 6571, Staphylococcus aureus ATCC®25923, Escherichia coli ATCC®25922, Candida albicans NSTC-3255/ATCC2091, Shigella flexneri ATCC®12022, Salmonella enterica ATCC®13076, and Aspergillus niger (aquatic isolate) was studied. It was found that compounds I and IV at a concentration of 30 mg/L in comparison with the references (amoxicillin and fluconazole) have the highest bactericidal and fungicidal properties. By thermal treatment of compound I cross-linked copolymer V was synthesized. While studying the thermal properties of copolymer V their sufficient thermal stability (up to ~4500C) was established. Copolymer V also has a sorption property for the extraction of uranyl ions from aqueous systems (the degree of extraction at pH 7 is ~70%, the sorption capacity – 178 mg/g). The structures of the obtained compounds were confirmed by IR and NMR spectroscopy

. The article presents the results of studies on the evaluation of the adsorption properties of three aromatic compounds containing simultaneously several active centers in the structures - fragments with double and triple bonds and an aminomethyl group: 1-propenyl-2-propargyloxy-3-diethylaminomethylbenzene (I), 1-allyl- 2-propargyloxy-3-diethylaminomethylbenzene (II) and 1-allyl-2-propargyloxy-3-morphoaminomethylbenzene (III). Based on the data of gravimetric studies, the adsorption-desorption constants (Kads), as well as the adsorption energy (Gads) were calculated, confirming the mechanism for protecting the steel surface from acid corrosion by forming chemisorbed adsorption layers on it.

Alkaline synthesis of double co-oligomers of 2-propenylphenol and formaldehyde (synthons) was carried out at 92-950C, for 3 hours and ratio of 1:2.5 mol (their yield are 93% of theory)Interaction of maleic anhydride with the obtained olygomers at 800C in the presence of 0.5% benzoyl peroxide for 10 hours produced copolymers of a three-dimensional cross-linked structure (with a yield of 90%). By treating them with hot water, a sorbent was obtained to contain both propenyl and carboxylate fragments in the structure - active centers of chemisorption. The functional sorption properties of the copolymer were studied under static conditions, in model water systems. The influence of the pH of the medium, the concentration of uranyl ions and the exposure time on the degree of their sorption at room temperature were studied and it was found that the best results are achieved at pH 6 and for 24 hours (R=93%). Uranyl ions can be easily desorbed with mineral acid and the crosslinked copolymers can be reused.