Published September 2025, Pg. 41-48

Section: Oil refining and petroleum chemistry

UOT: 547.541.566.223

DOI: 10.37474/0365-8554/ 2025-09-41-48

Synthesis of amino alcohols based on the condensation products of methylcyclopentene with formaldehyde and hydrohalic acids and the properties of the reaction products

O.A. Sadigov Dr. in Ch. Sc. - Institute of Petrochemical processes

N.A. Pashabayli - Institute of Petrochemical processes

H.M. Əlimərdanov - Institute of Petrochemical processes

Three-component condensation of methylcyclopentene isomers with formaldehyde and hydrohalic acids was carried out to obtain 2-chloro(bromo)-2(5)-methylcyclopentyl) methanols with a yield of 52–58 %. By further substitution of the halogen atom of the condensation products with amines, the corresponding [2-(N-alkyl)-2(5)-methylcyclopentyl] methanols were synthesized with a good yield of 73–81.7 %, the hydroxyl group of which is located in the methylene fragment of the side chain. The structure of the synthesized products was proven using elemental analysis, IR and 1H and 13C NMR spectroscopy. The test was carried out in M-11 oil (GOST 9-052-75). Fungal (Aspergillus niger, Candida tropicalis) and bacterial (Pseudomonas aeruginosa) cultures were used as test cultures. The antimicrobial properties of the compounds were compared with the preparations used in practice, the standard, carbolic acid (phenol), chloramines, rivanol and nitrofungin. The antimicrobial activity of the substances was studied by the serial dilution method. Gram-negative (Escherichia coli and Pseudomonas aeruginosa), gram-positive (Staphylococcus aureus), spore-forming (anthracoid) bacteria and yeast-like fungi (Candida genus) were used as test cultures.The obtained amino alcohols were tested as antimicrobial additives to lubricating oils. It was found that they effectively suppress the vital activity of microorganisms.

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