FIELD: organic chemistry. SUBSTANCE: product: compounds of the formula (I) $$$ where: x = 1, 2 or 3 and if x = 1 then $$$ means $$$-alkyl, substituted $$$-alkyl with substituents from the order: halogen, $$$, -CN, $$$ or $$$, $$$-alkyl broken with groups: $$$, -O- or -S-; $$$-alkenyl; $$$-cycloalkyl; phenyl-$$$-alkyl; free phenyl; substituted phenyl with substituents from the order: halogen, phenyl-$$$-alkyl and/or $$$-alkoxy; naphthyl; group of the formula: $$$, $$$ or $$$ where: $$$ mean independently hydrogen, $$$-alkyl, $$$-cycloalkyl or phenyl-$$$-alkyl; $$$ - hydrogen, metyl, allyl or benzyl; $$$ - hydrogen or $$$; $$$ - hydrogen or methyl; $$$ - hydrogen or $$$-alkyl; $$$ and $$$ mean independently hydrogen or $$$-alkyl; and n = 3-6 at condition that $$$ does not phenyl group that is unsubstituted by both ortho-positions to C-atom that is bound with O-atom; if x = 2 then $$$ means $$$-alkylene, $$$-alkylene broken with groups $$$, -O- or -S- or group of the formula $$$ if x = 3; $$$ means $$$-alkanetriyl or group $$$ where m = 1-4. Synthesized compounds can be used as stabilizing agent for organic material exhibiting sensitivity to thermic, oxidative and/or light-induced decomposition (destruction). EFFECT: improved method of synthesis. 6 tbl
