METHOD OF PRODUCING ALKYLIMIDAZOLINE Russian patent published in 2022 - IPC C07D233/06 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of organic chemistry, in particular to the production of a higher alkyl (C₈-C₂₂) imidazoline of the following formula, where R is a saturated or unsaturated hydrocarbon radical C₈-C₂₂, by thermocatalytic reaction at temperature of 200 °C reaction of fatty acid or mixture of fatty acids, with alkylpolyamine H₂N(CH₂CH₂NH)_nCH₂CH₂NH₂, where n=2–8, taken in molar ratio of fatty acids to alkylpolyamine as 1:1-0.33, respectively, in the presence of crystalline nitrilotrimethylphosphonic acid of formula C₃H₁₂NO₉P₃ as a catalyst in amount of 0.5 wt.% to the starting material and distillation in vacuum at temperature of 100 °C water formed during synthesis.

EFFECT: simplified process of synthesis of alkylimidazoline of the specified formula, characterized by greater depth of cyclisation.

3 cl, 5 ex