ALKYLATED 1,3-BENZENEDIAMINE COMPOUNDS AND METHODS FOR PRODUCTION THEREOF Russian patent published in 2013 - IPC C07C209/24 C07C211/50 C07D211/58 C10M133/12 C09K15/18 C09K15/30 C10M133/40 C10M177/00 C10N30/10 C10N70/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing alkylated 1,3-benzenediamine compounds of structural formula II. The alkylated 1,3-benzenediamine compound is used as a deposit growth inhibiting additive for lubricating oil for organic materials containing lubricating oil, gasoline and diesel fuel. The method of alkylating a 1,3-benzenediamine compound involves reacting a first carbonyl compound with a 1,3-benzediamine compound to form an intermediate compound, where the first carbonyl compound is substituted on the corresponding nitrogen atoms of 1,3-benzenediamine, and reacting a second carbonyl compound with said intermediate compound in the presence of hydrogen and a hydrogenation catalyst to form alkylated 1,3-benzenediamine, where the second carbonyl compound is substituted on the central aromatic ring of the alkylated 1,3-benzenediamine. The alkylated 1,3-benzenediamine has the structure (II) of general formula: (I), in which R₁ and R₂ are independently selected from a group consisting of hydrogen, C₁-C₂₀ alkyl, 2-methylpropenyl, benzyl, cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl; R₃ and R₄ are independently selected from a group consisting of C₁-C₂₀ alkyl, 2-methylpropenyl, benzyl, cyclopentyl, cyclohexyl, cycloheptyl and cycloocty; and R₅ and R₆ are independently selected from a group consisting of n-propyl, 1-methylethyl, n-butyl, isobutyl, sec-butyl, 1,3-dimethylbutyl, 1,4-dimethylpentyl, n-pentyl, isopentyl, 1,5-dimethylhexyl, hexyl, 2-methylpropenyl, benzyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl and hydrogen, under the condition that at least one of R₅ and R₆ is not hydrogen.

EFFECT: method increases selectivity of alkylation on amino groups and the benzene ring; obtained compounds improve oxidation resistance of lubricant substances and fuel.

5 cl, 5 tbl, 21 ex