DIRECT ALKYLATION OF N-ALKYL-N'-PHENYL-p-PHENYLENE DIAMINE Russian patent published in 2011 - IPC C07C209/68 C07C211/55 

FIELD: chemistry.

SUBSTANCE: invention relates to a single-step alkylation into a ring of at least one N-alkyl-N'-phenyl-phenylene diamine with at least one olefin selected from a group comprising hydrocarbon acyclic mono-olefins containing 2 to approximately 50 carbon atoms, cyclic olefins containing 5 to 10 carbon atoms, and aryl-substituted mono-olefins containing 8 to 20 carbon atoms. The method involves one step for heating the mixture of N-alkyl-N'-phenyl-phenylene diamine(s) and olefin(s) in the presence of a catalytic amount of at least one halide of alkylaluminium at temperature from approximately 50 to approximately 350°C in an air-tight vessel for approximately 1 hour to approximately 30 hours.

EFFECT: method simplifies the process by carrying out the process in a single step while maintaining high output of end products.

13 cl, 5 tbl, 22 ex