Patent ID: 7361788
Filing Date: 2008-04-22
Classification: C07C

Abstract:
1. A single-step process for the ring alkylation of at least one N-alkyl-N′-phenyl-phenylenediamine with at least one olefin selected from the group consisting of hydrocarbon acyclic monoolefins comprising from 2 to about 50 carbon atoms, cyclic olefins comprising from 5 to 10 carbon atoms, and aryl-substituted monoolefins comprising from 8 to 20 carbon atoms; wherein said process comprises the single step of heating a mixture of the N-alkyl-N′-phenyl-phenylenediamine(s) and olefin(s) in the presence of a catalytic amount of at least one alkyl aluminum halide at a temperature of from about 50 to about 350° C. in a sealed vessel for from about one to about 30 hours.