How is N,N-Dioctadecylaniline (CAS: 72072-19-6) typically synthesized?

N,N-Dioctadecylaniline (CAS: 72072-19-6) is prepared through the alkylation of aniline with 1-dodecene. The reaction is usually conducted under basic conditions using potassium tert-butoxide as a catalyst. The process yields a high purity product with good selectivity and yield. The reaction is typically performed at room temperature, and the product can be isolated by filtration and recrystallization.