How is 2,2'-(Octadecylimino)diethanol (CAS: 10213-78-2) typically synthesized?

2,2'-(Octadecylimino)diethanol is typically synthesized through the reaction of octadecylamine and ethanol in the presence of a catalyst, such as sulfuric acid. The process involves the formation of an imine intermediate, followed by reductive amination to form the final product. The yield is generally high, and the method can be optimized for selectivity and purity.