How is 4,4'-Iminodi(1-butanol) (CAS: 79448-06-9) typically synthesized?

4,4'-Iminodi(1-butanol) (CAS: 79448-06-9) can be synthesized through the condensation reaction of 1-butanol with formaldehyde in the presence of an acid catalyst like sulfuric acid. The process involves the formation of an imine intermediate, followed by dehydration to yield the final product. The yield is typically around 80-85%, and the reaction is selective with good atom economy.