How is Ethyl [2-(4-phenoxyphenoxy)ethyl]carbamate (CAS: 72490-01-8) typically synthesized?

Ethyl [2-(4-phenoxyphenoxy)ethyl]carbamate (CAS: 72490-01-8) is typically synthesized through a multi-step process involving the formation of a phenoxy intermediate, followed by its coupling with ethyl isocyanate. The synthesis employs mild conditions, using catalytic amounts of a Lewis acid as a catalyst. The overall yield is good, with high regioselectivity and good purity of the final product.