How is N-Benzyl-N-(2-chloroethyl)-1-phenoxy-2-propanamine hydrochloride (CAS: 63-92-3) typically synthesized?

N-Benzyl-N-(2-chloroethyl)-1-phenoxy-2-propanamine hydrochloride is typically synthesized through a multi-step process involving the reaction of phenoxyacetic acid, benzylamine, and 2-chloroethanol. The process involves esterification, amidation, and substitution reactions. The reaction is catalyzed by an acid or base, and the final step involves the protonation of the amine to form the hydrochloride salt. The yield is typically around 75-85%, with high selectivity towards the target product.